HVAC Code Lookup

Goodman and Amana fault codes

40 documented codes for Goodman and Amana furnaces and air conditioners, each cited to the manufacturer's own manual. Find your code in the table, then jump to what it means, the likely causes, what you can safely check, and when to call a technician.

Goodman and Amana are both Daikin Comfort Technologies brands built in Waller, TX on the same platforms and the same integrated control boards. One installation manual covers both, using a wildcard model number (for example *MVC96 = GMVC96 and AMVC96), so a code means the same thing on either brand. Daikin-branded furnaces of the same generation use these controls too. That is why Amana codes are on this page: they mean the same thing on either brand.

Furnace codes

CodeMeaningSeverity
11 flash, then a pause, repeatingIgnition lockoutSoft lockout
22 flashes, then a pause, repeatingPressure switch stuck closedSoft lockout
33 flashes, then a pause, repeatingPressure switch openSoft lockout
44 flashes, then a pause, repeatingOpen limit switchWarning
55 flashes, then a pause, repeatingFlame sensed when there should be noneSafety fault
66 flashes, then a pause, repeatingOpen rollout limitSafety fault
77 flashes, then a pause, repeatingLow flame sense signalWarning
88 flashes, then a pause, repeatingIgniter relay faultHard lockout
99 flashes, then a pause, repeatingTwinning faultSoft lockout
1010 flashes, then a pause, repeatingOpen fuseHard lockout
1111 flashes, then a pause, repeatingIgniter openHard lockout
1212 flashes, then a pause, repeatingInducer relay error or improper groundingHard lockout
continuous rapid flashcontinuous rapid flashReversed polaritySoft lockout
continuous oncontinuous onNormal operationStatus
offoffNo light at all on the control boardHard lockout
EE0Ignition lockoutSoft lockout
EE1Low-stage pressure switch was already closed when the heat cycle started, so the control will not light the burnersSoft lockout
EE2Low-stage pressure switch never closedSoft lockout
EE3High limitWarning
EE4Flame was detected when there was no call for heatSafety fault
EE5The fuse on the control board has blown, so there is no 24 volt control power and the furnace will not runHard lockout
EE6Flame sense signal is weakWarning
EE7Problem with the igniter circuitHard lockout
EE8High-stage pressure switch was already closed when the heat cycle startedWarning
EE9High-stage pressure switch never closed, so the furnace will not go to high fireWarning
E10Grounding faultSoft lockout
E11Rollout switch is openSafety fault
EEALine polarity is reversedSoft lockout
EEbThe control board is not energizing the gas valve when it should beHard lockout
EECThe gas valve is energized when it should be offSafety fault
EEdAuxiliary limit switch in the blower compartment is openWarning
EEEThe furnace control board detected an internal fault in itself and stoppedHard lockout
EEHTwinning errorSoft lockout
EEJInducer motor relay errorHard lockout
EELIgniter relay faultHard lockout
EEnIgniter openHard lockout
EbLThe circulator blower motor is drawing far less current than expected after the heat-on delay, so the control locks the furnace outHard lockout
nonEThe display shows 'nonE' or nothing at all - the control has no power, or the board is deadHard lockout
EALOn an R-32 refrigerant system, the leak sensor detected refrigerant and put the furnace into mitigation mode - the blower runs to disperse it and normal heating is suspendedSafety fault

Goodman furnace code 1: Ignition lockout

Soft lockoutShown as: 1 flash, then a pause, repeating

Ignition lockout. The furnace tried to light three times, could not prove a flame, and shut itself down. The control will try again on its own about an hour later.

Manual wording: “Furnace lockout due to an excessive number of ignition "retries" (3 total)”

Documented for: Goodman GMS8, GMH8, GDS8, GDH8, GHS8, GME8, GMES80, GCES80, GMSS92, GMSS96, GCSS96 (single red diagnostic LED)

Likely causes, most common first

  1. Failure to establish flame - no gas to the burners
  2. Bad igniter or igniter alignment
  3. Improper orifices
  4. Coated, oxidized or improperly connected flame sensor
  5. Loss of flame after establishment from interrupted gas supply
  6. Lazy burner flames from improper gas pressure or a restriction in the flue
  7. Improper induced draft blower performance

What you can safely check yourself

  • Make sure the gas is on - check that another gas appliance in the house (range, water heater) still works
  • Check that the furnace door panel is fully seated so the door switch closes
  • Set the thermostat to Heat and a few degrees above room temperature
  • Turn the furnace off at its power switch for about 30 seconds, then back on, to let it try one more time

When to call a technician

If the furnace locks out again after one reset, stop. Igniter, flame sensor, gas pressure and induced draft blower diagnosis are all technician work on a live gas appliance.

Sources

Goodman furnace code 2: Pressure switch stuck closed

Soft lockoutShown as: 2 flashes, then a pause, repeating

Pressure switch stuck closed. The control saw the vent pressure switch already closed before the draft inducer started, so it will not light the burners.

Manual wording: “Pressure Switch stuck Closed”

Documented for: Goodman GMS8, GMH8, GDS8, GDH8, GHS8, GME8, GMES80, GCES80, GMSS92, GMSS96, GCSS96 (single red diagnostic LED)

Likely causes, most common first

  1. Induced draft blower pressure switch contacts sticking
  2. Shorts in the pressure switch circuit
  3. Induced draft blower is not operating

What you can safely check yourself

  • Turn the furnace off at its power switch for about 30 seconds and back on once to see if the code clears

When to call a technician

A stuck pressure switch is a safety-proving device. It must be tested and replaced by a technician - never jumpered or bypassed.

Sources

Goodman furnace code 3: Pressure switch open

Soft lockoutShown as: 3 flashes, then a pause, repeating

Pressure switch open. The draft inducer is running but the vent pressure switch never closed, so the furnace will not light. Usually a venting or drain blockage.

Manual wording: “Pressure Switch stuck Open”

Documented for: Goodman GMS8, GMH8, GDS8, GDH8, GHS8, GME8, GMES80, GCES80, GMSS92, GMSS96, GCSS96 (single red diagnostic LED)

Likely causes, most common first

  1. Pressure switch hose blocked, pinched or connected improperly
  2. Blocked flue or weak induced draft blower
  3. Blocked inlet air pipe or blocked drain system (condensing models)
  4. Incorrect pressure switch setpoint or malfunctioning switch contacts
  5. Loose or improperly connected wiring

What you can safely check yourself

  • Go outside and check the intake and exhaust pipes for snow, ice, leaves, a bird nest or other blockage
  • On a high-efficiency furnace, check the condensate drain line and trap for a clog or standing water
  • Check that the vent terminal is not buried by drifting snow

When to call a technician

If the pipes and drain are clear, the pressure switch, hose and induced draft blower need a technician. Do not jumper or bypass the pressure switch.

Sources

Goodman furnace code 4: Open limit switch

WarningShown as: 4 flashes, then a pause, repeating

Open limit switch. The furnace overheated and the high limit (or auxiliary limit) tripped. The blower keeps running to cool the heat exchanger. This is almost always an airflow problem.

Manual wording: “Open Main or Auxillary Temperature Limit Switch”

Documented for: Goodman GMS8, GMH8, GDS8, GDH8, GHS8, GME8, GMES80, GCES80, GMSS92, GMSS96, GCSS96 (single red diagnostic LED)

Likely causes, most common first

  1. Insufficient conditioned air over the heat exchanger
  2. Blocked filters
  3. Restrictive ductwork
  4. Improper circulator blower speed or a failed circulator blower
  5. Faulty primary or auxiliary limit switch
  6. Loose or improperly connected wiring

What you can safely check yourself

  • Check the air filter and replace it if it is dirty - this is the number one cause of a 4-flash code
  • Open all supply registers and make sure furniture, rugs or boxes are not blocking them
  • Make sure the return air grille is not blocked or covered
  • Check that any humidifier bypass damper is set correctly for the season

When to call a technician

If the code returns after a clean filter and open registers, the limit is tripping for a reason a technician must find - a failing blower, a restricted duct system, or a cracked heat exchanger. Never jumper or bypass a limit switch.

Sources

Goodman furnace code 5: Flame sensed when there should be none

Safety faultShown as: 5 flashes, then a pause, repeating

Flame sensed when there should be none. The control detected flame for more than about 4 seconds with the gas valve de-energized. The furnace shuts down and both blowers keep running.

Manual wording: “Flame Sensed>4.25 Seconds with Gas Valve De-Energized”

Documented for: Goodman GMS8, GMH8, GDS8, GDH8, GHS8, GME8, GMES80, GCES80, GMSS92, GMSS96, GCSS96 (single red diagnostic LED)

Likely causes, most common first

  1. Short to ground in the flame sense circuit
  2. Lingering burner flame
  3. Slow closing gas valve

What you can safely check yourself

  • Turn the furnace off at its power switch and leave it off until a technician arrives

When to call a technician

A gas valve that may be leaking through, or a flame that will not go out, is an immediate technician call. Shut the furnace off and do not attempt any test yourself.

Sources

Goodman furnace code 6: Open rollout limit

Safety faultShown as: 6 flashes, then a pause, repeating

Open rollout limit (or blown control board fuse). A manual-reset rollout switch on the burner assembly tripped because flame rolled out of the heat exchanger instead of being drawn in.

Manual wording: “Open Rollout Temperature Limit Switch”

Documented for: Goodman GMS8, GMH8, GDS8, GDH8, GHS8, GME8, GMES80, GCES80, GMSS92, GMSS96, GCSS96 (single red diagnostic LED)

Likely causes, most common first

  1. Flame rollout
  2. Misaligned burners
  3. Blocked flue and/or air inlet pipe
  4. Failed induced draft blower
  5. Short in 24 volt AC control circuits or safety circuits
  6. Faulty rollout limit
  7. Blown integrated control module fuse

What you can safely check yourself

  • Turn the furnace off at its power switch and leave it off
  • If you smell gas, leave the house and call the gas utility from outside

When to call a technician

Flame rollout means combustion gases are coming out of the burner box. This is a technician-only repair (rollout limits are manual reset for exactly that reason) and often points at a blocked flue or a cracked heat exchanger. Never reset a rollout switch yourself.

Sources

Goodman furnace code 7: Low flame sense signal

WarningShown as: 7 flashes, then a pause, repeating

Low flame sense signal. The furnace is still running normally, but the flame sensor current has dropped low enough that the control is warning you it is about to start failing to light.

Manual wording: “Low Flame Sense Signal”

Documented for: Goodman GMS8, GMH8, GDS8, GDH8, GHS8, GME8, GMES80, GCES80, GMSS92, GMSS96, GCSS96 (single red diagnostic LED)

Likely causes, most common first

  1. Flame sensor is coated or oxidized
  2. Flame sensor incorrectly positioned in the burner flame
  3. Lazy burner flame due to improper gas pressure or combustion air

What you can safely check yourself

  • No homeowner action - the furnace is still heating. Schedule service before the code turns into a 1-flash ignition lockout

When to call a technician

Cleaning and repositioning a flame sensor means working inside the burner compartment of a live gas appliance. Book a service call.

Sources

Goodman furnace code 8: Igniter relay fault

Hard lockoutShown as: 8 flashes, then a pause, repeating

Igniter relay fault. The control board detected a problem with the relay that powers the hot surface igniter, so the furnace will not run.

Manual wording: “Igniter Relay Fault”

Documented for: Goodman GMES80, GCES80, GMSS92, GMSS96, GCSS96

Likely causes, most common first

  1. Improperly connected igniter
  2. Bad igniter
  3. Poor unit ground
  4. Poor burner ground
  5. Faulty integrated control module

What you can safely check yourself

  • Turn the furnace off at its power switch for about 30 seconds and back on once to see if the code clears

When to call a technician

Igniter, ground wiring and control board diagnosis are technician work.

Sources

Goodman furnace code 9: Twinning fault

Soft lockoutShown as: 9 flashes, then a pause, repeating

Twinning fault. Two furnaces are wired to run together and the control cannot see its partner, so the circulating blowers will not run in step.

Manual wording: “Twinning Fault”

Documented for: Goodman GMES80, GCES80 (PCBBF145 control board)

Likely causes, most common first

  1. Furnace twin terminals not connected together by field wiring
  2. Isolating relay not used or improperly installed

When to call a technician

Twinning is a field wiring configuration between two furnaces. It needs the installing contractor.

Source

Goodman furnace code 10: Open fuse

Hard lockoutShown as: 10 flashes, then a pause, repeating

Open fuse. The 3 amp fuse on the control board has blown, so there is no 24 volt power to the control and the furnace will not run.

Manual wording: “Open Fuse / No 24V power to integrated control module”

Documented for: Goodman GMES80, GCES80 (PCBBF145 control board)

Likely causes, most common first

  1. High voltage surge blows off the fuse
  2. Short in the 24 volt low-voltage wiring

What you can safely check yourself

  • Check that the furnace breaker in the electrical panel has not tripped, and reset it once if it has

When to call a technician

Replacing the control board fuse without finding the short that blew it just blows the next fuse. Have a technician find the fault.

Source

Goodman furnace code 11: Igniter open

Hard lockoutShown as: 11 flashes, then a pause, repeating

Igniter open. The control cannot see a complete circuit through the hot surface igniter - usually a cracked igniter or a disconnected igniter plug.

Manual wording: “Igniter Open”

Documented for: Goodman GMES80, GCES80 (PCBBF145 control board)

Likely causes, most common first

  1. Improperly connected igniter
  2. Bad igniter
  3. Poor unit ground
  4. Poor burner ground

When to call a technician

Hot surface igniters are fragile and live inside the burner compartment. Replacement is a technician job.

Source

Goodman furnace code 12: Inducer relay error or improper grounding

Hard lockoutShown as: 12 flashes, then a pause, repeating

Inducer relay error or improper grounding. The control detected a fault in the relay that runs the induced draft blower, or the furnace is not properly grounded.

Manual wording: “Inducer Relay Fault / Improper Grounding”

Documented for: Goodman GMES80, GCES80 (PCBBF145 control board)

Likely causes, most common first

  1. Improperly connected inducer
  2. Bad inducer
  3. Poor unit ground
  4. Faulty integrated control module

When to call a technician

Inducer motor, ground wiring and control board work all require a technician.

Source

Goodman furnace Continuous Rapid Flash: Reversed polarity

Soft lockoutShown as: continuous rapid flash

Reversed polarity. The 115 volt line and neutral wires feeding the furnace (or the control board) are swapped, or the furnace is not properly grounded, so the control will not run the furnace.

Manual wording: “Polarity of 115 or 24 volt power is reversed”

Documented for: Goodman GMES80, GCES80 (PCBBF145 control board)

Likely causes, most common first

  1. Polarity of 115 volt AC power to the furnace or integrated control module is reversed
  2. Orange and gray wires to the transformer are reversed
  3. Poor unit ground

What you can safely check yourself

  • If the furnace was just installed or an electrical outlet or breaker was recently worked on, mention that to whoever wired it - this code almost always follows a wiring change

When to call a technician

Correcting line polarity and grounding is electrical work inside the furnace and the panel. Call the installer or an electrician.

Source

Goodman furnace Continuous On: Normal operation

StatusShown as: continuous on

Normal operation. A steady, non-flashing red LED means the control board sees no faults.

Manual wording: “LED is Steady On. Normal Operation.”

Documented for: Goodman GMS8, GMH8, GDS8, GDH8, GHS8, GME8, GMES80, GCES80, GMSS92, GMSS96, GCSS96 (single red diagnostic LED)

When to call a technician

Nothing to do - this is the healthy state.

Sources

Goodman furnace code OFF: No light at all on the control board

Hard lockoutShown as: off

No light at all on the control board. Either the furnace has no power, the board fuse is blown, or the control board itself has failed.

Manual wording: “Control Failure / No Power / Internal Fault / IRQ Loss”

Documented for: Goodman GMS8, GMH8, GDS8, GDH8, GHS8, GME8, GMES80, GCES80, GMSS92, GMSS96, GCSS96 (single red diagnostic LED)

Likely causes, most common first

  1. Manual disconnect switch OFF, door switch open, or 24 volt wires improperly connected or loose
  2. Blown fuse or tripped circuit breaker
  3. Integrated control module has an internal fault

What you can safely check yourself

  • Check the furnace breaker in the electrical panel and reset it once if it has tripped
  • Check that the switch on or near the furnace (it looks like a light switch) is turned on
  • Check that the furnace door panel is fully closed and seated - the door switch cuts all power when the panel is off

When to call a technician

If the breaker, service switch and door panel are all right and there is still no light, the transformer, board fuse or control board needs a technician.

Sources

Goodman furnace code EE0: Ignition lockout

Soft lockout

Ignition lockout. The furnace made three attempts to light, never proved flame, and locked out. It retries on its own after about an hour.

Manual wording: “Furnace lockout due to excessive number of ignition "retries" (3 total).”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. No gas or improper gas pressure to burners
  2. Bad igniter or igniter alignment
  3. Orifices restricted
  4. Coated/oxidized or improperly connected flame sensor
  5. Restriction in flue and/or lack of combustion air
  6. Improper induced draft blower performance

What you can safely check yourself

  • Make sure the gas is on - check that another gas appliance in the house still works
  • Check that the furnace door panel is fully seated
  • Set the thermostat to Heat and above room temperature
  • Turn the furnace off at its power switch for 30 seconds and back on once to let it retry

When to call a technician

If it locks out again, the igniter, flame sensor, gas pressure or venting all need a technician.

Sources

Goodman furnace code EE1: Low-stage pressure switch was already closed when the heat cycle started, so the control will not light the burners

Soft lockout

Low-stage pressure switch was already closed when the heat cycle started, so the control will not light the burners.

Manual wording: “Low-stage pressure switch circuit closed at start of heating cycle.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Low stage pressure switch contacts sticking
  2. Short in pressure switch circuit wiring

What you can safely check yourself

  • Turn the furnace off at its power switch for 30 seconds and back on once

When to call a technician

A stuck pressure switch is a safety-proving device and must be replaced by a technician, never jumpered.

Sources

Goodman furnace code EE2: Low-stage pressure switch never closed

Soft lockout

Low-stage pressure switch never closed. The draft inducer is running but the control cannot prove venting, so the burners will not light. Usually a blocked vent pipe or a plugged condensate drain.

Manual wording: “Low-stage pressure switch circuit open.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Pressure switch hose blocked, pinched, or connected improperly
  2. Blocked flue pipe and/or inlet air pipe, blocked drain system or weak induced draft blower
  3. Incorrect pressure switch set point or malfunctioning switch contacts
  4. Loose or improperly connected wiring

What you can safely check yourself

  • Check the outdoor intake and exhaust pipes for snow, ice, leaves or a nest
  • Check the condensate drain line and trap for a clog or standing water
  • Make sure drifting snow has not buried the vent terminal

When to call a technician

If the pipes and drain are clear, the pressure switch, hose and inducer need a technician. Do not bypass the pressure switch.

Sources

Goodman furnace code EE3: High limit

Warning

High limit (primary limit) circuit is open - the furnace overheated. The blower keeps running to cool it down. Nearly always an airflow restriction.

Manual wording: “Primary limit circuit open.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Insufficient conditioned air over the heat exchanger
  2. Blocked filters, restrictive ductwork
  3. Improper circulator blower speed or failed circulator blower motor
  4. Loose or improperly connected wiring in high limit circuit

What you can safely check yourself

  • Check the air filter and replace it if dirty
  • Open all supply registers and clear anything blocking them
  • Make sure the return air grille is not blocked

When to call a technician

If the code comes back with a clean filter, a technician needs to find why the furnace is overheating. Never jumper a limit switch.

Sources

Goodman furnace code EE4: Flame was detected when there was no call for heat

Safety fault

Flame was detected when there was no call for heat. The furnace shuts down and keeps the blowers running.

Manual wording: “Flame sensed with no call for heat.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Short to ground in flame sense circuit
  2. Lingering burner flame
  3. Slow closing gas valve

What you can safely check yourself

  • Turn the furnace off at its power switch and leave it off until a technician arrives

When to call a technician

A gas valve that may not be closing fully is an immediate service call. Do not test it yourself.

Sources

Goodman furnace code EE5: The fuse on the control board has blown, so there is no 24 volt control power and the furnace will not run

Hard lockout

The fuse on the control board has blown, so there is no 24 volt control power and the furnace will not run.

Manual wording: “Open fuse.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Blown fuse
  2. Short in low voltage wiring
  3. Back of control board is touching mounting panel because standoffs are missing

What you can safely check yourself

  • Check the furnace breaker in the electrical panel and reset it once if tripped

When to call a technician

The fuse blew because of a short. Replacing it without finding the short just blows another one - have a technician trace the low-voltage wiring.

Sources

Goodman furnace code EE6: Flame sense signal is weak

Warning

Flame sense signal is weak. The furnace still heats, but the sensor is close to the point where the furnace starts failing to light.

Manual wording: “Flame sense micro amp signal is low.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Flame sensor is coated/oxidized
  2. Flame sensor incorrectly positioned in burner flame
  3. Lazy burner flame due to improper gas pressure or combustion air

What you can safely check yourself

  • No homeowner action needed - book service before it becomes an EE0 lockout

When to call a technician

Cleaning or realigning a flame sensor means working in the burner compartment of a live gas appliance.

Sources

Goodman furnace code EE7: Problem with the igniter circuit

Hard lockout

Problem with the igniter circuit. The control detected a shorted or miswired hot surface igniter, or its own igniter relay has failed.

Manual wording: “Problem with igniter circuit.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Improperly connected igniter
  2. Shorted igniter
  3. Poor furnace ground
  4. Igniter relay fault on integrated control module

When to call a technician

Igniter and control board diagnosis are technician work.

Sources

Goodman furnace code EE8: High-stage pressure switch was already closed when the heat cycle started

Warning

High-stage pressure switch was already closed when the heat cycle started. The furnace usually still runs on low stage, so heat feels weak on cold days.

Manual wording: “High-stage pressure switch circuit closed at start of heating cycle.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. High stage pressure switch contacts sticking
  2. Short in pressure switch circuit wiring

What you can safely check yourself

  • Turn the furnace off at its power switch for 30 seconds and back on once

When to call a technician

Pressure switch replacement is technician work and must never be jumpered out.

Sources

Goodman furnace code EE9: High-stage pressure switch never closed, so the furnace will not go to high fire

Warning

High-stage pressure switch never closed, so the furnace will not go to high fire. It usually keeps heating on low stage, which feels underpowered in cold weather.

Manual wording: “High-stage pressure switch circuit open.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Pressure switch hose blocked, pinched, or connected improperly
  2. Blocked flue pipe and/or inlet air pipe, blocked drain system or weak induced draft blower
  3. Incorrect pressure switch set point or malfunctioning switch contacts
  4. Loose or improperly connected wiring

What you can safely check yourself

  • Check the outdoor intake and exhaust pipes for snow, ice or debris
  • Check the condensate drain line and trap for a clog

When to call a technician

If the venting and drain are clear, the high-stage pressure switch and inducer need a technician.

Sources

Goodman furnace code E10: Grounding fault

Soft lockout

Grounding fault. The control does not see a good neutral or ground connection to the furnace and will not operate.

Manual wording: “Grounding fault. Poor neutral connection.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Poor neutral connection
  2. Loss of continuity to the ground source

When to call a technician

Neutral and ground continuity is electrical work at the furnace and the panel. Call the installer or an electrician.

Sources

Goodman furnace code E11: Rollout switch is open

Safety fault

Rollout switch is open. A manual-reset safety on the burner assembly tripped because flame rolled out of the heat exchanger instead of being pulled into it.

Manual wording: “Open rollout switch.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Gas pressure too high
  2. Burners mis-aligned
  3. Restricted heat exchanger or venting

What you can safely check yourself

  • Turn the furnace off at its power switch and leave it off
  • If you smell gas, leave the house and call the gas utility from outside

When to call a technician

Flame rollout means combustion gases escaped the burner box. Technician only - never reset a rollout switch yourself.

Sources

Goodman furnace code EEA: Line polarity is reversed

Soft lockout

Line polarity is reversed. The 115 volt hot and neutral feeding the furnace are swapped, or the furnace ground is poor, so the control refuses to run.

Manual wording: “Polarity if 115 volt AC is reversed.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Polarity of 115 volt AC power to furnace or integrated control module is reversed
  2. Poor furnace ground

What you can safely check yourself

  • If the furnace was just installed or the circuit was recently rewired, tell the installer - this code follows wiring changes

When to call a technician

Fixing polarity and ground is electrical work. Call the installer or an electrician.

Sources

Goodman furnace code EEB: The control board is not energizing the gas valve when it should be

Hard lockout

The control board is not energizing the gas valve when it should be. No gas, no heat.

Manual wording: “Integrated Control Board is not energizing the gas valve when it should be on.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Miswired gas valve circuit
  2. Open gas valve circuit
  3. Gas valve relay on integrated control board stuck open

When to call a technician

Gas valve circuit diagnosis is technician work. The manual is explicit that the control board, not the gas valve, is the part to replace for this code.

Sources

Goodman furnace code EEC: The gas valve is energized when it should be off

Safety fault

The gas valve is energized when it should be off. The control shuts the furnace down because gas could be flowing when it should not.

Manual wording: “Gas valve is energized when it should be off.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Miswired gas valve circuit
  2. Shorted gas valve wiring

What you can safely check yourself

  • Turn the furnace off at its power switch and leave it off until a technician arrives

When to call a technician

Any code that means the gas valve may be powered when it should not be is an immediate service call.

Sources

Goodman furnace code EED: Auxiliary limit switch in the blower compartment is open

Warning

Auxiliary limit switch in the blower compartment is open. Like the main limit, this is an overheat trip caused by poor airflow.

Manual wording: “Aux limit switch open (blower compartment)”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Blocked filters
  2. Blocked or restrictive ductwork
  3. Improper circulator blower speed
  4. Failed circulator blower motor
  5. Loose or improperly connected wiring

What you can safely check yourself

  • Check the air filter and replace it if dirty
  • Open all supply registers and clear anything blocking them
  • Make sure the return air grille is clear

When to call a technician

If it repeats after a clean filter, the blower or duct system needs a technician. Never jumper a limit switch.

Source

Goodman furnace code EEE: The furnace control board detected an internal fault in itself and stopped

Hard lockout

The furnace control board detected an internal fault in itself and stopped.

Manual wording: “Furnace control board has detected an internal fault.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. 120VAC power wiring loose or damaged
  2. Poor ground wire
  3. Damaged or miswired 120V or 24V wiring on the furnace

What you can safely check yourself

  • Turn power off to the furnace at its switch for at least 3 minutes, then back on, to see if the code clears

When to call a technician

If EEE returns, the control board and its power wiring need a technician. The manual warns not to replace other components based on this code.

Sources

Goodman furnace code EEH: Twinning error

Soft lockout

Twinning error. Two furnaces are set up to run as a pair and the controls cannot communicate, so the blowers will not run together.

Manual wording: “Error with Twinning function.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Both furnaces not on the same 120VAC power from the breaker panel
  2. Low voltage wiring error or loose wiring connections
  3. Damaged twinning wire between the two control boards

When to call a technician

Twinned furnace wiring is an installer configuration. Call the contractor who installed the pair.

Sources

Goodman furnace code EEJ: Inducer motor relay error

Hard lockout

Inducer motor relay error. The relay on the control board that runs the induced draft blower has failed.

Manual wording: “Inducer motor relay error.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Inducer motor relay issue in the integrated control board

When to call a technician

The manual calls for replacing the integrated control board and warns not to replace other parts based on this code. Technician only.

Sources

Goodman furnace code EEL: Igniter relay fault

Hard lockout

Igniter relay fault. The control detected a shorted or miswired igniter, or its own igniter relay failed.

Manual wording: “Problem with ignitor circuit.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Improperly connected ignitor
  2. Shorted ignitor
  3. Poor furnace ground
  4. Ignitor relay fault on integrated control module

When to call a technician

Igniter and control board work require a technician.

Sources

Goodman furnace code EEN: Igniter open

Hard lockout

Igniter open. The control cannot see a complete circuit through the hot surface igniter - usually a cracked igniter or an unplugged igniter connector.

Manual wording: “Ignitor open.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Loose or incorrect wiring from integrated control board to ignitor
  2. Damaged ignitor

When to call a technician

Hot surface igniters are fragile and sit in the burner compartment. Replacement is a technician job.

Sources

Goodman furnace code EBL: The circulator blower motor is drawing far less current than expected after the heat-on delay, so the control locks the furnace out

Hard lockout

The circulator blower motor is drawing far less current than expected after the heat-on delay, so the control locks the furnace out.

Manual wording: “Circulator blower motor is consuming very little current after heat ON delay - below expected value.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Loose wiring connections to and from the blower motor
  2. Circulator blower motor 120 volt L1 wire is not plugged into the CIRC-H connection on the integrated control board
  3. Heating blower speed not set correctly
  4. Circulator blower motor failure

When to call a technician

Blower motor wiring and speed setup are inside the blower compartment. Technician only.

Sources

Goodman furnace code NONE: The display shows 'nonE' or nothing at all - the control has no power, or the board is dead

Hard lockout

The display shows 'nonE' or nothing at all - the control has no power, or the board is dead.

Manual wording: “No 120VAC power to furnace or no 24 volt power to integrated control module.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Blown fuse or tripped circuit breaker
  2. Manual disconnect switch turned OFF, door switch open or 24 volt wire improperly connected or loose
  3. Furnace electrical supply shared with other devices
  4. Integrated control module is non-functional

What you can safely check yourself

  • Check the furnace breaker in the electrical panel and reset it once if it has tripped
  • Check that the service switch on or near the furnace is on
  • Check that the furnace door panel is fully seated - the door switch cuts power when the panel is off

When to call a technician

If the breaker, switch and door panel are fine and there is still no display, the transformer or control board needs a technician.

Sources

Goodman furnace code EAL: On an R-32 refrigerant system, the leak sensor detected refrigerant and put the furnace into mitigation mode - the blower runs to disperse it and normal heating is suspended

Safety fault

On an R-32 refrigerant system, the leak sensor detected refrigerant and put the furnace into mitigation mode - the blower runs to disperse it and normal heating is suspended.

Manual wording: “R-32 sensor has detected a refrigerant leak and furnace is in mitigation mode.”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Refrigerant leak at the indoor coil

What you can safely check yourself

  • Leave the furnace powered so the blower can keep running in mitigation mode
  • Call for service - do not disable the sensor or the mitigation blower

When to call a technician

A refrigerant leak at the indoor coil is a technician repair. The furnace clears the code on its own once no leak is detected and the 5-minute delay ends.

Source

Air Conditioner codes

CodeMeaningSeverity
EEFThe condensateWarning

Goodman air conditioner code EEF: The condensate

Warning

The condensate (auxiliary alarm) switch is open - water is backing up in the evaporator coil drain pan. The control turns off the outdoor unit until it clears.

Manual wording: “Aux limit switch (condensate switch) open”

Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)

Likely causes, most common first

  1. Water level in the evaporator coil base pan has reached an undesirable level
  2. Blocked condensate drain, trap or piping

What you can safely check yourself

  • Check the condensate drain line and trap for a clog or standing water
  • Check for water in or around the drain pan under the indoor coil

When to call a technician

If the drain is not obviously clogged, or you cannot clear it safely, have a technician clear the drain and check the float switch.

Source

How old is this Goodman?

Age changes what a fault code means for you. The same failure is a routine repair on a six-year-old unit and the end of the line on a twenty-year-old one. Your Goodman serial number has the build date in it.

Decode your Goodmanserial number →

Manuals used for this page