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Goodman / Amana GMVS96 / AMVS96 U-revision Furnace Codes
Covers the U-revision GMVS96 and Amana AMVS96 only. Earlier GMVS96 furnaces use pressure switches and a different chart; check the model number on the rating plate.
| Code | Meaning | What to check |
|---|---|---|
| d0 | Equipment lacks shared data. | Populate the shared data set using the memory card. |
| Eb0 | Circulator blower motor is not running when it should be running. | Wiring connections, continuity through the inductor, the motor. |
| Eb1 | Integrated control module has lost communications with the circulator blower motor. | Wiring connections, motor, then the control. |
| Eb2 | Circulator blower motor horsepower in the shared data set does not match the motor. | Motor horsepower against the nameplate; reload shared data with the correct memory card. |
| Eb3 | Circulator blower motor is operating in a power, temperature, or speed limiting condition. | Filters, blocked ductwork, closed registers, duct sizing. How to fix → |
| Eb4 | Circulator blower motor senses a loss of rotor control or high current. | Filters, grilles, registers and ducts for blockage. How to fix → |
| Eb5 | Circulator blower motor fails to start 10 consecutive times. | Obstruction in the blower, wheel and shaft rotation, motor. |
| Eb6 | Circulator blower motor shuts down for over or under voltage, or for over temperature on the power module. | Voltage to the furnace against the nameplate range. |
| Eb7 | Circulator blower motor lacks information to operate properly, or fails to start 40 consecutive times. | Locked rotor; confirm the control has the correct shared data. |
| Eb9 | Airflow is lower than demanded. | Filters, blocked ductwork, closed registers, duct sizing. How to fix → |
| E1b | Analog pressure sensor reference error: APS reference out of range (5.0 +/- 0.2 V) for 5 seconds. | Electrical connections to the pressure sensor. How to fix → |
| E1c | Analog pressure sensor null error: inconsistent pressure reading with the inducer off. | Electrical connections to the pressure sensor. How to fix → |
| E1d | Analog pressure sensor span error: inconsistent pressure reading with the inducer on. | Electrical connections to the pressure sensor. How to fix → |
| E1E | Analog pressure error (blocked vent error). | Blocked vent, or the pressure sensor or its connection. The pressure could not reach its target with the inducer at maximum or minimum RPM. How to fix → |
| E1F | Analog pressure sensor input error: sensor input voltage out of range for 5 seconds. | The pressure sensor and its connection. |
| E10 | Grounding fault or poor neutral connection. | Neutral connection to the furnace and continuity to ground. |
| E11 | Open rollout switch. | Gas pressure, burner alignment, burner restriction. How to fix → |
| Ed0 | Data not yet on network. | Populate the shared data set using the memory card. |
| Ed1 | Invalid memory card data. | Confirm the shared data set is right for the model; reload with the correct memory card. |
| EE0 | Lockout after too many ignition retries (3 total): failure to establish flame or loss of flame after it was established. | Gas supply, front cover pressure switch and drainage, igniter, flame sensor, flue piping, inducer. How to fix → |
| EE1 | Low stage pressure switch circuit is closed at the start of the heating cycle. | Sticking switch contacts or a short in the switch wiring. How to fix → |
| EE2 | Low stage pressure switch circuit is not closed. Inducer runs continuously with no furnace operation. | Switch hose, blocked flue or inlet pipe, blocked drain, weak inducer, wrong switch, loose wiring. How to fix → |
| EE3 | Primary limit circuit is open. Circulator blower runs continuously. | Filters, restrictive ductwork, blower speed or failed blower motor, limit wiring. How to fix → |
| EE4 | Flame sensed with no call for heat. Inducer and blower run continuously. | Short to ground in the flame sense circuit; lingering flame from a slow-closing gas valve. |
| EE5 | Open fuse. | Short in the low voltage wiring. Fix it, then replace the fuse. How to fix → |
| EE6 | Flame sense microamp signal is low (furnace still operates). | Coated or mispositioned flame sensor; lazy flame from gas pressure or combustion air. How to fix → |
| EE7 | Problem with the igniter circuit. | Igniter wiring, shorted igniter, unit ground, igniter relay on the control. How to fix → |
| EE8 | High stage pressure switch circuit is closed at the start of the heating cycle. Furnace runs on low stage only. | Sticking switch contacts or a short in the switch wiring. How to fix → |
| EE9 | High stage pressure switch circuit is not closed. Furnace runs on low stage only. | Switch hose, flue and inlet piping, drain, inducer, wiring. How to fix → |
| EEA | Polarity of 115 volt AC is reversed, or poor unit ground. | Correct polarity and ground. |
| EEb | Gas valve is not energized when it should be (external gas valve error). | Gas valve circuit wiring; control board. |
| EEC | Gas valve is energized when it should not be (internal gas valve error). | Gas valve circuit wiring; control board. |
| EEd | Aux limit switch open (blower compartment). | Filters, ductwork, blower speed and motor, wiring. How to fix → |
| EEF | Aux switch (condensate switch) open. | Evaporator drain pan, trap and piping. How to fix → |
How to read the codes
- Status codes are not faults: 'IdL' idle; 'gH' gas heat; 'FAn' constant fan; 'dHU' dehumidification; 'dFt' defrost; 'AC' and 'HP' codes show compressor cooling and heating.
- Fault recall: the diagnostic menu ('L6F') holds the last six faults, most recent first; a repeated fault is stored at most three times. Goodman recommends clearing the history when servicing.
- E1b to E1F are analog pressure sensor faults, which this furnace uses to prove venting. Eb codes are circulator blower faults.
Codes point to a circuit, not a part. Test before replacing anything, and never jumper a limit, rollout or pressure switch to keep a furnace running. Gas and line-voltage work is for trained technicians.
Source: Goodman Service Instructions, GMVS96*U and AMVS96*U gas furnaces, Troubleshooting chart, pp. 34-39. The "meaning" column follows the manufacturer's wording; "what to check" is our field summary. Always go by the label on the furnace you're working on.
Related
- How to read furnace LED flash codes
- Furnace pressure switch troubleshooting
- Flame sensor microamps and cleaning
Other brands
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- Trane / American Standard S9X1 / S9X2 / S9B1 (96% condensing)
- Lennox SL280UHV (80% two-stage variable speed)
- Goodman / Amana / Daikin GM9S96 / GC9S96 / GM9S92 (96% and 92% condensing, single-stage)
- Carrier 59TP6C two-stage condensing with InteliSense (Performance series)
- Lennox G60DF / G60DFV (older two-stage SureLight boards 18M3401, 46M9901, 18M9901, 49M5901)
- Lennox G60UH / G60UHV (SureLight boards 100869 and 100870)
- Rheem / Ruud R801T Ultra Low NOx (14 ng/J) single-stage upflow/horizontal, constant-torque blower
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- Trane / American Standard S8B1 / S8X1 / S8X2 (80% single-stage and two-stage)
- Goodman / Amana GMVC96 / GCVC96 (96% two-stage variable-speed, *MVC96*BA and *CVC96*BA)
- Goodman / Amana GMVM96 / GCVM96 / AMVM96 / ACVM96 (96% modulating, model numbers *MVM96 and *CVM96)
- Rheem / Ruud R801T / 80MSX (80% single-stage, constant-torque blower; model numbers (-)801T and (-)(-)80MSX)
- Rheem / Ruud 802P / 80MDP (80% two-stage, model numbers (-)802P and (-)(-)80MDP)
- Rheem / Ruud 802T / 80MDT (80% two-stage with constant-torque blower, model numbers (-)802T and (-)(-)80MDT)
- Rheem / Ruud 801S / 801P / 80MSS / 80MSP (80% single-stage, model numbers (-)801S, (-)801P, (-)(-)80MSS and (-)(-)80MSP)
- Carrier 58STA / 58STX (80% single-stage, 4-way multipoise)
- Carrier 58SB0A / 58SB1A (single-stage, non-condensing)
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