Furnace Fault Codes

Goodman GCVM97 / GCVM96 / GMVM96 / GMVM97 and Amana ACVM96 / ACVM97 / AMVM96 / AMVM97 furnace fault codes

Every diagnostic code published for the GCVM97 series — 43 of them — taken from the manufacturer's own per-model fault code database rather than from a general table.

Codes differ between models from the same manufacturer, which is why this list is worth reading in preference to a brand-wide one. No code below contradicts another Goodman model that publishes its own list. At 43 codes it is the longest list of any Goodman board here — the shortest, the GMP, publishes 8. The same board is sold as Amana ACVM96 / ACVM97 / AMVM96 / AMVM97 and Goodman GCVM96 / GMVM96 / GMVM97, with the same code list.

GCVM97 fault codes

What the LED showsWhat it means
b0Blower motor is not running
b1Blower communication error
b2Blower motor horsepower mismatch
b3Blower motor operating at a power, temperature, or speed limit
b4Blower motor current trip or lost rotor
b5Blower motor locked rotor
b6Blower motor over or under voltage trip, or over temperature trip
b7Incomplete parameters sent to the motor
b9Low indoor airflow
d0Data not yet on network
d4Invalid memory card data
E0Lockout after too many failed ignition attempts
E1Low stage pressure switch closed at the start of the heating cycle
E2Low stage pressure switch stuck open
E3High limit switch is open — the furnace is overheating
E4Flame detected when no flame should be present
E5Low voltage fuse is open
E6Flame signal is too weak
E7Igniter fault or improper grounding
E8High stage pressure switch closed at the start of the heating cycle
E9High stage pressure switch stuck open
EAReversed 115 volt polarity
ECInducer motor overcurrent
EdRollout switch has tripped
EFAuxiliary switch or input is open
FContinuous fan
FtField test mode
IFInternal control fault
LED offNo power to the furnace, or an internal control fault

Codes that are not faults

These 14 indications mean the furnace is doing something normal — running a stage, moving air for cooling, or sitting idle. They are listed separately so they do not get counted as problems.

What the LED showsWhat it means
AAirflow display, followed by the CFM value
CCompressor cooling with a single stage compressor
C1Low stage compressor, cooling mode
C2High stage compressor, cooling mode
continuous onNormal operation — no fault stored
dDehumidification cooling with a single stage compressor
d1Dehumidification, low stage cooling, communicating mode
d2Dehumidification, high stage cooling, communicating mode
dFDefrost demand
HGas heat demand, followed by the demand percentage
HIHigh heat at 100 per cent demand
PCompressor heating with a single stage compressor
P1Low stage compressor, heating mode
P2High stage compressor, heating mode

Other models with their own code list

What the fix costs

For what a technician visit and this kind of repair typically runs, see the furnace repair cost guide.

What this looks like

From the outside, this usually shows up as the vents blowing cold air on a heat call — that walkthrough covers what to check in order, and when it stops being a homeowner job.

This site is a reference, not a substitute for a licensed HVAC technician. Gas appliances can leak carbon monoxide and cause fire. Anything involving gas lines, the heat exchanger, or the flame sensing circuit should be handled by a licensed professional. Pages are written with AI assistance from the sources listed on each page and checked against them before publishing.

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