Furnace Fault Codes

Goodman GCVC96 / GCVC8 / GCVC95 / GMVC95 and Amana ACVC95 / ACVC96 / AMVC95 / AMVC96 furnace fault codes

Every diagnostic code published for the GCVC96 series — 31 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. Its 31 codes put it 3rd of 10 Goodman lists by length, between the GCVM97 at 43 and the GMP at 8. The same board is sold as Amana ACVC95 / ACVC96 / AMVC95 / AMVC96 and Goodman GCVC8 / GCVC95 / GMVC95, with the same code list.

GCVC96 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
FContinuous fan
LED offNo power to the furnace, or an internal control fault

Codes that are not faults

These 7 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
C1Low stage compressor, cooling mode
C2High stage compressor, cooling mode
continuous onNormal operation — no fault stored
HIHigh heat at 100 per cent demand
LOLow stage heat
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.

Source