Goodman Error Codes

Find troubleshooting guides for all Goodman error codes.

14 error codes across 1 appliance types

Furnace

Code	Meaning	Severity
1DL	The control board's internal watchdog timer has tripped, indicating a communication error, internal board fault, or an abnormal operating condition that the main processor could not resolve. moderate	moderate
7P1	The draft inducer (combustion air blower) motor failed to start, stalled, or did not reach operating speed within the allowed time. high	high
9H	The high-stage pressure switch opened during operation, meaning the induced draft pressure is too high, too low, or the secondary heat exchanger is restricted. On condensing furnaces, this almost always comes down to condensate that can't move through the system properly. high	high
E1C	The flame sensor is detecting a flame signal when no call for heat is active and no ignition sequence has been started. That's unexpected and potentially dangerous because it means either the sensor's lying to the board, or there's actually gas burning somewhere when it shouldn't be. moderate	moderate
E2	The rollout limit switch has tripped, indicating that flames have exited the combustion chamber and moved toward areas they should not reach. critical	critical
E3	The control board fired up the draft inducer but never got confirmation the pressure switch closed. It can't prove the inducer moved enough air to safely vent combustion gases, so it shuts down before letting gas flow. Safety lockout, plain and simple. high	high
E5	A general pressure switch circuit fault - the switch circuit is either open when it should be closed, short-circuited, or the switch failed to transition correctly during the startup sequence. high	high
EAF	The flame sensor is reading a microamp signal that falls outside the acceptable range during a heat cycle - either too weak to confirm a stable flame or erratic. moderate	moderate
EE3	The furnace has experienced three consecutive F01-type ignition failures in a row without a successful heat cycle between them, triggering a deeper lockout state. high	high
EE5	The furnace has failed ignition five consecutive times without any successful heat cycle, entering the deepest safety lockout state. A 3-second power reset hold is required to clear. high	high
F01	The furnace attempted ignition three times and failed to detect a flame each time, triggering a safety lockout. high	high
F02	The pressure switch is closed and triggered before the inducer motor has even started. That means the board thinks there's already pressure in the vent system when there shouldn't be. Usually it's condensate backup, a kinked hose, or a switch that's physically stuck closed. moderate	moderate
HUB	The control board stores fault events and flashes them through an LED. Short blinks are the tens digit, long blinks are the ones digit. So two short flashes, three long ones means code 23. Newer GMVC96 models skip all that and just show alphanumeric codes like F01 on a small display instead, which is way easier to deal with. low	low
RESET	When a fault code trips, the control board's microprocessor latches into a locked state and refuses to run the ignition sequence again. Depending on the fault type, that lockout clears with a power cycle, a thermostat cycle, or a physical reset button press on a safety switch. low	low