Goodman Air Conditioner Error Code EH

EH stands for Emergency Hydronic Engaged on a Goodman air conditioner. It means the Emergency Hydronic Heating switch (EHH) is in the closed position, which causes the control board to shut off the compressor. This is a deliberate operational mode designed to allow a backup hydronic heating system to take over. It is not a malfunction code but a status indicator tied to a physical switch.

The EH code itself is not a safety hazard. It is a control function that disables the compressor while a hydronic heating source is active, which is intentional design behavior to prevent simultaneous system operation. However, if the code appears unexpectedly and the hydronic heat is not actually needed, leaving it unaddressed means the air conditioning compressor will remain off, reducing comfort and system functionality.

If the EH code is simply caused by the EHH switch being in the closed position, there is no repair cost since opening the switch resolves it immediately. If the switch itself has failed with stuck or shorted contacts, replacement switch parts and labor costs could range from around 50 to 200 dollars depending on the specific component and local labor rates. A wiring repair, if needed, would fall in a similar range depending on the extent of the damage.

To clear the EH code, locate the Emergency Hydronic Heating switch on the front of the unit and open it, meaning move it to the off or open position. Once the switch is open, the compressor lockout is released and normal operation should resume. If the code persists after opening the switch, the switch contacts or the connected wiring may need to be inspected and tested for continuity.

A simple power reset will not permanently clear the EH code if the EHH switch remains in the closed position, because the control board will detect the closed switch state again at startup and re-engage the lockout. The code will only clear reliably when the EHH switch is physically opened. If the switch is already open and the code still returns after a reset, there is likely a wiring or switch contact issue that needs further diagnosis.