Goodman Stuck Contactor or Control Relay

Goodman air conditioner outdoor unit will not turn off even when thermostat is satisfied

Advertisements

Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Advertisements

Possible Causes

Welded compressor contactor in Goodman condenser, Shorted thermostat wiring (Y to R), Faulty indoor control board sending constant call for cooling, Miswired thermostat

How to Fix / Troubleshooting

Safety first: Turn off power at the outdoor disconnect and indoor breaker if the unit will not shut off.

Steps to check:

  • 1. Thermostat test: Turn the thermostat to OFF. If the outdoor unit continues to run, the issue is likely in the condenser or wiring, not the thermostat.
  • 2. Inspect contactor: With power off, examine the contactor. If the contacts are welded closed, the contactor will need replacement.
  • 3. Check thermostat cable: Look for shorts between Y and R wires at the thermostat and indoor control board.

When to call a professional: Replacing the contactor and correcting wiring faults should be done by an HVAC technician to ensure safe operation.

Advertisements

Repair Difficulty

Hard 4/5

Required Part

Compressor contactor
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements