Keeprite Continuous Operation / Won't Shut Off

Keeprite air conditioner runs continuously and rarely shuts off, even when the set temperature is reached.

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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.

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Possible Causes

Thermostat miscalibrated or stuck, Thermostat wiring short between R and Y, Undersized system, Extremely high heat load, Stuck contactor

How to Fix / Troubleshooting

Safety first: Turn off power before opening the outdoor unit or thermostat.

  • Step 1 – Verify temperature: Use a separate thermometer near the thermostat to confirm room temperature. Adjust thermostat calibration if needed.
  • Step 2 – Check thermostat wiring: Remove the thermostat from its base. If the outdoor unit stops, the thermostat may be stuck or miswired. Replace if necessary.
  • Step 3 – Inspect contactor: With power off, check if the contactor contacts are welded closed. Replace if they do not open freely.
  • Step 4 – System sizing: If the system runs continuously only on very hot days but maintains temperature, this may be normal for an undersized unit. Consult an HVAC professional for load calculation.
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Repair Difficulty

Medium 3/5

Required Part

Contactor
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