Tempstar
Short Cycling
Tempstar air conditioner short cycles, turning on and off frequently
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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
Oversized system, Thermostat located near supply vent or heat source, Low refrigerant charge, High-pressure or low-pressure safety switch tripping
How to Fix / Troubleshooting
Safety first: Do not repeatedly reset breakers or disconnects.
Steps:
- 1. Check thermostat location: Ensure it is not directly in the airflow of a supply vent or in direct sunlight. Redirect vents if necessary.
- 2. Replace air filter: A clogged filter can cause freeze-ups and safety trips.
- 3. Observe outdoor unit: Watch the Tempstar condenser during operation. If it stops abruptly and restarts after a few minutes, a safety switch may be tripping due to pressure issues.
- 4. Avoid tampering with safeties: Do not bypass pressure switches.
- 5. Call a technician: A professional should check refrigerant charge, system sizing, and safety switch operation.
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Repair Difficulty
Medium
3/5
Required Part
High-Pressure Switch
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