Sencor
Short Cycling
Unit frequently turns on and off (short cycling) within a few minutes, without reaching set temperature.
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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 unit for room size, Blocked air intake causing sensor misread, Faulty room temperature sensor, Control PCB logic fault
How to Fix / Troubleshooting
Safety first: Unplug before accessing internal sensors.
- Step 1 – Check placement: Ensure the Sencor unit is not installed in a corner or behind curtains where air recirculates quickly around the sensor.
- Step 2 – Clean filters and intake: Dirty filters can cause the sensor to read incorrect temperatures. Clean thoroughly.
- Step 3 – Adjust setpoint and mode: Avoid setting the temperature extremely low; use a moderate setpoint and AUTO fan mode.
- Step 4 – Inspect room sensor: Verify the room sensor is properly located in the air stream and not touching cold metal surfaces. Replace if readings are unstable.
- Step 5 – PCB check: Persistent short cycling with correct sensor operation may require PCB replacement by a technician.
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Repair Difficulty
Medium
3/5
Required Part
Room Temperature NTC Sensor
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