04
Urgent Est. response 60–120 min
Thermostat Fault — Commercial Refrigeration Fault
Symptoms
- S01Incorrect temperature readings on the display
- S02Unit won't cycle off or won't start
- S03Overcooling or undercooling against the setpoint
- S04Alarm or logging showing erratic values
Possible Causes
- C01Faulty thermostat or controller board
- C02Failed or drifted temperature sensor
- C03Wiring fault or loose connection
- C04Calibration drift over service life
The Reyds Solution
We test the controller and sensor against a calibrated reference, replace the faulty component, and recalibrate the setpoint so your unit cycles accurately and reliably.
Find a repair for this fault
Select your equipment, then drill into your industry and Cape Town area to open the full diagnostic sheet for thermostat fault.
Emergency Dispatch
Thermostat Fault? Speak to a technician now.