COLD ROOM BREAKDOWN? 24/7 Emergency Repairs — 069 268 0988 · info@reyds.co.za
Service Hub · 24/7 Johannesburg

Temperature Controller Repairs Johannesburg

The temperature controller governs the entire system. A faulty controller can mimic a refrigeration fault — and a misdiagnosed controller often leads to unnecessary compressor replacement.

Fault Symptoms
  • [01]Temperature reading incorrect
  • [02]Controller showing fault code
  • [03]System not following setpoint
  • [04]Defrost schedule lost
Possible Causes
  • [01]Sensor failure
  • [02]Controller logic fault
  • [03]Electrical damage
  • [04]Configuration loss
Professional Diagnostic Process

We verify the sensor against a reference, review the controller configuration and test outputs to the compressor and defrost circuits.

Repair Process

We repair or replace controllers and sensors, reprogram defrost schedules and restore correct setpoints.

Frequently Asked Questions

My controller shows a fault code — what does it mean?

Codes vary by manufacturer. We identify the code and its cause before recommending any action.

Could the controller be the problem, not the compressor?

Yes — and we test the controller first to avoid replacing a compressor that is actually fine.

Can you replace an old controller with a modern one?

Yes. We upgrade to current controllers with better defrost logic and alarm features.