Cold Room Controller Repairs in Sandton

The controller manages room temperature, defrost cycles and alarms. A faulty controller can cause temperature swings, failed defrost, or false alarms — and is often misread as a refrigeration fault.

Controller diagnosis checks the temperature sensor against a reference, verifies defrost settings and operation, tests the control board and wiring, and confirms whether the fault is the controller or the refrigeration system it controls. We do not assume a controller fault without testing.

Repair options include sensor replacement, defrost schedule correction, control board repair or replacement, and recalibration. Where a controller is obsolete, a compatible replacement controller is fitted and reprogrammed.

Controller and sensor checks at each service visit catch drift and faults before they affect stock temperature. Sensor calibration is part of planned maintenance.