SVR-0424 MIN RESPONSE
Temperature Faults
When the setpoint drifts, the clock is ticking
Temperature faults are the silent killer of commercial refrigeration in Wonderboom. The room is still running, the compressor still cycles — but the product is slowly warming past its safe holding range. Accurate diagnosis separates a five-minute sensor fix from a full refrigerant recharge.
TECHNICAL SPECIFICATION
Temperature Faults — service specification
Symptoms
- ▸ Reading 1°C – 3°C above setpoint with no obvious cause
- ▸ Controller showing error codes or erratic readings
- ▸ Intermittent high-temperature alarms
- ▸ Product temperature not matching the air-on reading
- ▸ Defrost terminating early or late
Root causes
- ▸ Drifting or failed air-on / air-off sensors
- ▸ Miscalibrated defrost termination thermostat
- ▸ TXV hunting from incorrect superheat setting
- ▸ Dirty or iced coil reducing heat-transfer efficiency
- ▸ Controller logic or relay output failure
Repair process
- 01 Calibrated probe verification against a reference thermometer
- 02 Superheat and subcooling measurement at the TXV
- 03 Defrost timing and termination audit
- 04 Sensor and controller recalibration or replacement
- 05 Logged 24-hour temperature verification after repair
TEMPERATURE FAULTS — AREA COVERAGE
Temperature Faults across the Wonderboom corridor
Emergency Call
Temperature Faults? Speak to a technician now
Direct line to a refrigeration engineer. 24/7 emergency breakdown cover across Wonderboom & Pretoria North.
069 268 0988
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