Cold Room Defrost Fault
A defrost fault lets ice build up on the evaporator coil until the cold room can't cool properly. The cause can be a failed defrost heater, a faulty timer, a stuck defrost terminator or a blocked drain. We diagnose the defrost system and repair it to keep the coil clear.
What causes cold room defrost fault
- Open-circuit defrost heater
- Failed defrost timer or controller
- Stuck defrost terminator
- Blocked or frozen drain line
- Defrost frequency set too low
- Failed defrost fan delay
How we diagnose this fault
Heater continuity and resistance test
Defrost timer/controller function test
Terminator sensor calibration
Drain line inspection and clear
Defrost cycle observation
Ice pattern analysis on coil
How we repair it
We replace the failed component (heater, timer, terminator), clear the drain and set the correct defrost schedule for your room's conditions.
Why Pretoria businesses trust us
- Specialist fault diagnosis with precision tools
- Genuine parts stocked on every van
- Upfront fixed quotes — no surprise charges
- 24/7 emergency response across Pretoria
- Workmanship guarantee on every repair
What is failing?
Select your fault. We'll dispatch a stocked van and get your cold room back to temperature — fast.
Cold Room Defrost Fault across all Pretoria suburbs
Cold Room Defrost Fault — your questions
Almost always a defrost fault — failed heater, timer or blocked drain. We diagnose and repair it.
Cold Room Defrost Fault in Pretoria? We fix it fast.
Certified technicians · stocked vans · 24/7 across Pretoria.