Fault Diagnostic · 24/7 Johannesburg
Cold Room Evaporator Icing Up
An icing evaporator is almost always a defrost or airflow problem, not a refrigerant problem. Regassing an iced evaporator makes the problem worse — we diagnose first.
Fault Symptoms
- [01]Ice covering the evaporator coil
- [02]Reduced airflow
- [03]Rising temperature
- [04]Water leak when ice melts
Possible Causes
- [01]Defrost heater or timer failure
- [02]Evaporator fan failure
- [03]Door seal leak adding moisture
- [04]Blocked airflow
Professional Diagnostic Process
We test the defrost heaters, timer, termination sensor, fan and door seal to find why ice is forming.
Repair Process
We repair the defrost system, restore airflow and seal the envelope — addressing the cause of the ice, not just the ice itself.
Frequently Asked Questions
What causes cold room evaporator icing up?
Defrost heater or timer failure, Evaporator fan failure, Door seal leak adding moisture, Blocked airflow.
Is cold room evaporator icing up an emergency?
If stock is at risk or temperature is out of control, treat it as an emergency and call immediately.
How is cold room evaporator icing up repaired?
We repair the defrost system, restore airflow and seal the envelope — addressing the cause of the ice, not just the ice itself.
This Fault in Every Johannesburg Suburb
Johannesburg
Greater Johannesburg
~35m
Johannesburg CBD
Central
~30m
Sandton
Northern
~25m
Rosebank
Northern
~25m
Bryanston
Northern
~30m
Rivonia
Northern
~30m
Morningside
Northern
~28m
Randburg
North-Western
~35m
Fourways
Northern
~40m
Roodepoort
Western
~45m
Midrand
Central
~50m
Woodmead
Northern
~30m
Sunninghill
Northern
~32m
Melrose
Northern
~26m
Hyde Park
Northern
~28m
Illovo
Northern
~27m
Bedfordview
Eastern
~35m
Edenvale
Eastern
~40m
Kempton Park
Eastern
~45m
Internal Linking Engine