LG Defrost System Repairs in Johannesburg
Ice building up on the back wall of your LG fridge is the classic sign of a defrost system failure. In Johannesburg, humid kitchen air and worn defrost components cause the evaporator to freeze solid, blocking cold-air flow to the fridge. Reyds tests the heater, bi-metal, defrost sensor and control board to restore automatic defrosting.
- Avg. response time45–90 minutes
- Lead technicianDavid
- CoverageJohannesburg
- Parts stockedOn van
› Defrost heater replaced · sandton
› Ice maker valve replaced · Johannesburg
Common Symptoms in Johannesburg
- Thick frost on the evaporator cover
- Fridge warm, freezer cold
- Water dripping inside the fridge
- Compressor running continuously
- Er dH error code
What Causes This Fault
- Defrost heater open circuit
- Bi-metal / defrost limiter failed open
- Defrost sensor (thermistor) out of range
- Main board not energising the defrost cycle
- Broken defrost heater wiring
Our Repair Process
- 01Confirm ice build-up and thaw the evaporator
- 02Test defrost heater resistance
- 03Test bi-metal continuity when cold
- 04Check defrost sensor resistance against the LG chart
- 05Verify the main board energises the defrost circuit
- 06Replace the confirmed failed component and monitor a cycle
When to Call a Technician
Book a call-out as soon as you see frost building on the evaporator — a fully frozen coil can take hours to thaw and stresses the compressor.
Frequently Asked Questions
Why does ice keep building up in my LG fridge?
The defrost system isn't clearing the evaporator on its automatic cycle. The heater, bi-metal or sensor has failed, so frost accumulates until it blocks airflow to the fridge.
Can I just defrost it manually?
A manual defrost clears the ice temporarily, but the fault will return within days. The failed defrost component needs to be replaced for a permanent fix.