Blastcool
Defrost System Failure
Excessive frost or ice buildup on the evaporator and rear interior wall.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Failed defrost heater, Faulty defrost sensor, Defective defrost control on PCB, Door gasket leak allowing moist air in
How to Fix / Troubleshooting
Safety: Unplug the cooler before defrosting or accessing internal components.
- Manual defrost: Turn off the unit and leave the door open to melt ice. Place towels to absorb water. Do not use sharp tools to chip ice.
- Inspect door gasket: Replace a damaged Blastcool door gasket to prevent moist air ingress.
- Test defrost heater and sensor: Access the evaporator, test heater continuity and sensor resistance (see E4). Replace faulty defrost heater or defrost sensor.
- Check drain: Ensure the condensate drain is clear so meltwater can exit properly.
If frost returns quickly after these repairs, the defrost control logic on the main PCB may be faulty and should be replaced by a technician.
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Repair Difficulty
Hard
4/5
Required Part
Defrost Heater
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