Display shows E9 and the unit does not cool despite fans running; compressor may not start.
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.
Possible Causes
How to Fix / Troubleshooting
Critical safety note: Refrigerant system repairs require specialized tools and must be performed by an F-gas certified refrigeration technician. Do not attempt to open the sealed system yourself.
- Basic checks: Confirm the unit is properly powered, the thermostat is set to a cold setting, and doors are fully closed.
- Listen and feel: When powered, check if the compressor vibrates or warms up. A cold, silent compressor while fans run suggests it is not being energized or is internally failed.
- Inspect for obvious leaks: Look for oily residue on copper lines, around the compressor, or at brazed joints. Oil stains often accompany refrigerant leaks.
- Check condenser temperature: If the compressor runs but the condenser stays cool, there may be a severe loss of refrigerant or internal compressor failure.
- Control board check: Verify that the compressor output connector on the main PCB is firmly seated and shows no burn marks. If you have electrical skills, you can test for voltage at the compressor terminals when it should be running (extreme caution, live mains).
- When to call a professional: If E9 persists and basic electrical checks do not reveal a simple control issue, contact a qualified Blastcool service agent. They can check system pressures, locate leaks, and recharge or replace the compressor as needed.
Do not attempt to top up refrigerant yourself; incorrect handling can damage the system and is often illegal without certification.