Er
Phiestina
Generic Control System Error
Display shows Er or generic error and the unit may not respond to controls.
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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
Temporary firmware glitch, Loose harness connection, Failing main control board, Incorrect voltage supply
How to Fix / Troubleshooting
Safety first: Unplug the cooler before inspecting internal components.
- Power reset: Disconnect power for 10–15 minutes, then plug back in. Many transient errors clear after a full reset.
- Check outlet and voltage: Ensure the cooler is plugged into a properly grounded outlet with correct voltage (typically 115V AC in North America). Avoid extension cords.
- Inspect harness connections: Remove the rear panel and verify that all connectors on the main control board are fully seated and keyed correctly.
- Look for moisture or corrosion: Check for signs of water intrusion around the control board area. Dry thoroughly if found and correct any source of leaks.
- Replace main control board if persistent: If the Er code returns immediately after reset and wiring is sound, replace the "Phiestina main control board".
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Repair Difficulty
Medium
3/5
Required Part
Main Control Board
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