E15
Baxi
Indoor Power Supply / Low Voltage Error
Indoor unit shows E15; unit may not respond to remote or may shut down unexpectedly
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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
Low mains voltage, Faulty indoor PCB power supply section, Loose neutral or live connection, Overloaded circuit sharing with other appliances
How to Fix / Troubleshooting
Safety: Work with mains wiring only if you are competent. Otherwise, call an electrician.
Steps:
- 1. Check supply: Ensure the dedicated circuit breaker for the Baxi air conditioner is ON and not tripping.
- 2. Inspect terminals: With power off, check the indoor unit's terminal block for loose screws or signs of overheating.
- 3. Avoid shared circuits: Large Baxi units should be on a dedicated circuit. Remove other heavy loads from the same circuit if possible.
- 4. Measure voltage: A technician should measure supply voltage and the indoor PCB low-voltage outputs. If the PCB power supply is unstable, replace the indoor PCB.
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Repair Difficulty
Hard
4/5
Required Part
Indoor Main PCB
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