Indoor unit shows E14; unit may not start or stops randomly

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

Corrupted firmware on indoor PCB, Faulty EEPROM chip, Voltage spikes damaging memory, Incorrect replacement PCB not programmed for this Baxi model

Safety: Disconnect power before touching the PCB.

Steps:

1. Power reset: Turn off power for 10 minutes, then restore. Sometimes transient memory errors clear after a full reset.
2. Check PCB part number: If the indoor PCB was recently replaced, verify it matches the exact Baxi model and capacity.
3. Surge protection: If E14 occurs after storms or power issues, consider installing a surge protector on the supply.

Action: Persistent E14 usually requires replacement or reprogramming of the indoor PCB by an authorized Baxi service center.

Professional Required 5/5

Indoor Main PCB

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