Baxi No Power to Indoor Unit

Baxi air conditioner does not turn on at all; no lights or display

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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

Tripped circuit breaker, Blown internal fuse on indoor PCB, Loose live/neutral connection at terminal block, Faulty indoor main PCB power supply

How to Fix / Troubleshooting

Safety: Turn off the main breaker before opening any covers.

Steps:

  • 1. Check breaker and isolator: Ensure the dedicated breaker and any wall isolator for the Baxi unit are ON and not tripped.
  • 2. Verify outlet (if portable/console type): Plug another appliance into the same outlet to confirm power is present.
  • 3. Inspect indoor terminal block: Remove the indoor front cover and check that all terminal screws are tight and wires are secure.
  • 4. Internal fuse: Many Baxi indoor PCBs have a small glass or cartridge fuse. If visibly blown, replace with the same rating. If it blows again, the PCB likely has a short and needs replacement.

When to call a technician: If power is present but the unit remains dead, the indoor PCB power supply is probably faulty.

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Repair Difficulty

Medium 3/5

Required Part

Indoor Main PCB
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