Heater displays E13 and refuses to start; may be associated with incorrect wiring or supply.

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

Missing phase on three-phase supply, Incorrect phase rotation, Loose terminal connection in Fairland power block, Blown upstream breaker or fuse on one phase

How to Fix / Troubleshooting

Safety: Three-phase power is hazardous. Only a qualified electrician should work on the supply wiring.

User-level checks:

Check breakers: Verify that all breakers feeding the Fairland heater are ON and not tripped.
Do not swap wires yourself if you are not trained.

Electrician tasks:

Measure all three phases at the heater’s terminal block for correct voltage and balance.
Correct any phase loss or phase reversal and tighten all terminals.

Repair Difficulty

Hard 4/5

Required Part

Power Terminal Block / Phase Protection Circuit

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