0E33 High
Your boiler is not receiving enough electrical power from the mains supply to operate safely and has shut down as a precaution.
Technical description: Low power supply voltage
Typical repair cost: £100-350 (including labour)
DIY fix possible
Check if other appliances in your home are struggling or if there is a local power cutEnsure the boiler's electrical fused spur switch is fully turned onReset the boiler by turning the selector switch to the 'R' position for 5 seconds
Protect yourself from future repair bills
A boiler cover plan would cover faults like 0E33 — no call-out fees, no surprises.
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Parts commonly replaced
- Printed Circuit Board (PCB)
- External Voltage Stabiliser
- Electrical Wiring
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