EE3 High
Your boiler has stopped working because it has lost the electrical connection to its temperature sensor.
Technical description: Open circuit between PCB terminals 23-24
Typical repair cost: £120-220 (including labour)
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Protect yourself from future repair bills
A boiler cover plan would cover faults like EE3 — no call-out fees, no surprises.
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Parts commonly replaced
- Flow Thermistor
- Wiring Harness
- Main PCB
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