E2 222 High
Your boiler has detected an electrical fault with the internal sensor that monitors the temperature of the water leaving the unit, preventing it from heating up safely.
Technical description: Flow temperature sensor shorted
Typical repair cost: £100-£180 (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 E2 222 — no call-out fees, no surprises.
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Parts commonly replaced
- Flow Temperature Sensor (NTC Thermistor)
- Wiring harness connecting to the main PCB
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