E2 223 High
Your boiler has lost connection with a internal sensor that monitors water temperature, meaning it cannot safely heat your home until the connection is restored.
Technical description: The flow temperature sensor contacts have been interrupted
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 E2 223 — no call-out fees, no surprises.
*Affiliate links — we may earn a commission at no extra cost to you. Prices shown are starting prices.
Parts commonly replaced
- Flow temperature sensor (NTC thermistor)
- Wiring harness connector
*Affiliate links — we may earn a commission at no extra cost to you.