E50 Medium
Your boiler is having trouble measuring the temperature of your hot water, which usually means it won't be able to provide reliable hot water to your taps.
Technical description: Domestic hot water (DHW) negative temperature coefficient (NTC) thermostat sensor fault (tank boiler) (s.c.) or DHW NTC sensor fault (tank boiler) (o.c.).
Typical repair cost: £90-160 (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 E50 — no call-out fees, no surprises.
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Parts commonly replaced
- DHW NTC thermistor sensor
- Wiring harness
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