201 Medium
Your boiler's hot water sensor has stopped working correctly, meaning your taps might not deliver hot water as expected.
Technical description: Domestic hot water (DHW) probe damaged
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 201 — no call-out fees, no surprises.
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Parts commonly replaced
- DHW NTC Sensor (Thermistor)
- Wiring harness connecting the sensor
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