F.13 Medium
Your boiler has detected a technical fault with the sensor that monitors the temperature of your hot water tank, meaning it cannot heat your water accurately.
Technical description: Domestic hot water cylinder temperature sensor short circuit
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 F.13 — no call-out fees, no surprises.
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Parts commonly replaced
- Domestic hot water cylinder NTC sensor
- Wiring harness
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