F.72 High
Your boiler has detected that its flow and return sensors are providing conflicting readings, which prevents it from heating your home safely.
Technical description: Deviation in the water pressure sensor/return temperature sensor
Typical repair cost: £120-240 (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.72 — no call-out fees, no surprises.
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Parts commonly replaced
- NTC Temperature Sensor
- Water Pressure Sensor
- Wiring Harness
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