S.96 Medium
Your boiler has detected an issue with the sensor that monitors water returning from your radiators, which may stop it from heating efficiently or starting up.
Technical description: Return sensor error
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 S.96 — no call-out fees, no surprises.
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Parts commonly replaced
- Return NTC thermistor (sensor)
- Sensor wiring harness
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