202 Medium
Your boiler has lost communication with the external temperature sensor, which helps it adjust your heating based on the weather outside.
Technical description: Clas HE evoClas he evo systemE-combi evoE-system evo
Typical repair cost: £90-180 (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 202 — no call-out fees, no surprises.
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Parts commonly replaced
- External Temperature Sensor
- Outdoor Sensor Wiring
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