H.02 – .04 High
Your boiler's computer brain is momentarily confused by some internal settings and cannot operate correctly.
Technical description: Temporary error- parameter fault. Incorrect parameters.
Typical repair cost: £90-280 (including labour)
DIY fix possible
Locate the selector knob on the front of the boiler control panel.Turn the knob to the 'Reset' position and hold it for five seconds.Return the knob to your desired setting and wait for the boiler to restart.
Protect yourself from future repair bills
A boiler cover plan would cover faults like H.02 – .04 — no call-out fees, no surprises.
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Parts commonly replaced
- Printed Circuit Board (PCB)
- Parameter chip
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