H.02 – .06 High
Your boiler has detected that the water pressure is too low for it to operate safely, likely due to a small leak or air in the system.
Technical description: Temporary error caused by system water pressure, water leak on boiler, water leak on system.
Typical repair cost: £0-120 (including labour)
DIY fix possible
Locate the filling loop (braided silver hose) underneath your boiler.Slowly open the valve(s) until you hear water entering the system.Watch the pressure gauge and close the valves once it reaches between 1.0 and 1.5 bar.
Protect yourself from future repair bills
A boiler cover plan would cover faults like H.02 – .06 — no call-out fees, no surprises.
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Parts commonly replaced
- Filling loop
- Pressure sensor
- Automatic air vent
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