61 High
Your boiler has detected trapped air or a blockage that is stopping water from flowing through your heating system correctly.
Technical description: Air in the pump (restricted central heating flow)
Typical repair cost: £80-180 (including labour)
DIY fix possible
Check that your boiler pressure is between 1.0 and 1.5 barBleed your radiators using a radiator key to remove trapped airEnsure all radiator valves and isolation valves under the boiler are fully openReset the boiler using the selector switch
Protect yourself from future repair bills
A boiler cover plan would cover faults like 61 — no call-out fees, no surprises.
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Parts commonly replaced
- Automatic Air Vent (AAV)
- Circulation Pump
- Central Heating Filter
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