2 red flashes High
Your boiler has become too hot and has shut itself down as a safety precaution to prevent damage.
Technical description: Boiler overheat tripped
Typical repair cost: £100-£350 (including labour)
DIY fix possible
Check that your radiator valves are open and not turned to zero.Ensure your system water pressure is between 1 and 1.5 bar on the gauge.Turn the selector switch to the reset position for five seconds and then back to 'onn'.
Protect yourself from future repair bills
A boiler cover plan would cover faults like 2 red flashes — no call-out fees, no surprises.
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Parts commonly replaced
- Overheat Thermostat
- Circulating Pump
- Main Heat Exchanger (Flushing)
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