Stopped working a few weeks ago. Diagnosed Air Pressure Switch issue.
New fitted (genuine part) and worked for approx a week then failed. Assumed faulty part - replaced with new air pressure switch. Worked for approx 3 weeks- then failed again
Boiler fires up when first switched on. Fires for a few minutes then dies. Fan runs on but will not relight.
Has anyone got any ideas what the problem may be/come across similar issue?
The fan was replaced Jan this year and working fine.
air pressure low within expansion tank put a bike pump on it get to about one bar of pressure, if its really old boiler could be the rubber bladder in the tank ruptured ? you can fit an expansion tank out in line any where in the system! it will fix this issue.
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