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Answered in 6 hours by:
12/23/2013
Andrew Smith, Engineer
Category: UK Plumbing
Satisfied Customers: 4,029
Experience: Domestic Gas, Commercial Gas, LPG, Unvented Hot Water, Part P Electrical, Commercial Catering
VerifiedHi my name is Andrew - lets see if we can get you sorted in the shortest possible time.
A3 fault code is for an overheating problem. This could be the overheat thermostat tripping too low (and needs replacing) or the boiler is actually overheating and you have a problem with circulation or temperature control.
Does this happen at a particular time - when hot water or heating is on?
The leak will probably just need tightening up if you are not losing system pressure.
A3 fault code is for an overheating problem. This could be the overheat thermostat tripping too low (and needs replacing) or the boiler is actually overheating and you have a problem with circulation or temperature control.
Does this happen at a particular time - when hot water or heating is on?
The leak will probably just need tightening up if you are not losing system pressure.
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