Boiler problems I have an Ariston Micro Genus HE combi boiler. Whilst the heating was on it stopped working and put the A03 error message on. Pushing the system reset button does not work. I have let the boiler cool down overnight and tried again, but still nothing. Can you help
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your boiler needs a minimum gas pressure of 16 mb to light successfully. if your gas pipe has been extended it has to be able to flow enough gas. it may need upgrading to 28mm for even as little as a metre from the gas meter. if your central heating works ok when the fire is off then this is your problem
odd noise like popping or singeing fire....clicking noises.....sounds like you have a water leak putting out the pilot.......or your thermo coupling is bad....or the noise is the tank full of calcium buildup and that will make noises when the burner is on
Check the heat exchanger. Often they and gummed up.& you will have to try & flush it out or replace. If this model has the cylindrical type, they are pigs to do. If this machine is 10 yrs old or more, you might find it better in the long run to have a new boiler Just a thought, but I assume that the valves on the 3/4 " central heating pipes are turned on Parts to look forward to later - fan £80 - pump £65 - heat exchanger £110 - diverter valve £65 - pressure relief valve £45
turn both valves off at each side of radiator and once the pressure balances it will stop leaking, there is no solution to this whilst using this as a radiator to heat the space, but will stop the leak.