Ariston clas he 30 problem

[Furgo]

Hi guys. I'm stuck here.5 year old boiler serviced every year not by me. Boiler is saying 504 - flame lift off after 3 attempts then lock out. First checked & cleaned sparker and detection probes still same fault. Done working pressure at meter and inlet at gas valve no problems there, flue is fine. I thought rectification fault so it's the pcb as leads look fine. I put my fingers into the air intake/ silencer before the gas valve and reduced the intake of air and it lit 1st time and stayed lit on both heating and hot water. No flame lift off or dropping out after 20 times this has caused me to disprove the rectification fault in the pcb. Two Ariston techs are adamant it's the board any ideas I've got a gut feeling that it's not the pcb as I can get it running but only if I retard the air inlet. Any ideas or insight would be grateful thanks Iain

 

[Dotty]

We cannot and will not give advice on the installation or repair of boilers, cookers or ANY gas appliances for your own safety.

Please go to Gas Safe Register | Ensure your gas engineer is registered. or post a thread in the 'I'm looking for a plumber / gas engineer' section of these forums remembering to include your location. [DLMURL="http://www.ukplumbersforums.co.uk/im-looking-plumber-gas-engineer/"]I'm looking for a Plumber or Gas Engineer[/DLMURL]

If you are gsr please increase your post count to 10+ then send a PM (Private Message) with your gsr details to either Gas man - View Profile: gas man - Plumbing Forum | Plumbing Advice | Plumbers Forums | A forum for plumbers advice in the UK or Redsaw - View Profile: REDSAW - Plumbing Forum | Plumbing Advice | Plumbers Forums | A forum for plumbers advice in the UK who will check you and then give you access to the gsr private forum.

Providing gas-related advice to anybody who should not be touching gas and cannot prove their competence is unacceptable. We will take whatever action we deem appropriate to prevent such advice being given


Thank you.

UKPF TA's, Mods and Admin teams.

[DLMURL="http://www.co-gassafety.co.uk/deaths.html"]CO Gas Safety[/DLMURL]

http://www.ukplumbersforums.co.uk/central-heating-forum/42241-notice-gas-safety-related-advice.html