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Matt0029

Gas Engineer
Oct 6, 2017
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Heating Engineer (Has GSR)
Anyone had much experience with Vokera lineal boilers? I had a call about one that's turning off every 30 seconds then re-lighting for 30 and carrying on in this sequence no fault lights present on the boiler. Is this likely gas valve releated?
 
Common for the venturi to become blocked on this model, It starts ok on initial fire up then APS falls to off and it repeats again and again, I doubt it is the gas valve. also check the resistance on the thermistors. could well be sensing a false overheating scenario. Or it is overheating and the hex needs some attention or weak pump.
 
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