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high limit stat thermocouple and pcb board are getting replaced :o

thanks for your reply will get service eng back to redue boiler do they have to drain system when cleaning exchanger and flue :|

thanks again for your reply will get that done once more but is this the case about this type of back boiler douse this happen ie thermostat or board a smoke test was done on flue and fire and was told not to use boiler as it was not working as it should be but to use the fire was ok.

thanks for that( the boiler has been hooverd by a competant heating eng) hot water is working but not as hot as used to be but the problem remains been told these boilers are a night mare that this could be the stat or circut board as the board is bad location on boiler and could be damaged...

poterton back boiler (housewarmer ) the heating keeps going off the fire is working ok no problems . got it going again by hovering out all the gubings in boiler but still it keeps going out could someone tell me ether a circut board or thermostat the boiler works on and off ie goes on for 1...

poterton back boiler not working proper fire working but no heating slight smell of burning heating was working fine up till last week :?