Hi All,
Heating works fine, but when DHW called for the boiler seems to stutter, like it wants to fire up but then stalls, then tries again and so on. If i reduce the flow through the DHW system by closing back on the tap the HW does eventually get hot but when i open the tap fully, water cools down. I've checked the DHW pin which operates the microsswitch no probs. Have also changed the diaphram in the DHW sensing unit despite the old one being OK. I am puzzled as to what the other pin does, the one which extends out of the top of the divertor Vv. This seems to move in and out as the boiler cuts in & out. could it be worth me changing the other diaphram? (the one in the divertor Vv).
Hope this makes some sort of sense! Any help massively appreciated guys.
Heating works fine, but when DHW called for the boiler seems to stutter, like it wants to fire up but then stalls, then tries again and so on. If i reduce the flow through the DHW system by closing back on the tap the HW does eventually get hot but when i open the tap fully, water cools down. I've checked the DHW pin which operates the microsswitch no probs. Have also changed the diaphram in the DHW sensing unit despite the old one being OK. I am puzzled as to what the other pin does, the one which extends out of the top of the divertor Vv. This seems to move in and out as the boiler cuts in & out. could it be worth me changing the other diaphram? (the one in the divertor Vv).
Hope this makes some sort of sense! Any help massively appreciated guys.
