Potterton Puma 80 permanent pilot. The boiler is cutting out after several minuters of CHW demand. The boiler is firing up and the CH flow pipe is very hot. Also the rads are heating up nicely. The Pump and fan are OK. I have a new flow switch and CH overheating thermostat. The DHW is OK. There are no unusual sounds. Can any one suggest a solution?
Puma 80 permanent pilot CHW not working
- Thread starter pennib
- Start date
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Thanks for your reply,
How do I check the pump? I have done the ear to a screw driver to pump thing, and it sounds like its whirling round OK. I have also loosened the central lock nut on the front of the pump, and turned the spindle by hand and the spindle turns freely. I have now tested the boiler again, and i've noticed that the pressure gauge climbs into the red at bar 4. Then the system shuts down. Does this mean the pump is not turning despite the rads getting hot? Could it be the 'central heating water temperature sensor'?
How do I check the pump? I have done the ear to a screw driver to pump thing, and it sounds like its whirling round OK. I have also loosened the central lock nut on the front of the pump, and turned the spindle by hand and the spindle turns freely. I have now tested the boiler again, and i've noticed that the pressure gauge climbs into the red at bar 4. Then the system shuts down. Does this mean the pump is not turning despite the rads getting hot? Could it be the 'central heating water temperature sensor'?
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