can anybody explain why the flow switch spindle fails to come out far enough to reach the micro-switch,i have cleaned the spindle and check the diaphram and all is ok,pump runs ok and system pressure is 1.5bar,i would be very greatful for any help,thank you,wes.
baxi system 35/60
- Thread starter athygas
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thanks baxpoti,i will try that,i would of thought that if the diaphagm wasnt bursted that it would be ok,what other faults can happen with a diaphragm and why would it stop the spindle from moving out far enough? ive came across this problem a good few times with this boiler have you?
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A blocked heat ex will give this fault as well
it could be stretched
Can't really see why a stretched diaphragm would matter on this one
Was this a question or an observation?:
With reduced flow through the rads, you'll get more pressure from the pump across the switch, so perhaps the pump is knack'd.
Blocked hex would reduce the flow by dropping thre pressure across the boiler, so yes that would make sense too.
Take a capacitor out of an old working pump, and hold it on the terminals of the one that's fitted - see if the pump speed increases.
Was this a question or an observation?:
With reduced flow through the rads, you'll get more pressure from the pump across the switch, so perhaps the pump is knack'd.
Blocked hex would reduce the flow by dropping thre pressure across the boiler, so yes that would make sense too.
Take a capacitor out of an old working pump, and hold it on the terminals of the one that's fitted - see if the pump speed increases.
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