by greengrass »
Wed Feb 13, 2008 5:58 pm
Red Grundfoss hot water circulation pump not working.
Bungalow: hot water system comprise hot water storage tank in airing cupboard in shower room, next door is the bathroom and those hot taps work fine even though pump not working. The circulation to the kitchen tap is something to be desired as it takes so long before hot reaches the tap.
Q: Do these pumps work on the principal of a built in 'flow switch' that operates the pump when a hot tap is turned on?
If this is so I would expect that the power feed cable to be permanently
'Live' and it isn't.
It has been checked with a reliable tester and his equipment , he is an electrical test technician mate who checks industrial elecs as well as domestic all his testers give same reading zilch power on the pumps cable.
This has been on going for some time and it's about time it was sorted but I've had some horrendous estimates, one £200 'as it needs new pump' he said, so have decided to ask for advice before calling in the big boys, or girls [I'm not *******], who know to fix it. Any advice would be welcome other than proverbials.