- Joined
- 5 Apr 2006
- Messages
- 1,076
- Reaction score
- 11
- Country

I would imagine the circulating pump is having a bad day.....just becase it may be humming (or whatever) doesn't mean to say that its actually pumping.
You bleed these things by removing the chrome screw in the middle, and then its possible to get a small screwdriver in the hole to check that the impeller inside is spinning briskly.
John![]()
just because the shaft is turning doesn't mean that the pump is working. The impeller can shear off (ceramic) shafts
The OP needs to hold the pipe and feel the water flowing or not
Could it be the diverter valve not opening or something like that ?
Isn't there some common fault with the overflow pipe to the jockey tank getting blocked and causing a problem?