Hi everyone
We are having a problem with our heating. I'm not sure if its an air in the system or new controller issue....or something completely different.
The two changes to the system since it was turned off in the summer (when it worked fine) is the replacement of a leaking pressure reducing valve which connects to the unvented cylinder. We've had no issues with getting hot water since it was replaced -but not sure if air could have got into the heating system at that time?
We also lost (or the kids have hidden!) the wireless controller for the heating control only - hot water is a hard wired controller. It was a Honeywell controller (cant remember which model) which talked to the R6660D receiver. We replaced it with a Honeywell CM927 which I was told was compatible - and it seems to be in that it 'paired' ok and does switch the heating on when it is supposed to. I changed some installer settings in it to allow for our oil boiler, as per an installer manual.
The problem is that the heating is set to 18 degrees but we cant seem to get much past 14. The boiler is firing up ok and radiators getting quite warm but not hot. The boiler switches itself off although the flame icon on the controller is still showing as its not reached temperature. When the boiler switches itself off it is not on lock out. And it does come on again in a little while, and so on.
Husband has spent hours bleeding rads - water coming off them but he says he can still hear 'hissing' of air from one, despite draining pots and pots of water off. We have also bled the boiler once.
Is it a case of persevering with the bleeding or could it be something else.
Hope all the above makes sense. Really appreciate any advice - thanks for taking the time to read.
We are having a problem with our heating. I'm not sure if its an air in the system or new controller issue....or something completely different.
The two changes to the system since it was turned off in the summer (when it worked fine) is the replacement of a leaking pressure reducing valve which connects to the unvented cylinder. We've had no issues with getting hot water since it was replaced -but not sure if air could have got into the heating system at that time?
We also lost (or the kids have hidden!) the wireless controller for the heating control only - hot water is a hard wired controller. It was a Honeywell controller (cant remember which model) which talked to the R6660D receiver. We replaced it with a Honeywell CM927 which I was told was compatible - and it seems to be in that it 'paired' ok and does switch the heating on when it is supposed to. I changed some installer settings in it to allow for our oil boiler, as per an installer manual.
The problem is that the heating is set to 18 degrees but we cant seem to get much past 14. The boiler is firing up ok and radiators getting quite warm but not hot. The boiler switches itself off although the flame icon on the controller is still showing as its not reached temperature. When the boiler switches itself off it is not on lock out. And it does come on again in a little while, and so on.
Husband has spent hours bleeding rads - water coming off them but he says he can still hear 'hissing' of air from one, despite draining pots and pots of water off. We have also bled the boiler once.
Is it a case of persevering with the bleeding or could it be something else.
Hope all the above makes sense. Really appreciate any advice - thanks for taking the time to read.