Hi (and a Happy New Year to one and all),
I'm hoping somebody can give us some advice to try and resolve our issue once and for all. We have a Potterton Suprima 80 boiler. That has been problematic in the past and has a new PCB twice. The hot water cylinder also has had a new PCB. These have helped with various issues and generally things are better but a problem remains. I should also point out that we have a service contract with British Gas. We haven't contacted them for some time as we've only recently started using the heating again over the Winter and it's only then does the problem arise. The actuator has also been replaced.
The current situation is that the heating will sometimes stick on. What I have observed is as follows:
- when we didn't have the heating on most of last year there is no problem. water heats up as and when necessary and heating does not come on
- when we have heating on it regualtes itself and goes on and off as per the Drayton thermostat settings
- when the heating is on (and I mean the boiler is actually fired up and supplying heating) and somebody say runs a bath or has a shower I assume the hot water cylinder calls for more hot water. This is when the problem occurs. The heating will stick on at this point and if left for long enough the temperature will rise to 22C or higher even if the thermostat may be at 20 or 19 or whatever. When I notice this I can switch off the mains power to the boiler and leave for a bit and then switch back on
I am no expert on this stuff but would really really liked it resolved properly. Does this seem likely to be an electrical issue with the valve when it is in the Mid position? Or could it be something like sludge or gunk causing the valve to stick when it is in the Mid position?
It seems likely to be one of these two things to me but I'm sure I could be wrong and there may be something else going on.
Anyone? Help much apprecaited.
I'm hoping somebody can give us some advice to try and resolve our issue once and for all. We have a Potterton Suprima 80 boiler. That has been problematic in the past and has a new PCB twice. The hot water cylinder also has had a new PCB. These have helped with various issues and generally things are better but a problem remains. I should also point out that we have a service contract with British Gas. We haven't contacted them for some time as we've only recently started using the heating again over the Winter and it's only then does the problem arise. The actuator has also been replaced.
The current situation is that the heating will sometimes stick on. What I have observed is as follows:
- when we didn't have the heating on most of last year there is no problem. water heats up as and when necessary and heating does not come on
- when we have heating on it regualtes itself and goes on and off as per the Drayton thermostat settings
- when the heating is on (and I mean the boiler is actually fired up and supplying heating) and somebody say runs a bath or has a shower I assume the hot water cylinder calls for more hot water. This is when the problem occurs. The heating will stick on at this point and if left for long enough the temperature will rise to 22C or higher even if the thermostat may be at 20 or 19 or whatever. When I notice this I can switch off the mains power to the boiler and leave for a bit and then switch back on
I am no expert on this stuff but would really really liked it resolved properly. Does this seem likely to be an electrical issue with the valve when it is in the Mid position? Or could it be something like sludge or gunk causing the valve to stick when it is in the Mid position?
It seems likely to be one of these two things to me but I'm sure I could be wrong and there may be something else going on.
Anyone? Help much apprecaited.
