Hi all. Very helpful forum this, so thought I would register and see if anyone can help with the issue I have.
A couple of months ago we noticed that when running a bath, the water wasnt staying hot. The boiler would initially fire up, and then maybe 10 mins later,the burner goes out and the water ran cold. This was also happening with the radiators when the central heating was on.
After looking on this forum, it was mentioned that a faulty relay on the pcb may be the culprit, identifiable by scorched contacts. This was identified, replaced, and so far, the hot water has worked as it should.
However, I noticed a few days ago, that now the boiler is clicking off every so often, before the set temperature on the room thermostat is reached. However, the radiators stay piping hot this time, rather than dropping in temperature when the burner stops. its as if they are on full, too hot to touch by hand. (main boiler heat control is set to about three quarters on).
So basically, the system reaches the temperature set on the room thermostat, but the boiler clicks off quite a few times whilst getting the system up to temperature. Is this a fault, or should it burn constantly all the way up to the required room temperature?
Also a bit concerned in case its working more inefficiently than it should and burning £££££!
Had a chat with a gas engineer today and he felt maybes the thermistor or flow switch could possibly be causing this.
Where would I find the specs of these components to be able to check for faults? He also said to test them when the fault condition is present, the contacts on each sensor need to be shorted. Is that correct?
Any help greatly appreciated.
Many thanks,
Lee
A couple of months ago we noticed that when running a bath, the water wasnt staying hot. The boiler would initially fire up, and then maybe 10 mins later,the burner goes out and the water ran cold. This was also happening with the radiators when the central heating was on.
After looking on this forum, it was mentioned that a faulty relay on the pcb may be the culprit, identifiable by scorched contacts. This was identified, replaced, and so far, the hot water has worked as it should.
However, I noticed a few days ago, that now the boiler is clicking off every so often, before the set temperature on the room thermostat is reached. However, the radiators stay piping hot this time, rather than dropping in temperature when the burner stops. its as if they are on full, too hot to touch by hand. (main boiler heat control is set to about three quarters on).
So basically, the system reaches the temperature set on the room thermostat, but the boiler clicks off quite a few times whilst getting the system up to temperature. Is this a fault, or should it burn constantly all the way up to the required room temperature?
Also a bit concerned in case its working more inefficiently than it should and burning £££££!
Had a chat with a gas engineer today and he felt maybes the thermistor or flow switch could possibly be causing this.
Where would I find the specs of these components to be able to check for faults? He also said to test them when the fault condition is present, the contacts on each sensor need to be shorted. Is that correct?
Any help greatly appreciated.
Many thanks,
Lee
