****I have changed the thread name to assist future searches by people suffering similar problems.******
We had a new central heating system and Worcester Combi boiler fitted by BG in 2009.
It runs on a remote thermostat with a receiver in the cupboard where the boiler is located.
However, Just lately, the central heating has not kicked in when the thermostat notes the temperature has dropped to the point where the heating should be activated. The thermostat shows the signal requesting heat is being sent, and the receiver flashes and lights up green showing 'on' but no heat comes through the radiators.
The remedy this, it was a case of turning the thermostat down, to below a temperature that requested heat, leave it a minute, then switch it right up and the boiler would usually fire after one or two attempts.
Not ideal, especially at night, when it's quite chilly at the moment, as it means I have to increase the original temperature up a few degrees, so when it fails in the night, it doesn't drop too low. Had it been just me, I would suffer it, but 2 kids under 6 means warmth is pretty much a priority.
However, a week or so ago, this method started failing, and the only way to get it to fire would be to switch the receiver off, leave it a minute, then switch it on again, re-pair the thermostat to the receiver and again 'magic' heat.
This led me to believe there is an intermitant fault between the thermostat and receiver, as the fault only usually happened at night, and manual adjustment of the thermostat wasn't a problem.
However, the problem is deteriorating. The last few nights it’s hasn’t fired up (same as always) but getting harder and harder to re set.
The tried and tested methods of switching off the receiver a few times, or dropping the temperature setting on the thermostat then increasing it to max have stopped working.
The only way to fire it up now is to run the hot water for a minute or 2, then when the boiler switches off from heating the tap water, it switches over to the radiators.
Tested the theory a couple of times, when I was in the bath, I ran some more hot water, and the rads switched off, when I stopped the running water, the rads kicked back on again. I can tell they are kicking on, as there is always a creak of pipes underneath the landing floorboards when the radiators kick in, and the boiler sounds very slightly different.
This now leads me to believe there is no problem with the thermostat or receiver, but a problem with the boiler.
Any ideas, as I can’t get my head around that the radiators won’t fire unless the hot water has been running, but was fixed previously by a simple thermostat adjustment.
Strange thing is, we don't seem to suffer any problems during the day.
We had a new central heating system and Worcester Combi boiler fitted by BG in 2009.
It runs on a remote thermostat with a receiver in the cupboard where the boiler is located.
However, Just lately, the central heating has not kicked in when the thermostat notes the temperature has dropped to the point where the heating should be activated. The thermostat shows the signal requesting heat is being sent, and the receiver flashes and lights up green showing 'on' but no heat comes through the radiators.
The remedy this, it was a case of turning the thermostat down, to below a temperature that requested heat, leave it a minute, then switch it right up and the boiler would usually fire after one or two attempts.
Not ideal, especially at night, when it's quite chilly at the moment, as it means I have to increase the original temperature up a few degrees, so when it fails in the night, it doesn't drop too low. Had it been just me, I would suffer it, but 2 kids under 6 means warmth is pretty much a priority.
However, a week or so ago, this method started failing, and the only way to get it to fire would be to switch the receiver off, leave it a minute, then switch it on again, re-pair the thermostat to the receiver and again 'magic' heat.
This led me to believe there is an intermitant fault between the thermostat and receiver, as the fault only usually happened at night, and manual adjustment of the thermostat wasn't a problem.
However, the problem is deteriorating. The last few nights it’s hasn’t fired up (same as always) but getting harder and harder to re set.
The tried and tested methods of switching off the receiver a few times, or dropping the temperature setting on the thermostat then increasing it to max have stopped working.
The only way to fire it up now is to run the hot water for a minute or 2, then when the boiler switches off from heating the tap water, it switches over to the radiators.
Tested the theory a couple of times, when I was in the bath, I ran some more hot water, and the rads switched off, when I stopped the running water, the rads kicked back on again. I can tell they are kicking on, as there is always a creak of pipes underneath the landing floorboards when the radiators kick in, and the boiler sounds very slightly different.
This now leads me to believe there is no problem with the thermostat or receiver, but a problem with the boiler.
Any ideas, as I can’t get my head around that the radiators won’t fire unless the hot water has been running, but was fixed previously by a simple thermostat adjustment.
Strange thing is, we don't seem to suffer any problems during the day.