We have a Combi 100 and it is pretty much a new boiler, over the last 2 years we have had a new pump, stats, pcb, fan, diverter valve, etc.
Triggers broom!
It has been working a treat, all 13 radiators are kicking out proper heat, the unit is silent and we are chuffed as we were going to change it last year, but turned out it was just the pump playing up and someone had fitted one that was too small.
However....... the last few days the heating has not come on in the morning and when I looked the thing had shut down, red light on. Press the button it fires up and is fine again all day and all evening, but next morning it is off again and needs resetting.
Now I presumed this would be the pump overrun not working properly, but I was up at 5am yesterday and when I walked through to turn the heating on the red trip light was not on, but as soon as I fired it up it cut out and red light was up.
So, obviously not cutting out when it switches off so not the pump overrun.
My heating comes on at 7am till 9am and then again at midday for 2 hours and then again at 5pm ready for when we get home until midnight.
That all works fine, once I have reset it at 7am, the rest of the day is not a problem.
We also have a room 'stat as well, so the thing turns on and off around 15-20 times a day at a guess.
Yesterday we were out all day and the heating turns off at 9am on a Sunday and doesnt kick back in until 5pm, I was expecting to walk in at 9pm to a cold house, but it was all running a treat.
So then hoped that this morning it would be running, but no, it had tripped out again and needed resetting.
The only logical thing is something is getting stuck but only when cold, but what?
Obviously an ignition issue I would guess, but how do I try and work at what?
Many thanks in advance.
Triggers broom!
It has been working a treat, all 13 radiators are kicking out proper heat, the unit is silent and we are chuffed as we were going to change it last year, but turned out it was just the pump playing up and someone had fitted one that was too small.
However....... the last few days the heating has not come on in the morning and when I looked the thing had shut down, red light on. Press the button it fires up and is fine again all day and all evening, but next morning it is off again and needs resetting.
Now I presumed this would be the pump overrun not working properly, but I was up at 5am yesterday and when I walked through to turn the heating on the red trip light was not on, but as soon as I fired it up it cut out and red light was up.
So, obviously not cutting out when it switches off so not the pump overrun.
My heating comes on at 7am till 9am and then again at midday for 2 hours and then again at 5pm ready for when we get home until midnight.
That all works fine, once I have reset it at 7am, the rest of the day is not a problem.
We also have a room 'stat as well, so the thing turns on and off around 15-20 times a day at a guess.
Yesterday we were out all day and the heating turns off at 9am on a Sunday and doesnt kick back in until 5pm, I was expecting to walk in at 9pm to a cold house, but it was all running a treat.
So then hoped that this morning it would be running, but no, it had tripped out again and needed resetting.
The only logical thing is something is getting stuck but only when cold, but what?
Obviously an ignition issue I would guess, but how do I try and work at what?
Many thanks in advance.
