The Nest E has been installed and working fine for 2 years now.
I have a worcester 32CDI Combi
The last day or so, the boiler hasn't been firing up on schedule, so i have investigated and this is what happens;
When I click the thermostat up to 19deg's or when it starts the schedule, you hear a click in the link e and the boiler flame icon is displayed on the lcd panel. This stays displayed for a matter of approx 15-20 seconds and goes away. I hear the boiler running and then after a few minutes it shuts down.
I thought I would put the boiler into engineer mode (man with ladder) , this then displays the flame icon and the boiler fires and works, not only for the prescribed diagnostic time, but then continues with schedule (I assume) until it switches off at the end of schedule.
So, in summary, the boiler appears to work and the link E triggers a start (for about 20 seconds) so what could the problem be.
I was wondering, does the link E have to trigger the call to heat for a while and it simply isn't doing it? Or is the boiler part no accepting a call to heat?
Any direction would be good.
Could you please let me know if the Auto-Schedule is off or on? If it's on, let's turn it off for the moment. You can do this by going to:
1. In the Nest app:
2. On your thermostat:
Settings > Nest Sense > Auto-Schedule Off.
If it was on, it might have interfered with your current schedule. With Auto-Schedule, your Nest thermostat learns what temperatures you like at different times of the day. After a few days of learning, your thermostat will prepare a schedule for you. But in that case, with the Auto-Schedule being off, it's not applicable. Could you please let me know when the heating turns off if the screen is still orange or it changes to black?
Hi, I am back. I had a chat with my colleagues and they advised a few things to try and check.
1. Were the Heat Link batteries ever replaced at any point? If they were, were they replaced with the same batteries it came with originally?
2. Has any maintenance work been done on the boiler before this behavior occurred?
3. Were any other changes done to the boiler settings, such as maximum flow temperature or anything else?
4. Try manual mode, pressing the button on the Heat Link 2 times so the green wavy symbol LED comes on again. Once it is on wait for a few minutes and check if the thermostat display says "Manual" on it still and if that green symbol still stays on the Heat Link. You may need to press the button on the Heat Link once for it to turn the LEDs back on to check, as they go off to save battery.