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Hello,
Im in the process of replacing honeywell sundial rf2 (DT92E & ST429C ) to Nest V3 S Plan.
Ive successful ( i think) wired up the nest link correctly.
N to N
L to L
Jumper from live to 2 then 2 to 5
Heating into 3
Water into 6
E to E
The nest thermostat is up and running looking nice and pretty but......
When i call for heat, my worcester bosch fires up, the temp goes up a 5 to 10 degrees, then the heat stops and drops but the boiler still keeps running / blue light of the worcester bosch stays on.
The app and thermostat turn the boiler on and off, but as before no heat.
Same with the water.
I looked at the wiring diagram and numerous pics on this site but, i just cant figure out what's wrong. Ive trawled this site to no gain.
Any thoughts or advice would be greatly appreciated. If you require further pics or info please let me know.
Regards
Craig
Im in the process of replacing honeywell sundial rf2 (DT92E & ST429C ) to Nest V3 S Plan.
Ive successful ( i think) wired up the nest link correctly.
N to N
L to L
Jumper from live to 2 then 2 to 5
Heating into 3
Water into 6
E to E
The nest thermostat is up and running looking nice and pretty but......
When i call for heat, my worcester bosch fires up, the temp goes up a 5 to 10 degrees, then the heat stops and drops but the boiler still keeps running / blue light of the worcester bosch stays on.
The app and thermostat turn the boiler on and off, but as before no heat.
Same with the water.
I looked at the wiring diagram and numerous pics on this site but, i just cant figure out what's wrong. Ive trawled this site to no gain.
Any thoughts or advice would be greatly appreciated. If you require further pics or info please let me know.
Regards
Craig
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