Drayton SCR failure

[sunil1234]

Hi

We have a drayton +rf3 wireless set up. Have woken up this morning to a colder house as the heating hasnt come on.

Looking at the thermostat, looks ok with flame on but no lights on SCR - not even a red one. Tried hitting override button and the unit buzzed loudly and green light came on for about 3 seconds and then went off!


Presume the scr is shot?

If i remove the 3 core wiring to the scr will this enable the previous honeywell controller to work the heating again in the interim? (still controls hot water)

TIA

 

[bengasman]

Why on earth did you change the honeywell for a drayont?
If the old one is still ok, you should be able to swap them, but make sure you do it safely as you are working on 230V.

 

[sunil1234]

lol thanks

sorry the honeywell is just a timer and the drayton was added as a thermostat & more timer options so the drayton scr just takes over the heating part with the honeywell set to "cont"

am i better off doing this instead?

http://www.howtomendit.com/answers.php?id=370311

thanks

 

[bengasman]

am i better off doing this instead?

http://www.howtomendit.com/answers.php?id=370311

thanks

Most certainly not. Changing wires when you are not absolutely sure what goes where is a bad idea.

 

[sunil1234]

ok thanks, so i should just remove the additional wiring for the scr then to allow the honeywell to take full control?

what is a god make of wireless thermostat to replace the drayton please?

 

[Whitespirit66]

http://www.plumbnation.co.uk/site/honeywell-dt92e-wireless-digital-room-thermostat/

 

[sunil1234]

well got the heating working now, after juggling a lone brown wire lol

thanks for the input

yep joining 3 to 1 didnt work, just shorted the fuse box lol