room thermostat

[seb27]

hi i have just fitted a new drayton room thermostat but it doesnt same to be controlling the room temperature radiators remining hot no matter what setting its on any ideas to fix this problem

 

[brennan50]

Is it controlling a mid position valve, if yes it might be bypassing

 

[denso13]

What was the stat you replaced and what makes you think it is connected as the old one was?

 

[seb27]

Is it controlling a mid position valve, if yes it might be bypassing

its a sundial y plan 3 position diverter valve in mid position

 

[seb27]

What was the stat you replaced and what makes you think it is connected as the old one was?

honeywell room thermostat

 

[brennan50]

did you have this radiator problem before you replaced the room stat?

 

[seb27]

did you have this radiator problem before you replaced the room stat?

hi we throught that was the problem the room stat was broke because wasnt controlling the heating it was the old type honeywell stat

 

[simond]

If it is a Honeywell 3 port valve the room stat would be unlikely to give the fault described. In other words there is little to be gained by just parts changing.

Plumbing electrics is easy for me, but I have to admit to adopting your technique on my car engine management system!

 

[seb27]

If it is a Honeywell 3 port valve the room stat would be unlikely to give the fault described. In other words there is little to be gained by just parts changing.

Plumbing electrics is easy for me, but I have to admit to adopting your technique on my car engine management system!

ok thanks

 

[brennan50]

If you had the fault before you changed the room stat I would definetly be questioning the mid position valve. Honeywell valves are known for letting bypass