danfoss thermostat

[stugreenwood1]

Hi Folks
my central heating system comprises a combi boiler, danfoss room thermostat ret230p and a danfoss digital timer. i have been away on hols and now the heating doesnt switch on, the timer appears to be working, i got an engineer out to the boiler who has put in a link so that i can manually swith on the heating at the boiler, and he has suggested that it was the thermostat thats the prob - i got a drayton thermostat and replaced the dnafoss one but that doesnt seem to have solved the problem my questions are ?
1. can i use any type of thermostat or does it have to be the same one
2. if not the same one does it have to be a compatible one and if so does anyone know of the makes that would be compatable

thanks in advance for your help

 

[londonboy]

Its more likely to be the timer at fault, or did he check that?
No thermostats are exactly the same, but they all work he same way.

 

[stugreenwood1]

hi thanks for that
the timer appears to be working as normal and when turning the thermostat dial there was no clicking noise - which is why the engineer said it as that? would the timer be broken even if everything seemed to be working ok

 

[londonboy]

Although off the top of my head I dont know your thermostat.

Some thermostats need 240v to have a click, if the timers' relay isnt working correctly then it wont pass the 240v onto the timer.

Boiler > timer > thermostat > timer

Remove the timer and fit a wire link inbetween 1 and 4 and tell me if the thermostat starts working.