Honeywell CM927 Programmer to WB 37CDi auto doesnt work

[spacecat]

Before I call the installer any tips on why this might be happening?

i have programmed the days and copied them to all the other days and saved etc

when i put it in auto mode the boiler just comes on and stays on even after the the last time period has finished

i.e.its timed to go off at 10pm but if i put it on auto after 10pm it still comes on

 

[onlyfitidealboilers]

what have you set the off temperature too?

 

[spacecat]

all the temps are the same start and finish

i want it to maintain 20c util 10pm and then go off until morning

 

[onlyfitidealboilers]

set the off temp at 10 o'clock to 5 degrees then it wont come on unless it drops below 5. these programmers dont have an off time!!

 

[spacecat]

ok will do thanks for the tip

 

[spacecat]

That worked setting the temp very low for the off time thanks but seems a bit silly to have to do it like that.

Why not just go off with the timer

 

[D_Hailsham]

That worked setting the temp very low for the off time thanks but seems a bit silly to have to do it like that.

Why not just go off with the timer

It's done this way so the thermostat will act as a frost stat. The boiler will only come on if the temperature drops below overnight setting.

The OFF position on the slider switch does exactly the same thing; it sets the room temperature to 5degC.

It is all explained in the user manual.

 

[spacecat]

That worked setting the temp very low for the off time thanks but seems a bit silly to have to do it like that.

Why not just go off with the timer

It's done this way so the thermostat will act as a frost stat. The boiler will only come on if the temperature drops below overnight setting.

The OFF position on the slider switch does exactly the same thing; it sets the room temperature to 5degC.

It is all explained in the user manual.

No need to roll the eyes mate, why not just go back to the frost setting when the timed setting ends like it does when its off?ridiculous to have to set all ending timings at 5c

 

[onlyfitidealboilers]

its there to stop your house going cold as it costs more cash to heat a cold house up glad you sorted it tho

 

[spacecat]

its there to stop your house going cold as it costs more cash to heat a cold house up glad you sorted it tho

Is it best to leave the boiler on all day at a low setting? i tend to just put it on in the mornings and evenings

 

[D_Hailsham]

Why not just go back to the frost setting when the timed setting ends like it does when its off?ridiculous to have to set all ending timings at 5c

It's called flexibility.

The OFF setting is there for when you are away on holiday etc. The night time temperature can be set to what you like. Some people like it to be fairly warm overnight, i.e about 15C. The OFF temperature is set separately from the night temperature.