S
santhosh
Hi All,
I had the central heating system replaced recently, the set up is below
Vaillant Eco Plus 637 system boiler
Excelsior hot water unvented cylinder
Honeywell timer - ST9400A/C
Honeywell thermostat
I have the below issues:
Boiler will turn on and off as per the timing set in the timer, but once the timer goes off say about 20 mins later boiler starts again and runs for a minute and turns off whilst the fan continues to run for another 10 mins (fan in the boiler operating for 10 mins after it shuts off is normal I believe) but this continues round through the clock day and night when the timer is off.
There is no ho****er mode in the display on the boiler, pressing the left button doesnot show any settings for the ho****er mode and radiator icon is always on and flashing suggesting that the boiler is in central heating mode and pressing the right button shows the settings for target flow temperature and water pressure. The fitter says ho****er temperature is controlled using the thermostat on the ho****er cylinder and in system boiler there will not be any settings available from the boiler. But the manual doesn't say so, they say all is well but I doubt it.
I have provided the images of the boiler display panel, thermostat, ho****er cylinder and timer below, please answer my below questions:
1) Should the System boiler have hot water mode or not? should the tap icon be shown on the display panel?
2) will the frequent start and stop of boiler (once every 20 mins) wont affect its performance? and is it normal as told by the fitter?
Thankyou,
Santhosh
I had the central heating system replaced recently, the set up is below
Vaillant Eco Plus 637 system boiler
Excelsior hot water unvented cylinder
Honeywell timer - ST9400A/C
Honeywell thermostat
I have the below issues:
Boiler will turn on and off as per the timing set in the timer, but once the timer goes off say about 20 mins later boiler starts again and runs for a minute and turns off whilst the fan continues to run for another 10 mins (fan in the boiler operating for 10 mins after it shuts off is normal I believe) but this continues round through the clock day and night when the timer is off.
There is no ho****er mode in the display on the boiler, pressing the left button doesnot show any settings for the ho****er mode and radiator icon is always on and flashing suggesting that the boiler is in central heating mode and pressing the right button shows the settings for target flow temperature and water pressure. The fitter says ho****er temperature is controlled using the thermostat on the ho****er cylinder and in system boiler there will not be any settings available from the boiler. But the manual doesn't say so, they say all is well but I doubt it.
I have provided the images of the boiler display panel, thermostat, ho****er cylinder and timer below, please answer my below questions:
1) Should the System boiler have hot water mode or not? should the tap icon be shown on the display panel?
2) will the frequent start and stop of boiler (once every 20 mins) wont affect its performance? and is it normal as told by the fitter?
Thankyou,
Santhosh