Ok,
Not sure what this is but have noticed that sometimes at night I can hear my pump gently humming in the background. The Ch/HW are both on timed and when I check they are both off and not calling for heat/HW.
In fact even if move both the settings for Ch/HW to off the pump remains on. I have tried waiting to see if it goes off after a while but it does not. In fact the only way of stopping it is to switch the mains power off.
Are these the symptoms of a sticky motorised valve? If so I still cant understand why the pump works if all the controls are off, unless the motorised valves run independent from the control box. In other words would the pump still run if the CH valve was stuck in open irrespective of the fact that the C/h is not calling for heat?
many thanks.
Not sure what this is but have noticed that sometimes at night I can hear my pump gently humming in the background. The Ch/HW are both on timed and when I check they are both off and not calling for heat/HW.
In fact even if move both the settings for Ch/HW to off the pump remains on. I have tried waiting to see if it goes off after a while but it does not. In fact the only way of stopping it is to switch the mains power off.
Are these the symptoms of a sticky motorised valve? If so I still cant understand why the pump works if all the controls are off, unless the motorised valves run independent from the control box. In other words would the pump still run if the CH valve was stuck in open irrespective of the fact that the C/h is not calling for heat?
many thanks.
