Hi first time posting, but have used the site a lot in the past for fixes.
I work in IT so terminology may not be correct.
Can see a solution for this one so....
Background:
My central heating system has a controller with 3 separate clocks, downstairs, upstairs and water cylinder. Upstairs and downstairs have an analogue thermostat on each, thermostat for water is on cylinder.
There are 3 motorised valves, downstairs and upstairs have Danfoss 2 port and the water has a Holwell 2 port.
I believe when the motorised valve is on it starts my Oil Fired Bolier.
Everything except the boild were newly installed 4 years ago, boiler was working well and serviced due to budget constraints.
The issue:
Downstairs has on several occasions over the past 2 months been abnormally hot when the heating was not scheduled to be on, it has always occured after the heating has been on. The first time it happened I went to the downstairs motorised valve and moved the manual lever and it "free'd" itself and had no problems for a month, then this week it started again and moving the lever did not work so I changed the valve for a direct replacement.
It was ok for 1 day but now it has happened again, so I dont think the valve is at fault.
I discoved last night that if I switch the power off the motorised valve will reset.
Does this mean the new valve is unfortunatly faulty, or could there be a problem with my time clock or thermostat that it is sending false signals, does this ever happen?
Can anyone suggest a list of things to test to isolate the problem?
Thanks in advance,
Darran
I work in IT so terminology may not be correct.
Can see a solution for this one so....
Background:
My central heating system has a controller with 3 separate clocks, downstairs, upstairs and water cylinder. Upstairs and downstairs have an analogue thermostat on each, thermostat for water is on cylinder.
There are 3 motorised valves, downstairs and upstairs have Danfoss 2 port and the water has a Holwell 2 port.
I believe when the motorised valve is on it starts my Oil Fired Bolier.
Everything except the boild were newly installed 4 years ago, boiler was working well and serviced due to budget constraints.
The issue:
Downstairs has on several occasions over the past 2 months been abnormally hot when the heating was not scheduled to be on, it has always occured after the heating has been on. The first time it happened I went to the downstairs motorised valve and moved the manual lever and it "free'd" itself and had no problems for a month, then this week it started again and moving the lever did not work so I changed the valve for a direct replacement.
It was ok for 1 day but now it has happened again, so I dont think the valve is at fault.
I discoved last night that if I switch the power off the motorised valve will reset.
Does this mean the new valve is unfortunatly faulty, or could there be a problem with my time clock or thermostat that it is sending false signals, does this ever happen?
Can anyone suggest a list of things to test to isolate the problem?
Thanks in advance,
Darran
