First off I am going to apologies as there will be some cross over with other threads, but I seem to have issues which cross on loads of topics so I just want to make sure I am not missing something obvious.
My kit:
Potterton Flamingo 50
Honeywell Mechanical room thermostat
Grundfos UPS 15-50 pump
Generic motorised valve
Issue 1:
Room thermostat is currently a rather ugly piece of modern art. It does bugger all. It’s a Honeywell mechanical job and it does click when you turn the dial and I have had a look at the wiring on the back which all appears to be in order. However it doesn't seem to control anything to do with the heating at the present time.
Issue 2:
The previous owners got round issue 1 by pulling out the hot water tank thermostat (yes I know). This means the boiler is always firing and the hot water is very hot. The radiators lead onto issue 3, but kind of work in the current state.
Issue 3:
If I turn on the upstairs rads and leave the downstairs ones off - upstairs is ok.
If I turn the upstairs rads off and turn on the downstairs ones - the downstairs rads are ok.
If I turn on 1 rad upstairs and 1 rad downstairs everything is ok.
If I turn on all the rads - you'd hardly know there is any heat at all.
At the present time I have just one radiator upstairs on and one downstairs on and both are at what I would consider a normal temperature. This suggests to me that the pump is working (or am I being optimistic?)
I have flushed the system several times and got a lot of sludge out. I have removed all the air (I think) from the system as well. And I can hear the pump working away. I have also added cleanser to give the system a good clean.
The bit I am a bit hazy on is the motorised valve. When the hot water cylinder gets to the desired temperature, does it tell the motorised valve to send all the hot water to the central heating system?
If it does then this may be the answer to all my problems and just getting a working room thermostat may fix the issue.
My only concern is that the thermostat is fine and there is a wiring issue somewhere else causing the thermostat not to work. Or do you believe it’s worth replacing the room thermostat before spending time tracing wires in walls?
Thanks for any replies
My kit:
Potterton Flamingo 50
Honeywell Mechanical room thermostat
Grundfos UPS 15-50 pump
Generic motorised valve
Issue 1:
Room thermostat is currently a rather ugly piece of modern art. It does bugger all. It’s a Honeywell mechanical job and it does click when you turn the dial and I have had a look at the wiring on the back which all appears to be in order. However it doesn't seem to control anything to do with the heating at the present time.
Issue 2:
The previous owners got round issue 1 by pulling out the hot water tank thermostat (yes I know). This means the boiler is always firing and the hot water is very hot. The radiators lead onto issue 3, but kind of work in the current state.
Issue 3:
If I turn on the upstairs rads and leave the downstairs ones off - upstairs is ok.
If I turn the upstairs rads off and turn on the downstairs ones - the downstairs rads are ok.
If I turn on 1 rad upstairs and 1 rad downstairs everything is ok.
If I turn on all the rads - you'd hardly know there is any heat at all.
At the present time I have just one radiator upstairs on and one downstairs on and both are at what I would consider a normal temperature. This suggests to me that the pump is working (or am I being optimistic?)
I have flushed the system several times and got a lot of sludge out. I have removed all the air (I think) from the system as well. And I can hear the pump working away. I have also added cleanser to give the system a good clean.
The bit I am a bit hazy on is the motorised valve. When the hot water cylinder gets to the desired temperature, does it tell the motorised valve to send all the hot water to the central heating system?
If it does then this may be the answer to all my problems and just getting a working room thermostat may fix the issue.
My only concern is that the thermostat is fine and there is a wiring issue somewhere else causing the thermostat not to work. Or do you believe it’s worth replacing the room thermostat before spending time tracing wires in walls?
Thanks for any replies