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- 10 Nov 2017
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Hi all,
I am newly registered. This forum has been a useful resource since buying my own house 9 months ago - so thank you to everyone that contributes.
Far from an expert DIYer and certainly not a plumber, I am fairly mechanically minded and comfortable with most tools, so lately have been tackling an annoying problem with our heating system.
The symptoms aren't anything new: when our hot water is on, the radiators upstairs come on too.
Obvious starting point was the mid position valve. I duly drained the system down and removed it, before replacing with a Drayton MA1, like for like - NO CHANGE.
I double checked the orientation and wiring, before admitting I didn't know what to do next. So I called in a plumber (who is a friend), who turned up with an electrician in toe (they are part of a bigger firm).
Immediately he diagnosed the problem to be the mid position valve installed back-to-front. Great thought I, so I drained down and reversed it...same problem.
I got the plumber back, who tested the new valve i fitted (fresh from screwfix) and said it was faulty. They fitted a new valve from the van whilst I was at work and called to say problem solved...except, when I got home the upstairs was roasting even though only hot water was on...either they didn't stay long enough to verify or the problem came back.
Can anyone offer any obvious insights? Things that I should have already checked?
To give some background:
System is gravity fed with a small tank in the loft with a ball & cock setup.
Boiler downstairs is an ageing glowworm (which actually is a trooper and was serviced last year)
I only have 5 rads in the whole house (small terrace)
When heating is on, all rads get nice and hot (system has been drained and inhibited 3 times in one week!)
Pump is 'wurring' and does not rattle etc
Hot water comes through fine.
I have a Drayton Thermostat (pictures) which is currently showing green status and works ok.
I have attached some images currently on my phone.
I am newly registered. This forum has been a useful resource since buying my own house 9 months ago - so thank you to everyone that contributes.
Far from an expert DIYer and certainly not a plumber, I am fairly mechanically minded and comfortable with most tools, so lately have been tackling an annoying problem with our heating system.
The symptoms aren't anything new: when our hot water is on, the radiators upstairs come on too.
Obvious starting point was the mid position valve. I duly drained the system down and removed it, before replacing with a Drayton MA1, like for like - NO CHANGE.
I double checked the orientation and wiring, before admitting I didn't know what to do next. So I called in a plumber (who is a friend), who turned up with an electrician in toe (they are part of a bigger firm).
Immediately he diagnosed the problem to be the mid position valve installed back-to-front. Great thought I, so I drained down and reversed it...same problem.
I got the plumber back, who tested the new valve i fitted (fresh from screwfix) and said it was faulty. They fitted a new valve from the van whilst I was at work and called to say problem solved...except, when I got home the upstairs was roasting even though only hot water was on...either they didn't stay long enough to verify or the problem came back.
Can anyone offer any obvious insights? Things that I should have already checked?
To give some background:
System is gravity fed with a small tank in the loft with a ball & cock setup.
Boiler downstairs is an ageing glowworm (which actually is a trooper and was serviced last year)
I only have 5 rads in the whole house (small terrace)
When heating is on, all rads get nice and hot (system has been drained and inhibited 3 times in one week!)
Pump is 'wurring' and does not rattle etc
Hot water comes through fine.
I have a Drayton Thermostat (pictures) which is currently showing green status and works ok.
I have attached some images currently on my phone.