HVAC Questions? Ask an HVAC Expert for Answers ASAP
Hi, my name is ***** ***** I have been in the home improvement and repair field for 20 years. I will be glad to help you today. Do you still have hot water? Are you using a wireless thermostat? If so is the battery icon blinking on the thermostat?
I am so sorry I have to run out for an emergency. I will opt out and if no one has helped I will opt back in. Should only be an hour or so.
Hi. There are a few things it could be.i need to run through with you first
Andrew, I'm not sure that this is the answer. I have just now turned on the system. Our upstairs and downstairs are on separate switches.
This time I have turned on the water and both upstairs and downstairs. The system has stayed on but the downstairs radiators are not heating. However the upstairs radiators are very warm.
Each radiator has an individual thermostat (Terrier).
We do not have a central thermostat that controls all the radiators.
Yes, thats correct, the hot water and the radiators which are upstairs are unaffected.
Hi. Can you confirm it is not a Combi boiler buy a pressurised system boiler ,please and that you have a separate ho water tank?
It is a Vokera Mynute 30 HE. I don't think it is a combo boiler.
The boiler supplies heated water to the radiators and our hot water tank.
The radiators are split into upstairs and downstairs and have separate controls. Just downstairs radiators are not working.
So is it just the downstairs radiators that are not working? Can you check what pressure you havecatvthe boiler please
Thats correct, and I have bled each of the downstairs radiators. I restarted the heating but they are still not heating.
Ok . it sounds like you have an airlock or blockage somewhere in the pipework . do you have any manual bleed valves anywhere on the pipework , maybe next to the hotvwater cylinder?
Thermostatic rad valves can stick as well especially as they are off for a long period over summer. Take the head off ,it just unscrews and push down on the pin .if the pin is stuk down .then the valve can be tapped with a spanner to free the pin.
So I have given you the two things that I think is most likely your problem .
I have bled each of the radiators.
I have also just checked the TRVs and none of the Pins are stuck down.
Yes, when I'm turning on the heating I can decide whether I want to turn on the downstairs, upstairs or both.
They share the same boiler and pump but if I don't switch on the upstairs radiators they don't come on.
How you actually do that? Though. Do you have a programmer with two zonbes?
I have a heating controller with 3 switches.
One for upstairs, one for downstairs and one for water.
These can be controller by a timer or manually.
The heating is split into two zones, up and down.
Ok , that controller must either open a valve or in a pump to run the hot boiler water to the downstairs radiators.
you may have these
Thats right. I can't see the full image but there are 3 F222h devices supplied by Heat Merchants attached to the pipe work in the hot press.
Thanks for your help so far.
But due to the lack of significant progress over the last few days I called out a plumber this morning and the problem is fixed now.
Thanks but we could not go into the week-end without getting the problem fixed.
Hi . I am sorry you have had to call a plumber, we were so close to getting to the bottom of it . I think you will find it may be the motorised valve . anyway , all the best
If you still have any questions then feel free to go ahead and ask
I don't want to rate the service.
It took too long to get to the bottom of the issue and by then I needed to call a plumber due to the urgency of the issue.
The problem was fixed by the time you got close to the answer.
Please close the question.