My house losses a lot of heat (it's a single brick building), compared to last year I'm losing a lot less heat than previously.
That's why I was surprised it wasn't as cold as I'd expect it to be
Nest heating issues
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My house losses a lot of heat (it's a single brick building), compared to last year I'm losing a lot less heat than previously.
That's why I was surprised it wasn't as cold as I'd expect it to be
So yesterday I cleaned my Fernox filter for the first time and there was a load of gunk on there.
I'll clean it again around NYE just to see if it's collecting loads.
I'll be pouring the X400 inhibitor in there this weekend.
Just to make sure I'm doing it right do I:
I'll clean it again around NYE just to see if it's collecting loads.
I'll be pouring the X400 inhibitor in there this weekend.
Just to make sure I'm doing it right do I:
- Drain the system
- Open the heated towel rail and pour a litre in
- Close heated towel rail and then refill the system
- Do I then turn the heat up and leave the system running?
- After 2-3 weeks drain the entire system again and refill.
Associate
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ANSWER: I had the exactly the same issue...periodic temp, couldnt reach the target temperature. So got a local heating engineer out. It appeared that the original NEST installer had left the receiver in my 30cdi worcester boiler and my old thermostat was overriding the nest controller. So your best bet is to get an engineer out and check the old receiver is disconnected because up to that point there was basically two controls speaking to the boiler...... hope that helps
Sorry to dig up an old thread, but I’ve been searching the whole net for a similar issue as mine and I have finally found a thread with the exact same issue!!!
I’ve recently had a new radiator system - 13 rads - along with a new boiler and Nest 3rd Gen thermostat installed. The boiler is a Worcester Bosch 8000 Greenstar Life Gr8300iw 35 C Ng (35Kw combi boiler). The TRV are all danfoss ras-c2 on normal rads and standard chrome valves on the vertical rads.
The Nest thermostat is in my hallway and is wired directly to the heat link which is then wired to the boiler, the thermostat is then connected wirelessly to work with the app.
Was this problem resolved in the end? WhG was the solution?
I’ve recently had a new radiator system - 13 rads - along with a new boiler and Nest 3rd Gen thermostat installed. The boiler is a Worcester Bosch 8000 Greenstar Life Gr8300iw 35 C Ng (35Kw combi boiler). The TRV are all danfoss ras-c2 on normal rads and standard chrome valves on the vertical rads.
The Nest thermostat is in my hallway and is wired directly to the heat link which is then wired to the boiler, the thermostat is then connected wirelessly to work with the app.
Was this problem resolved in the end? WhG was the solution?
The thermostat is probably not in the best of places being in a hallway since most the heat is going to go straight up your stairs, presuming you're in a house. I would move the thermostat to the table top stand and power it from the USB charger and place the thermostat in the lounge or a bedroom.
I don’t think the nest being in the hallway is causing the issue, it just means my ambient temp will never reach the target which I don’t care for.
My problem is the fact the radiators at most of the time get luke warm and stay that way and at times get red hot. I’m so confused as to what’s going on with my heating
I don’t think the nest being in the hallway is causing the issue, it just means my ambient temp will never reach the target which I don’t care for.
My problem is the fact the radiators at most of the time get luke warm and stay that way and at times get red hot. I’m so confused as to what’s going on with my heating
I see.
Maybe some of the rads don't have their valves set correctly. I know when we had a towel radiator you could adjust it on both sides and if it's too open on one side it steals too much heat from the loop.
I’ll write my whole situation to try get as much advice as possible.
I’ve recently had a new radiator system - 13 rads - along with a new boiler and Nest 3rd Gen thermostat installed. The boiler is a Worcester Bosch 8000 Greenstar Life Gr8300iw 35 C Ng (35Kw combi boiler). The TRV are all danfoss ras-c2 on normal rads and standard chrome valves on the vertical rads.
The Nest thermostat is in my hallway and is wired directly to the heat link which is then wired to the boiler, the thermostat is then connected wirelessly to work with the app.
The problem is quite a weird one so I’ll explain the best I can...
Lets assume the ambient temp is 17°, I then crank up my thermostat to 30° which then fires up the boiler and rads start getting hot - normal thermostat procedure.
My problem starts here, the radiators at times will get luke warm at best and stay at that temperature. I then need to switch the thermostat on and off a few times via the app the radiators will eventually start heating up to a point where I can’t touch them. Other times I’ll switch the heating on and radiators will start getting red hot as they should.
I don’t think the TRVs are switching the rads off as the rooms/hallways are not overly hot. And when the radiators want to work they stay hot for a very long time without cooling down.
The boiler also stays firing throughout from initial thermostat temp change until i turn it off. I’ve checked the heat link and when I turn the thermostat on it clicks and fires the boiler up and shuts it down when i switch it off.
The radiators have not been balanced and there is no air in the system as the rads get hot top to bottom and I have checked each radiator with a key to make sure. The system was cleaned out twice and the water was coming out clear so I assume it’s not a dirty system. When I have bled the radiators the water has a slight yellow tint to it.
I don’t understand what on earth is going on, is my boiler to blame or thermostat? Is it a balancing issue?
I’ve recently had a new radiator system - 13 rads - along with a new boiler and Nest 3rd Gen thermostat installed. The boiler is a Worcester Bosch 8000 Greenstar Life Gr8300iw 35 C Ng (35Kw combi boiler). The TRV are all danfoss ras-c2 on normal rads and standard chrome valves on the vertical rads.
The Nest thermostat is in my hallway and is wired directly to the heat link which is then wired to the boiler, the thermostat is then connected wirelessly to work with the app.
The problem is quite a weird one so I’ll explain the best I can...
Lets assume the ambient temp is 17°, I then crank up my thermostat to 30° which then fires up the boiler and rads start getting hot - normal thermostat procedure.
My problem starts here, the radiators at times will get luke warm at best and stay at that temperature. I then need to switch the thermostat on and off a few times via the app the radiators will eventually start heating up to a point where I can’t touch them. Other times I’ll switch the heating on and radiators will start getting red hot as they should.
I don’t think the TRVs are switching the rads off as the rooms/hallways are not overly hot. And when the radiators want to work they stay hot for a very long time without cooling down.
The boiler also stays firing throughout from initial thermostat temp change until i turn it off. I’ve checked the heat link and when I turn the thermostat on it clicks and fires the boiler up and shuts it down when i switch it off.
The radiators have not been balanced and there is no air in the system as the rads get hot top to bottom and I have checked each radiator with a key to make sure. The system was cleaned out twice and the water was coming out clear so I assume it’s not a dirty system. When I have bled the radiators the water has a slight yellow tint to it.
I don’t understand what on earth is going on, is my boiler to blame or thermostat? Is it a balancing issue?
Soldato
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If it's a new install, did the installer balance the radiators? If not, you may have to do that to get it all working optimally.
EDIT: I posted that at the same time as you posted above. When I moved into a new build 3 years ago. I fitted a dual zone Nest system. I had to balance the radiators to get the correct heat output from them.
It sounds like your Nest is working okay and it's a central heating issue. Is your Nest setup a single zone? Is it setup with your boiler to use OpenTherm?
EDIT: I posted that at the same time as you posted above. When I moved into a new build 3 years ago. I fitted a dual zone Nest system. I had to balance the radiators to get the correct heat output from them.
It sounds like your Nest is working okay and it's a central heating issue. Is your Nest setup a single zone? Is it setup with your boiler to use OpenTherm?
I'd stab a guess at balancing somewhere and maybe a faulty TRV or two. Are they cheap TRV's, they can be sticky, eg faulty.
yes the towel rad and vertical rads have chrome valves which are so difficult to adjust. I don’t understand which side is the trv and which the lock shield, or does it now work like that?
Prob best to wait until they've looked at the balancing. Odd they hadn't already done that. Don't let them leave until you've seen each rad get hot in a reasonably short time. Tell them which rooms you want warmest, they should turn the stats down on the rooms you use least, up in the hall so it doesn't just stay on forever when the rooms are comfortable.
yes I only have one zone controlling the house.
from my understanding the boiler I have isn’t comparable with opentherm. But just so I know, how do I check this?
they obviously wanted to leave ASAP without doing the full job. Thank you for your advice
Yes, I knew which side to adjust with an allen key as the installer explained it to me, I think the other side has the same looking cap. It was a bit awkward because it had to be fitted to get the pipe work right then removed to repair the wall around new pipe route into wall and the original that used to be hidden behind a standard rad.
Soldato
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- Scotland
I imagine a quick check of the internet or boiler manual will tell you. Some boiler front covers can only be opened by a gas safe engineer so you probably can't take it off to check.