Recent: Safely remove screen protector from a Macbook Air?

Mend > Home Heating Systems

Mend Heatrae Sadia Boiler Pump Heating

Radiators suddenly gone cold?

This is my second question about this, sorry. I have 8 radiators in my house, two of which are open. Very recently one of the open rads and one of the trv rads suddenly stopped heating. I have tried bleeding them, tried turning off the working rads to allow the heat to push through, and have just drained and re-filled the system but my troublesome rads are still not heating. The inlet pipes are roasting hot, but there's no heat coming from the radiators themselves. Can anyone please offer me some advice? PS should also mention that the whole system has had inhibitor in it for the past year, and also that it's heatrae sadia electric boilers with grundfos 15/50 pump.

Pamela
January 2007
Heatrae SadiaHeating, Home Heating SystemsBoiler Pump Heating
Make sure the valves at both ends of the rad you will be trying to clear are wide open, it might also be worth seeing if there is a flow control on the pump which you can turn up to a higher speed, most pumps have this feature.
If you still have no joy.... leave 1 valve closed and draw a couple of pints of water through the air vent on the rad, then close that valve, open the other and draw another couple of pints... you will hear air bubbles in the rad if it is indeed an airlock.

Pete
January 2007
Try closing valves on all rads except 1 of the 2 thats not working. If that rad then gets hot open valve to other one thats not working ( I suspect an airlock somewhere).
Hope this helps you.

Pete
January 2007

Automatic Answer

We may have found other answers which could help you.

Click here for Boiler Pump Heating

Related Questions ...

Mend problem domestic heating
1

Unexplained noises?

Good day, I have been experiencing a problem with my domestic heating system. There are occasions when the sy... [Read more]
Mend boiler pressure radiators
1

over pressure?

I have a greenstar 24i boiler, pressure is normal, when I turn heating on pressure increases and eventually op... [Read more]
Mend boiler programmer pump
1

ideal w rs460?

Hi there' im a electrician and have been asked to replace a programmer for this boiler ideal w rs460 which wa... [Read more]
Mend central heating fault reset
1

Central heating not working?

My glow worm micron 50FF works for a short time then shuts down and both lights go out. Neither of the two lig... [Read more]
Mend central heating programmer boiler
2

siemens rwb9 connections to boiler?

I have a SIEMENS RWB9 central heating programmer. I am wanting to know the wiring layout for the connection to... [Read more]
Mend central heating boiler thermostat
2

Room thermostat?

I've recently repositioned my central heating pump in our recently bought house. We found out the previous own... [Read more]
Mend boiler heating pressure
1

no pilot light no burner or clicking?

Came home to no centrol heating had hot water until used it up.so no hot water either .pressure gone from syst... [Read more]
Mend flashing hello stopped
3

Sabre HE 3 second blinking green then flashing red when on?

Hello. My Sabre HE stopped working this morning after working fine. I have done lots of searches and tried t... [Read more]
Mend boiler pressure fault
1

Vaillant Ecotech Plus 831 F22 fault?

I've been having problems for 3 weeks now, and on the 3rd plumber, and still not fixed. First had F75 fault a... [Read more]
Mend combi pump working
2

Sabre 29he plus combi condensing Boiler?

Hi, My boiler is broken down. The pump is working fine and the fan isn't switching on and i can not reset the... [Read more]
Mend boiler heating firebird
1

Firebird Super Q 50/82 Oil Boiler, Tank, Pump & Grasslin 24/7 ?

My manual timer does not work and as a result heating will not come on. Sounds like it's working as I can hear... [Read more]
Mend central heating boiler hot water
2

does pump opperate on baxi boiler when hot water tap turned on?

does pump operate on baxi 105 he boiler when hot water tap turned on or just when central heating turned on Th... [Read more]
Mend central heating boiler months ago
1

how can I fix my old glow worm central heating boiler model 65-80?

several months ago the ignition on my conventional flue boiler failed to stay alight and I had an idea that it... [Read more]
Mend warm radiators help
2

Luke warm radiators?

Really need help with a central heating problem (old, but sturdy back boiler open vented system in a flat - o... [Read more]
Mend boiler central heating grundfos
2

Heating?

I have an old Ideal W boiler (conventional) which heats the water cylinder and will go to central heating only... [Read more]
Mend Heating, Home Heating Systems

Remove cover off gas boiler?
Mend radiator thermostat heating

One radiator in a bedroom is always cold?
Mend boiler heating systems

Remove boiler cover?
Mend Heating, Home Heating Systems

How to fix my fireplace?
Mend boiler heating lockout

Greenstar 24Ri boiler, fast flashing - can I reset?
Mend thermostat heating siemens

Siemens RDJ10RF thermostat problem?
Mend boiler thermostat replacement

Oil fired boiler thermostat?
Mend heating radiators boiler

Worcester boiler dripping water?
Mend vaillant ecotec boiler

Vaillant ecotec 831 plus?
Mend heating boiler Worcester Bosch

Boiler cycle?
Mend Heating, Home Heating Systems

How do i stop the time from flashing on the Siemens RDJ100RF?
Mend Worcester Combi Ignition

Worcester 30 Cadillac combi boiler won’t fire up and the EA?

How to mend ...

Find out how to mend just about anything howtomendit.com for free repair help, information and advice.
Mend Home Heating Systems ...

Related Categories

Mend Convector Heaters
Convector Heaters
Mend Fan Heaters
Fan Heaters
Mend Oil Filled Radiators
Oil Filled Radiators

Topic

Heatrae Sadia Radiators Cold - Help!