No central heating, but hot water is OK

hat

Joined
14 Dec 2005
Messages
10
Reaction score
0
Country
United Kingdom
My Central Heating suddenly stopped working. However, the hot water is fine.

When I turn the Hot Water ON through the Programmer / Timer (say constant), the boiler immediately fires.

However, when I do the same for Central Heating, it doesn’t fire the Boiler (the Pilot is ON).

I have replaced the Programmer / Timer, but it doesn’t help.

Can the problem be with the Room Thermostat (it makes the clicking sound though, when turned) or is it the Boiler ?
 
Sponsored Links
Joined
24 Jul 2003
Messages
24,283
Reaction score
1,415
Location
London
Country
United Kingdom
We need to know more about your system. Motorised valves?
 

hat

Joined
14 Dec 2005
Messages
10
Reaction score
0
Country
United Kingdom
I think so. There is a 3 way valve near the hot water storage tank housing.
But the boiler doesn't even fire. It's a Glowwarm one.
 
Joined
14 Dec 2005
Messages
944
Reaction score
8
Location
Yorkshire
Country
United Kingdom
I think your syncron motor in the valve has gone ( easy fixed) or te swiching in the valve has gone (new valve).


If your the Hat of Sislden fame ill pop down and sort it for you!!
 
Sponsored Links

hat

Joined
14 Dec 2005
Messages
10
Reaction score
0
Country
United Kingdom
I'm down South (far from Yorkshire) !
The Motor (Grundfos) is less than a year old, so it could be the Valve.
But shouldn't the Boiler fire (burner at full blow) and then overheat or make noise, etc ? The boiler doesn't fire at all. However, it works fine for Hot Water.
 
Joined
14 Dec 2005
Messages
944
Reaction score
8
Location
Yorkshire
Country
United Kingdom
Its the motor in your valve...........its not winding the valve over and making the swtiches on the Central Heating side. What make of Valve is it you have?
 

hat

Joined
14 Dec 2005
Messages
10
Reaction score
0
Country
United Kingdom
I am not sure. Have to check. It's a silver coloured one.
So you mean it's not the main motor (the big Grundfos one), but the actual Valve (where is the second motor) ?
 
Joined
14 Dec 2005
Messages
944
Reaction score
8
Location
Yorkshire
Country
United Kingdom
If ist silver is likley to be a honeywell one. it contains a moteor called a syncron motor. Its that that is suspect. Its an easy job but a bit of a faff if you dont know what your doing.
 

hat

Joined
14 Dec 2005
Messages
10
Reaction score
0
Country
United Kingdom
I'm OK about Electrical connections, but if it involves plumbing as well (and turning off things), should I get someone to do it for me. What do you say ?
 
Sponsored Links
Top