On 18 Sep, 12:11, "Jim Alexander" wrote:
"iain_b" wrote in message

oups.com...



On 17 Sep, 13:11, "Jim Alexander" wrote:
"iain_b" wrote in message

roups.com... Hi all,

I've got a British Gasboiler, Model 50F2 (made by Potterton).

When I try to put the radiators on - nothing happens. When I try to
put the hot water on - both the hot water and radiators come on. The
boileris 7 years old and the problem has just started, is there
something sticking?

Not necessarily the only answer but the symptoms can be explained by a
faulty heating zone valve, either synchron motor or microswitch.

Jim A

Thanks Jim,
Further investigation shows that theboilerdoesn't even 'kick in'
when the heating is switched to 'on' and if theboileris running with
the hot water on then switching the heating to 'on' will switch the
boileroff altogether - is this more likely to be pointing to the
microswitch?

Firstly you need to post whether you have 2 x 2 port zone valves or 1 x 3
port. From your description of the fault guessing 3 port.

Jim A- Hide quoted text -

- Show quoted text -

Hi Jim,

There are 2 motorized valves in the system.
Now the boiler switches on and stays on even if both hot water and
heating are in the 'off' position - is it likely that the wall
controller is faulty? It's a Britisg Gas UP1 controller, is this
likely to be a Honeywell or similar and any ideas where I could get
one?

Thanks,

Iain.