hot water/radiator problem.

[dekesta]

Hi, im new here and could really do with some help please, especially as it is getting colder now!!

I recently moved into a house and tried turning on the ch but only the pump came on, the boiler didn't fire up at all.
Then i tried the hot water and the pump and boiler fired up straight away.
I was reluctant to call anyone out so I just replaced the programmer and thought that would help, but no difference.
Then i was reading about the synchron motor and thought that was faulty so replaced it, but still nothing??? Help

I can get the radiators hot by putting the 3 port valve into manual and turning the hot water on with the termostat up on the cylinder and down on the boiler ( a previous thread).

There is power to the synchron motor when the hot water is on but not when the ch is on????

any help would be appreciated, thanks

 

[seco services]

sounds like a wiring issue. not a component.

 

[kevplumb]

dodgy microswitch or the valve cant motor over enough to make it

hw is default

 

[seco services]

dodgy microswitch or the valve cant motor over enough to make it

hw is default

but the pump kicked in on heating only but no boiler.
There is power to the synchron motor when the hot water is on but not when the ch is on strange

 

[kevplumb]

where is the pump

 

[dekesta]

the pump is about two feet above the motorised valve in the cylinder cupboard

 

[dekesta]

When re fitting a new synch motor did I need to install in in a certain way?? or just stick it in??

 

[kevplumb]

the pump is about two feet above the motorised valve in the cylinder cupboard

above

 

[seco services]

has this problem been their since you moved in ?

 

[dekesta]

yes, if i remember rightly it is on the tee arm of the valve, and just above it. is this wrong??

 

[dekesta]

I moved in about two months ago, and never needed the ch i used the hot water but never thought to try the ch, so yes it has always been like it. So the setup must be fine.

 

[kevplumb]

View media item 11149
a is on the left

b is on the right

ab is in the middle

 

[dekesta]

ab

 

[kevplumb]

would have to concurr with seco on this sounds like a wiring prob

but as an after thought which port is connected to the cylinder ?

 

[seco services]

makes it sound like its fitted wrong way round then wired back to front.