Thanks for the advice Oilhead...
Just to recap my findings and thoughts on all this for people looking with a similar problem in the future.
The Control Board has two relays on it (Takamisawn LZ-24HS) that are powered by 24V when the software says to start the Hot Water or Central Heating...
I have isolated the Programmer by putting in links from 240V to HW then 240V to CH then 240V to HW & CH. I get everything working as they should ie HW and CH firing the boiler.
So problem is definately with the Programmer.
Is there a known problem/fix for the Programmer?
I was thinking of...
Hi Terry and Oilhead
Many thanks for taking the time to reply.
I can try this tomorrow although think I may have already indirectly done what you are suggsting.
I had the two return wires terminating in a terminal strip so I could measure the voltages when the HW and CH were meant to be ON...
Hiya
I have been doing some more investigations on this problem this morning:
I connected the Worcester Controller as follows:
Live & Neutral from the Central Heating System to the Controller
Central Heating & Hot Water returns from Controller to terminal blocks so I could measure the return...
Thanks for the reply 'Oilhead' - I will check the output etc as Terry suggested. I will be a few days as dont want to play around with it too much in this cold weather...
Thanks for the replies...
When I run the hot water tap I hear the flow switch relay click in. I need to try it again with the controller set to water and see if the system fires up, once the hot water is used up.
I just had another play with it and found slightly different symptoms with the...
Hi
I have the above oil fired Central Heat/Water heating system. I get it serviced each year but it is not due again for another 6 months so hoped someone could give some help on the following.
I am an Engineer so capable to handle moderate DIY jobs and have fixed problems on the boiler before...