I fitted the new motor this morning and all is well.
I had to be a contortionist to access one of the retaining screws of the motor, lying on my back, with arms threaded through various gaps in the space by the bath and using a pocket mirror but with care and patience I got there.
The...
Put everything on constant!
I've not figured the wiring completely. They've used two parallel cables instead of multicore so it's confusing, and it's all unlabelled.
However with everything "ON", the white "Heating On" wire responds to the room stat, i.e. live when the temperature is...
I'll give the thermostat a test with the meter, and if it's OK which I expect it will be, I'll visit the local plumbing store for a new V4073A motor.
Many thanks,
Hot water is not circulating through the radiators.
Hot tap water is fine, pump works and the boiler works fine.
I've over-ridden the clock, i.e. CH is on constantly.
I've set the thermostat to 25° with the ambient temperature around 15°, and it indicates "On".
The motorised valve (a...