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I've just bought a Celect DRT1 to replace old Sunvic TLM. The block connections are NO NC and COM. They also indicate you need to fit a Heating / Cooling jumper bridge otherwise it wont work. I've no idea how to do that and is it really necessary? Any thoughts on how to make this work, all...

Thanks for the input.

It still just shows a - when the hot tap is running. As stated above, its working with the CH on.

No one turned up, however I have the central heating working and the hot water appears to be working when the heating is on. I noticed that the pressure guage fitted on the pipe leaving the boiler is fluctuating between 0 and about 2 psi, is this the problem?

Thanks. Being looked at today, if the turn up!

The ch works for a while then stops heating, there is only a - in the display. DHW starts off hot and just goes cold after about 30 secs.

I have an Ideal isar combi, about 2 years old, which just stopped delivering hot water. Boiler fires up then stops, if I keep water running it gets tepid then cold, tepid then cold etc. I tried again with central heating on, but no luck. There are no fault codes showing on the display...