Problems with "smart" heating system

Gaz · 09-10-2022 01:53PM #1

I have a 2 zone heating system. We have a thermostat for heating down stairs, another upstairs for heating and one more for controlling water. The thermostats and app are Heatmiser neostats.

The heating has been off all summer and I went to test it now that the weather is getting cooler and I am having an odd problem.

Turning on the heating does not trigger the gas boiler to come on
Turning on the water does trigger the boiler to come on
The app and physical thermostats both show a little flame to indicate it is on but nothing happens at the boiler and rads stay cold
If I turn on the water, then turn on the heating the rads heat up

Any ideas before I call plumber ?

Wearb · 09-10-2022 02:38PM

Looks like end contacts on your heating zone valve are broken.

John.G · 09-10-2022 02:52PM

https://www.boards.ie/discussion/2058266701/problems-with-smart-heating-system

Does the problem happen with both heating zones, ie either D/stairs or U/stairs don't fire up the boiler? Is there a winter/summer switch on the boiler??.

Gaz · 09-10-2022 04:22PM

Same for upstairs and downstairs, no response from boiler but works if boiler is already on due to water being on.

System was in standby mode over the summer, put it back to auto and noticed problem.

mp31 · 09-10-2022 05:35PM

Sounds like the orange switched live output on valve open from BOTH 2-port zone valves for upstairs/downstairs is not getting to fire the boiler - faulty connection at the wiring centre or boiler perhaps?

Problems with "smart" heating system

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