2 way motorised valve problem

mazdaq · 28 Jan 2020

ianmcd said:
Nope would never be a frozen pipe, try switching off the upstairs heating and the HW circuit and only leave the downstairs circuit on, what happens then ?

Then I get hotter pipe out of the valve to the downstairs rads, but no heat in the rads

ianmcd · 28 Jan 2020

what valves on the downstairs radiators? and how many radiators ?

mazdaq · 28 Jan 2020

Drayton thermostatic valves. 5 rads.

CBW · 28 Jan 2020

mazdaq said:
Drayton mistat n110r

Have you checked the batteries in the thermostat and checked it’s still paired?

mazdaq · 28 Jan 2020

The Novice said:
Have you checked the batteries in the thermostat and checked it’s still paired?

Yep checked that and all fine.

CBW · 28 Jan 2020

mazdaq said:
Yep checked that and all fine.

And decent alkaline batteries? Not cheapo zinc ones.

mazdaq · 28 Jan 2020

The Novice said:
And decent alkaline batteries? Not cheapo zinc ones.

Alkaline

mazdaq · 30 Jan 2020

Just out of interest, finally diagnosed the problem as a non-return valve that had got stuck.

ianmcd · 30 Jan 2020

ianmcd said:
If you are opening the valve manually and you have other zones open at the same , and the radiators are not heating then you have some kind of obstruction

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2 way motorised valve problem

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