- Reaction score
- 334
If this was something I was asked to look at I would check the voltage on the control to the boiler (call for heating), I would prove the function of the boiler using a link between 3 and 4 I would prove be wanting to prove it was off when the link wasn't in place and that it fired up with the link. If not I'd call valiant and speak to there technical dept.
To prove the nest stat I would want to see the valves move. I think you can press the button on the controller to get it to call for heat. The arm moves on the side and I think it goes loose when energised.
To check the connections through the valves I would probe between earth and the orange from the valve in the energised and the de-energised positions. I'd only expect voltage on the orange core when the valve is open.
To prove the nest stat I would want to see the valves move. I think you can press the button on the controller to get it to call for heat. The arm moves on the side and I think it goes loose when energised.
To check the connections through the valves I would probe between earth and the orange from the valve in the energised and the de-energised positions. I'd only expect voltage on the orange core when the valve is open.