Ch only comes on with hw
![](https://static-assets.imageservice.cloud/3318450/sunvic-thermostat-wiring-diagram-professional-sunvic-3-port.png)
![](https://lh3.googleusercontent.com/pw/AL9nZEV3opFUKfUDVyVqRByBg4QTGWRwYqx4f1QaCyhDKvVOlryUuqPWd8wL9SGsWyv58qyerK-qJrixmxneES7bn8XoDhdBpZRXciPJZF1cbOZWTi2d4QZnYrib4ZNvxt4EjD5RXKqefXAYhHuyRVJSoEk-=w348-h97-no?authuser=0)
Wiring heating underfloor heatmiser uh4 diagram valve diynot.
Honeywell wiring diynot centre wires. 16 brilliant myson thermostat wiring diagram images. Ch only comes on with hw
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CH only comes on with HW - it has always been like this! | DIYnot Forums
![](https://lh3.googleusercontent.com/pw/AL9nZEV3opFUKfUDVyVqRByBg4QTGWRwYqx4f1QaCyhDKvVOlryUuqPWd8wL9SGsWyv58qyerK-qJrixmxneES7bn8XoDhdBpZRXciPJZF1cbOZWTi2d4QZnYrib4ZNvxt4EjD5RXKqefXAYhHuyRVJSoEk-=w348-h97-no?authuser=0)