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S30 FAULT CODE ON VALLIANT ECOFIT PURE 425

A

aghajan

Can anyone advise how to by pass the room stat to ascertain if its faulty as fault is s30 not calling for heat. Thanks
 
S30 isn’t a fault code, it’s a status code. What thermostat are you using? Can you post a photo of it? Is the boiler thermostat turned up?
 

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