I have recently bought a Sunvic TLX7501 digital stat to replace the old Sunvic 2259 unit. I have wired the live wires to points 3 and 2 on the stat unit leaving point 1 blank. The negative wires have been joined and then taped. The Sunvic technical helpline confirmed that the 2 wires have been connected to the right connectors but still the unit doesn't send a signal to the combi boiler. The room stat does click in and out and will display a gas symbol....just nothing actually happens. Has anyone else had a digital stat that just doesn't repond? Any help you could give would be great.
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Jo_24679, please note 20 , your post has been split
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moderator
Jo_24679, please note 20 , your post has been split