I have had 2 relays switching heating panels working successfully with a SRT321 secure thermostat. I have recently added a third heating panel with its own relay. Every time I try to associate the thermostat/temp sensor with the third relay, it refuses to do so. (The 'corridor relay' in the picture. I tick and save, but when I return to it there is no tick.) All the relays are set up identically.
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Derek1948 1
I have had 2 relays switching heating panels working successfully with a SRT321 secure thermostat. I have recently added a third heating panel with its own relay. Every time I try to associate the thermostat/temp sensor with the third relay, it refuses to do so. (The 'corridor relay' in the picture. I tick and save, but when I return to it there is no tick.) All the relays are set up identically.
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