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My thermostat went blank Recharged battery. No good.cannot connect it to heat link. H72 fault code.

rgaila
Community Specialist
Community Specialist

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Original Poster: Paul Trafford 

My hive thermostat went blank. Tried recharging battery via USB. When I fixed the dial back on the base . Unable to connect power to heat link. H72 code displayed. So nothing works. It is connected to a conventional Ideal boiler.  Boiler including the hive nest was fitted three years ago.
 
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