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Looking for the Grant Aerona 3 setting to turn off completely at 20 OAT

 
Air Source Heat Pumps (ASHPs)
Last Post by damonc 9 hours ago
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 damonc
(@damonc)
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63 kWhs
Joined: 1 month ago
Posts: 6
Topic starter 09/03/2025 1:49 pm  

I'm running my Aerona 3 on WC and the 'warm end of that is set to 23LWT @ 16OAT  The ASHP doesn't allow a min LWT of less than 23 but as the OAT starts going above 16c there'll be a point where I'd rather the ASHP just stopped completely rather than producing 23c. I do have room thermostats which are set high to run the system open but I don't really want to use them to shut down the heating room by room as I'll probably end up with the ASHP pushing water through one rad in the last bedroom to turn off. I've hunted through the manual but I can't find a setting which says 'stop heating when OAT reaches a set temp' or similar. Has anyone found one?


   
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