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Hot Water Temp Variation

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(@shaeney)
Eminent Member Member
Joined: 1 year ago
Posts: 13
Topic starter  

I have a Stiebel ASHP and recently added a Home Assistant Green, which has been game changing.

Using Home Assistant, i've noticed the Hot Water temperature in the tank is  reported varying +/- 5 degrees as per below. This is irrespective of actual use.

 

I would be very surprised if this is due to heat loss on the foam-insulated tank.

 

Does anyone have any ideas what might be causing this?

Screenshot 2024 02 17 120726

 

 

 


   
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Toodles
(@toodles)
Famed Member Contributor
Joined: 3 years ago
Posts: 1919
 

Could it be that there is a 3 port valve in the circuit and it is not fully closing in either direction? Failure to close fully would allow dissipation of energy from the tank thus lowering the temperature of the stored water. Regards, Toodles.

Toodles, he heats his home with cold draughts and cooks his food with magnets.


   
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