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trebor12345
trebor12345
@trebor12345
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Estimable Member
Joined: Feb 26, 2024
Last seen: Jun 8, 2026
Profile Activity
Topics: 15 / Replies: 142
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RE: Replacing my 18 month old Hitachi Yutaki ASHP

I could do the change, I do have an electronics background. But due to health reasons, I am just not confident in doing such things. He does have t...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Replacing my 18 month old Hitachi Yutaki ASHP

@jamespa No its a chargeable visit. So be at least £200.

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Replacing my 18 month old Hitachi Yutaki ASHP

@jamespa I have good news. I now have the instructions for: Thermo Off. This can be changed to 2C or OFF. I think I will go with the 2C option....

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Replacing my 18 month old Hitachi Yutaki ASHP

@jamespa Looking at setting up the weather compensation. I know from the building that 32C is fine for temperatures below 0C and 5C. But don’t k...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Replacing my 18 month old Hitachi Yutaki ASHP

JamesPa Below is the plot of yesterdays run (30 Nov). Surprise NO THERMO OFFS. Ran for 10.5 hours. Im afraid it's a fluke!!! I have always expre...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Replacing my 18 month old Hitachi Yutaki ASHP

JamesPa. Thats one thing that I do have right. Cross that one off the list.  

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Replacing my 18 month old Hitachi Yutaki ASHP

You always challenge my thinking! I don't specifically know why I think it's too long. My only thought is do other systems/users have that long time...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Replacing my 18 month old Hitachi Yutaki ASHP

JamesPa Just for information 29th Nov run. Nothing really new, except that these Thermo Off periods are way tooooo long at 1hr 20 mins and 2hrs 20 mi...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Hitachi Yutaki SCombi Heat Pump - Owners

@sim0n0 Here's a reply to help you out. As a owner of the same kit would like to hear more from you. Hopeful you will be able to message, or just...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Replacing my 18 month old Hitachi Yutaki ASHP

@jamespa Can I check something that I done some weeks ago. My underfloor manifold is set via the 12 flow gauges to a total of 20 l/m. In the UI of ...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Replacing my 18 month old Hitachi Yutaki ASHP

JamesPa Thank you for your very detailed reply. It's going to take me sometime to get to grips with this. I have started to keep a record of whats g...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Replacing my 18 month old Hitachi Yutaki ASHP

In mild conditions, yes I turn the heating off. This is done by putting the Heatmiser thermostat on the wall into the off position. So there is abso...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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