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trebor12345
trebor12345
@trebor12345
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Joined: Feb 26, 2024
Last seen: Jan 9, 2026
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Topics: 8 / Replies: 104
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RE: Replacing my 18 month old Hitachi Yutaki ASHP

JamesPa You will be please to know that this afternoon WE made the DIL switch change to give us a 2C Thermo OFF time. The change was easy, but stress...

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

The Thermo Off (not Thermal Off) only relates to the latest SW installed by Hitachi. To change the Thermo Off setting you have to go into the control...

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

@jamespa The new sw was to prevent rapid short cycles which we were seeing every 3 to 5 minutes. BTW. Heating ticking away at 50% Night Setting. N...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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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...

1 month 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.

1 month 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....

1 month 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...

1 month 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...

1 month 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.  

1 month ago
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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...

1 month 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...

1 month 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...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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