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trebor12345

@trebor12345

Member

Estimable Member

Joined: Feb 26, 2024
Last seen: Apr 14, 2026

Topics: 12 / Replies: 130

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RE: Replacing my 18 month old Hitachi Yutaki ASHP

@sim0n0 Thanks

4 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Replacing my 18 month old Hitachi Yutaki ASHP

@sim0n0 Thanks. Did you manage to get an evaporator temperature prior to defrost?

4 months ago

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Air Source Heat Pumps (ASHPs)

RE: Replacing my 18 month old Hitachi Yutaki ASHP

James. Yes I have turned off Night Shift.

4 months ago

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Air Source Heat Pumps (ASHPs)

RE: Replacing my 18 month old Hitachi Yutaki ASHP

The outside temperature has tonight fallen to around 0C and I am now in trouble with defrosts. I am seeing just prior to the defrost, an evaporator ...

4 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Replacing my 18 month old Hitachi Yutaki ASHP

JamesPa Have you seen anything in the manual about how the defrost cycle works when there is: a power cut, thermal off, demand off, HP start up, etc?

4 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Replacing my 18 month old Hitachi Yutaki ASHP

Sim0n0 JamesPa Thank you.

4 months ago

Forum

Air Source Heat Pumps (ASHPs)

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...

4 months ago

Forum

Air Source Heat Pumps (ASHPs)

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...

4 months ago

Forum

Air Source Heat Pumps (ASHPs)

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...

4 months ago

Forum

Air Source Heat Pumps (ASHPs)

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...

4 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Replacing my 18 month old Hitachi Yutaki ASHP

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

4 months ago

Forum

Air Source Heat Pumps (ASHPs)

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....

4 months ago

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