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trebor12345
trebor12345
@trebor12345
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Joined: Feb 26, 2024
Last seen: Feb 7, 2026
Profile Activity
Topics: 10 / Replies: 115
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Reply
RE: Post-Traumatic Heat Pump Stress Disorder

Mars Excellent article. Love the term Post-Traumatic Heat Pump Stress Disorder (PTHPSD). I also monitor my HP "Like a Patient on Life Support".

4 weeks ago
Forum
Government Schemes, Regulations, Training, Planning & Organisations
Reply
RE: Replacing my 18 month old Hitachi Yutaki ASHP

@jamespa My mistake this was not the flow temperature chart, but my refrigerant temperature, it shows better what the heat pump was doing. Below i...

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

Yesterdays run 8th Dec. Chart is showing flow temperature. The HP didn't like a set temperature of 29C. Very little on periods. Lots of temperatur...

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

I have been experimenting with different flow temperatures to help facilitate the setting up of WC. Todays run was the lowest temperature I have used...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona Short Cycling

I am so envious, your are so fortunate to have all of the data at your finger tips!!  

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

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

I didn't run the heating over night. Only just now switched on. All I can add on the defrost is that the refrigerant temperature does drop as it go...

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

@sim0n0 Thanks

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

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

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

James. Yes I have turned off Night Shift.  

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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 ...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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?

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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