Forums

Forums
Members
trebor12345
Activity
 
Notifications
Clear all
trebor12345
trebor12345
@trebor12345
Member
Trusted Member
Joined: Feb 26, 2024
Last seen: Jun 1, 2025
Profile Activity
Topics: 4 / Replies: 31
AllTopicsReplies
Reply
RE: Hitachi Yutaki SCombi Heat Pump - Thermal Off's

Thanks for your help.

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Hitachi Yutaki SCombi Heat Pump - Thermal Off's

I have no idea, to me there is no logic. There is no information on-line about this Hitachi system, so a bit of a loss.

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Hitachi Yutaki SCombi Heat Pump - Thermal Off's

The heat generated in the 5 minute period is with the pump on which goes to the manifold and floor. My de-ice cycle is exactly as yours.

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Hitachi Yutaki SCombi Heat Pump - Thermal Off's

In the 5 minute period the compressor is running, taking electrical power and producing heat. This, what Hitachi call a "Thermal Off" I might call a ...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Hitachi Yutaki SCombi Heat Pump - Thermal Off's

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Hitachi Yutaki SCombi Heat PuThe mp - Thermal Off's

The first dip is the thermal off period where the compressor stops for 3 minutes and the refrigerant in the pipe from the heat pump to the internal un...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Hitachi Yutaki SCombi Heat Pump - Thermal Off's

The fan does turn off, water from inside is then pumped in reverse, power is take to heat the water and then the fan and compressor runs. Takes about...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Hitachi Yutaki SCombi Heat Pump - Thermal Off's
2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 47
Views: 939
Reply
RE: Hitachi Yutaki SCombi Heat Pump - Owners

@editor I just wanted to know other owners thoughts and experience of this system. I am having issues with short cycles and getting steady flow tempe...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Hitachi Yutaki SCombi Heat Pump - Owners
2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 2
Views: 157
Topic
New build ASHP and Solar Installation Certificates
1 year ago
Forum
Safety, Regulations, Tools, Plumbing & DIY Installations
Replies: 0
Views: 915
Page 3 / 3
Share:

Join Us!

Trusted Installers

Struggling to find a reliable heat pump installer? A poor installation can lead to inefficiencies and high running costs. We now connect homeowners with top-rated installers who deliver quality work and excellent service.

✅ Verified, trusted & experienced installers
✅ Nationwide coverage expanding
✅ Special offers available

👉 Find your installer now!

Latest Posts

x Powerful Protection for WordPress, from Shield Security
This Site Is Protected By
Shield Security →