Renewable Heating Hub Heat Pump Forums

Search with Wattson
Forums
Renewable Heating
Air Source Heat Pum...
PUHZ SW120Y & EHSC-...
 
Notifications
Clear all

Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!

PUHZ SW120Y & EHSC-VM2D - Buffer tank to Volumiser

 
Air Source Heat Pumps (ASHPs)
1 Posts
1 Users
0 Reactions
1,116 Views
RSS
 DavidAlgarve
(@davidalgarve)
Reputable Member Member
Joined: 3 years ago
Posts: 249
Topic starter 13/10/2025 3:35 pm   [#2513]

Eventually I was able to find someone here in the Algarve to, amongst other things, convert my buffer tank to a volumiser and in the process remove the secondary pump. They failed on the Wireless Controller and the support from Mitsubishi Portugal throughout, was utterly deplorable.

I picked up from somewhere that  a dip switch should have been changed when a buffer tank is not used and in lieu of assistance from Mitsu Portugal I put this question to Mitsu UK:

"I thought I recalled that a dip switch change was required, but the contractor had no knowledge of this.
I have studied the manual and see that SW 2-6 is for On/Off “Mixing Tank”."

The reply was:

"If you are a homeowner we cant advise on electrical or dip switch issues and this would require a callout to investigate"

So, with the heating season imminent, I am stuck.

Is anyone able/ willing to confirm the facts re this switch selection? 

 


342sq m "Upside down" house in Algarve. Portugal
Mitsubishi PUHZ-120YUK 12kW ASHP
12 Solar Panels Growatt Inverter
2 x Growatt 7.5kW Batteries
Fronius EV Charger
Kia e- Niro 64kW


   
Quote
Forum Jump:
  Previous Topic
Next Topic  
Share:

SPONSORS

Join Us!

Installer Finder

Degrees of Separation

Latest Posts

SPONSORS

Click to access the login or register cheese
Protected By
Shield Security PRO