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Samsung heat pump - data cable issue

 
Air Source Heat Pumps (ASHPs)
Last Post by Steveimpey 52 minutes ago
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 Steveimpey
(@steveimpey)
Active Member Member
Joined: 9 months ago
Posts: 11
Topic starter 15/07/2026 12:04 pm   [#3102]

My heat pump journey has never been smooth (I've had two installed at two different properties)

 

My latest issue is with my 12 kW Samsung EHS Mono Gen 6. It was installed 3 years ago and up until a few days ago it ran well until I lost hot water and started getting two error codes E101 and E604, which apparently relate to data transfer between the heat pump and controller.

 

Having spoken to Samsung, their first question was to ask about the cable that runs from the F1 and F2 terminals. Upon my electrician checking it appears 4 core cat 6 data cable was used instead of the the 2 core shielded CY data cable specified by Samsung. This has lead to the communication chip on the PCB having to work much harder due to "noise" which has resulted in it's failure.

 

Just to say, it wasn't a BUS install and the installer isn't MCS. accredited. (Installed in new build). I'm on good terms with the heating engineer who installed it and I don't want to damage our relationship, However, I'm now going to end up out of pocket due a new PCB being required along with running a new shielded data cable for a problem that should not have arisen in the first place.

 

I'd love to know other forum members experience of the data cable issue. Is this a wide spread problem? As an "end consumer" I don't expect to have to know about this, I just expect a fully functional reliable product.


This topic was modified 49 minutes ago by Steveimpey

   
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