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Issues with Samsung ASHP

Air Source Heat Pumps (ASHPs)

Last Post by JWilliams89 10 minutes ago

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JWilliams89

(@jwilliams89)

Trusted Member Member

Joined: 3 years ago

Posts: 43

Topic starter 13/11/2026 1:42 pm [#3224]

I'm a bit stumped and would appreciate some advice. Family members have recently moved into a rental property which has a Samsung (unsure of model yet however it won't be more than a few years old) fitted by an eco4 company. They had issues with the system not being very hot but still costing a lot of money each day, even when the weather is warm. It also seems to have an issue at night when the temp indoors plummets to 13c or below and struggles to get back up again. I set the system up so that the external controller isn't in charge, and set full water law up. The external controller is set to 30c so is constantly calling for power to let the samsung controller work as it should. I set the system up at 30c at -4 and 50c at 20c with the aim of dropping it bit by bit, and changed the DHW to 1-3pm so it can't impact on the heat overnight. However the system isn't working any better, when they woke up this morning the internal temp was 11c yet the power usage is still high. I'm suspecting that whoever installed it must have done a really bad job, as there is no way it should be this cold with full water law set up. Any suggestions of what else to look at? I've advised them to insist the landlord gets a good engineer in to service the system before winter fully sets in, although they're in SW Scotland so I'm not sure who to suggest.

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