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Pressure Drop in primary circuit

Air Source Heat Pumps (ASHPs)

Last Post by ohdearism 4 days ago

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ohdearism

(@ohdearism)

Active Member Member

88 kWhs

Joined: 6 days ago

Posts: 6

Topic starter 09/04/2025 11:14 am

Good morning !

I am writing this as I am dealing with the Samsung help line !

Two days ago I posted about losing pressure in my heating systems primary circuit.

Many thanks To James for replying!

Since then I have had the system turned off . After the initiall cool down of the system I checked all pressures and topped up as required.

I deliberately had the two circuits at different pressures .

Over night there has been a slight drop in pressure (1 to 2 psi) evenly in both circuits this I think is down to residual cooling.

Given that the system lost its Pressure over night when operating, would I be right in thinking the fault lies in the outside unit ?

Given that it has no warranty. Can and is it worth repairing these things ?

Are there people who would take it on ?

If I have to replace the unit will the wiring and pipes be of the same standard ?

I know It is a big ask, but my faith in tradesmen is very low , I have a self build and have learnt that I can live with my own mistakes, but find it hard to come to terms with paying other people, to muck it up or not provide support .

Many regards

Alistair

P.s heating not on the Samsung phone options.

I have just been given a diferent number from the one on my paper work 0330 7262677 . I am going in !

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bontwoody

(@bontwoody)

Noble Member Contributor

5499 kWhs

Joined: 3 years ago

Posts: 798

09/04/2025 11:27 am

Hi Alistair. I’m not an engineer but it sounds as if your analysis is correct to me. Perhaps others will be able to confirm.

A replacement like for like should be a straight swap. I’ve fitted my own Samsung if that’s the route you want to take.

House-2 bed partial stone bungalow, 5kW Samsung Gen 6 ASHP (Self install)
6.9 kWp of PV
5kWh DC coupled battery
Blog: https://thegreeningofrosecottage.weebly.com/
Heatpump Stats: http://heatpumpmonitor.org/system/view?id=60

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ohdearism

(@ohdearism)

Active Member Member

88 kWhs

Joined: 6 days ago

Posts: 6

Topic starter 09/04/2025 11:36 am

Whoo hoo A number that worked , option 5 !

An engineer is going to call me back !!

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ohdearism

(@ohdearism)

Active Member Member

88 kWhs

Joined: 6 days ago

Posts: 6

Topic starter 09/04/2025 12:10 pm

Nick from Samsung has called me back .

He has said that the system has had major trauma, and possibly for a long term, due to failure of the pressure vessel , and that it may take a while to expell all the air in the primary circuit !

Will keep the fill loop attached and top it up as needed for a week , and then report back !

I will hope for the best, and admit that this help has quelled some of my cynacism ! Thanks Nick !

If only I had recieved similar attention from my service / installers !

Thankyou to all

Alistair

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