12kW Samsung ASHP with Hive thermostat – help needed please

LFranklin · 2023-01-30T15:49:53Z

I have a 12kW Samsung ASHP with Hive thermostat that my installers (Greener Living) don't seem to be able to make work consistently or economically. The whole system is installed into the loft with the thermostat down in the L shape living/dining room. about 2 weeks ago the bedroom it sits over can hear what i think is the expansion vessel working and its very annoying when trying to sleep! - wasn't that loud until then so not sure why it is loud all of a sudden) It's been installed since end of December now and i'm struggling with it not heating up last two rads on the system (which are downstairs in the living/dining room). They have added a second pump onto the return side of the system and that seemed to help for a few hours when first installed but now not coming back on again. if i turn the TRV off on others earlier in the system off the last two do get warm but even then not hot) so the system is taking a lot of kWh to run to get the living room up to temp and then the temp is dropping quickly once it reaches 18 degrees as not enough ambient heat from the working radiators on the system. i have had to take to turning thermostat down as couldn't afford the £15 per day electricity bill it was generating. We had solar installed at the time too (16 x 405w panels) and even that isn't working right at just 1-1.8kwh per day generation at the moment which seems extremely poor for this size of system that works on PV and min 7 hours daylight at the moment. All in all feel at my wits end with it all

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Air Source Heat Pumps (ASHPs)

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LFranklin

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Topic starter 19/02/2023 9:23 pm

@dunlorn I've sent you message 👍

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