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AllyFish
@allyfish
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Noble Member
Joined: Oct 31, 2022
Last seen: Sep 13, 2025
Profile Activity
Topics: 23 / Replies: 473
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Reply
RE: 17kw Grant Aerona heat pump not performing

@hughf Chofu use an end suction centrifugal pump however, not an in-line pump. Chances are only the OEM pump will fit.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 17kw Grant Aerona heat pump not performing

It really sucks Sonix, you've tried to do the right thing and been badly let down. I would be surprised if the plate heat exchanger is badly blocked, ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 17kw Grant Aerona heat pump not performing

Hi @Soniks, that's really bad news. Has the ASHP installation been installed by a Grant G1 approved installer? If it has, and is has been serviced and...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Auxiliary Heating

My Grant has an auxiliary output contact, which is used to control a separate 3kW immersion heater via a relay. It's a back-up heater, supplementary h...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
MCS Audit
2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 3
Views: 1507
Reply
RE: Barely used Air Source Heat Pump and Water Cylinder

'Elephant in the room' photo that first one showing monobloc location, it was never going to run efficiently. Sadly all too common. Sometimes it's ins...

2 years ago
Forum
Buy & Sell
Reply
RE: A question about voltage, batteries and battery operated tools

Hi Mars, generally the higher the voltage the more powerful the portable tool. But a higher voltage battery can provide a longer run time than a lower...

2 years ago
Forum
DIY
Reply
RE: New Build - Grant Aerona3 10kW - Questions and observations

@ggw True electrical usage requires power monitoring & logging of the ASHP monobloc and any additional circulating pumps, controls, etc. There is ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: A question about voltage, batteries and battery operated tools

In a word 'yes'. Battery powered portable tools are designed to work only at their specified voltage. Most portable tools will accept only the correct...

2 years ago
Forum
DIY
Reply
RE: New Build - Grant Aerona3 10kW - Questions and observations

@ggw we have the heating running about 17hrs a day, on early morning around 4.30am, off abound 9.30pm. 1.25 hours in the middle of the day set of HW. ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Build - Grant Aerona3 10kW - Questions and observations

We have a grant pre-plumb cylinder with digital thermostat. Thermostat reading is all over the place, still giving us hot water at 45degC when the the...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Crossed flow and return

@iaack hi again. The flow sensor is external on the system hot water cylinder on Samsung Gen6, not internal to the monobloc, so it's possible to have ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Page 27 / 42
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