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Prunus
@prunus
Member
Estimable Member
Joined: Apr 6, 2021
Last seen: Sep 18, 2026
Profile Activity
Topics: 6 / Replies: 70
AllTopicsReplies
Topic
Surplus auction: Project CÃœRV 80-250L air source heat pump hot water cylinders - single & wholesale lots
3 weeks ago
Forum
Buy & Sell
Replies: 0
Views: 89
Reply
RE: Debugging my legionella immersion heater

To conclude this story, I hadn't realised that immersion thermostats are a separate replaceable item to the immersion heater itself. I ordered a Coth...

5 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Is the Grant controller a thermostat?

The Aerona 290 is from a different (Chinese) OEM, compared with the Japanese (Chofu) R32 Aerona3. I don't have experience with the R290, or the smart...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Debugging my legionella immersion heater

Well, if that's the right PDF the factory set is supposed to be 75 so in theory it should go up at least that far when cranked up to the max. A bit po...

6 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Debugging my legionella immersion heater

I suppose it could be that 57C is the maximum achievable temperature by the immersion heater, but I thought the point of the adjustment is you could s...

6 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Debugging my legionella immersion heater

I think we're talking at cross purposes here. The above test is with the ASHP completely turned off. The setup is mains -> power meter -> contac...

6 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Debugging my legionella immersion heater

Here is the full setup (I really should tidy that wiring...): Disconnected tank stat at the top pocket, thermistor going to the ASHP in the middle...

6 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Debugging my legionella immersion heater

Also to add, on the original Grant wiring there was a separate tank stat which is in the pocket at the top of the cylinder. I have disconnected this a...

6 months ago
Forum
Domestic Hot Water & Cylinders
Topic
Debugging my legionella immersion heater
6 months ago
Forum
Domestic Hot Water & Cylinders
Replies: 12
Views: 2031
Reply
RE: Noisy Grant Aerona 3 13kW ASHP question

Hmm. When they say the pipes are in the walls, is this all the 22mm of PEX you showed upthread? Do you know where they all go? Roughly how long is the...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Noisy Grant Aerona 3 13kW ASHP question

@heymikey OK, so that rules out a number of things. I would lean towards thinking you do actually have a flow restriction of some kind. If it's not ai...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Noisy Grant Aerona 3 13kW ASHP question

Hello @heymikey, I'm not Cally and I haven't read the whole of this thread, but I did have noise problems with my Grant before I rewired it. So just...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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