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Derek M
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Derek M
@derek-m
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Illustrious Member
Joined: Mar 4, 2021
Last seen: Sep 19, 2024
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Topics: 7 / Replies: 4405
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Because fractions of one degree can become important, I would suggest that you start by numbering each of your temperature sensors, fastening all the ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

@crimson The direction of water flow through the larger radiator would appear to be in reverse, which could be part of the problem. My understanding...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

I assume that this water pump is after the LLH and supplying the various heat emitters via the 3 zone valves. My understanding is that a LLH is like...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

@crimson How many water pumps and zone valves are in your system? A schematic diagram would be useful.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Hi Toodles, Sorry if I appear to be jumping in. I started writing a reply to the original post, but before I could complete, my Son called and we ha...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Do you still have the buffer tank? If the heat pump controller is indicating a small DT but the heat emitters are not emitting sufficient thermal en...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

According to the manufacturer's websites, the Stelrad is rated at 1784 Watts and the Eskimo at 1540 Watts, I assume at DT50. What is the calculated ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

How many zones do you have and are they in operation at the same time? The heat pump DT reduces when the thermal energy output becomes greater than ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Have you checked that the valves on both ends of the radiators are correctly adjusted? Any TRV's should be fully open and the lockshield valves should...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Samsung Air Source Heat Pump suddenly started drawing large amounts of current

I would suggest that you get an Electrician to check the wiring for bad connections and to measure the actual current with a clamp meter.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Daikin Altherma noisy heat pump - help and advice needed

@clairelp Don't forget that if you switch off the power to the heat pump the frost protection is no longer operable. Please ensure that the system c...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Vaillant Arotherm Plus PCB Failure

It is difficult to tell from the photo's, but PCB's for outdoor use should be coated with a waterproof lacquer.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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