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@mellow
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Eminent Member
135 kWhs
Joined: Jul 8, 2024
Last seen: Jul 23, 2024
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Topics: 1 / Replies: 13
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RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump

Thanks @allyfish for the pics and info. Spoke to the installer today and will be returning to replace what is probably a faulty thermostat. I will sen...

5 months ago
Forum
Domestic Hot Water & Cylinders
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RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump

As you have a similar system @allyfish just wondering what DHW cylinder thermostat you have. From what you have said yours must be a digital one. Ours...

5 months ago
Forum
Domestic Hot Water & Cylinders
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RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump

Thanks @derek-m - will research volumiser tomorrow.

5 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: ECO4 Scheme and EPC ratings

I did ask when our ECO4 system was installed 2024 "Will we have a new EPC for the property." Our installer said "No" That it was not a requirement und...

5 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
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RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump

@allfyish Reassuring to know a secondary pump may not be needed - can't see one on my system. Have just read the installation manual and it does state...

5 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump

I was more surprised than anyone that I found a solution. Can't take all the credit though as comments here prompted me to try something different - n...

5 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump

Good news - It's working. Following on from comments here it got me thinking. I have set the DHW timer to come on at 1200 hrs and go off at 1300 hrs e...

5 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump

Thanks for your help @johnmo. I will research what a Y and S plan boiler is. Noted about the DHW and Central heating not being on together. On our sys...

5 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump

Just checked and yes today (Saturday) after 1400 hrs the display is "OFF UNTIL 2400" Good point @derek-m, I will look into that. Off topic I k...

5 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump

Stayed up yesterday evening (Friday) to see what happens at midnight. As expected the time displayed went from 2359 to 0000 and the demand for hot wat...

5 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump

Have read your helpful comments AllyFish and now understand what you are saying. My knowledge on this subject has now increased a little. I only hav...

5 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Domestic hot water timer doing crazy things on my Grant Aerona3 10kW air source heat pump

Thanks AllyFish for your help. It will take me a while to read through and understand. The engineer has cleared everything in the programmer except fo...

5 months ago
Forum
Domestic Hot Water & Cylinders
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