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Clockworks
@clockworks
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Estimable Member
Joined: Jan 22, 2025
Last seen: Apr 26, 2025
Topics: 2 / Replies: 53
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RE: Ecodan Legionella cycle - immersion heater problem

The Mitsubishi controller only allows for setting the Legionella cycle start time in hourly increments. All the other timers/schedules are adjustabl...

3 months ago
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RE: Ecidan Legionella cycle - immersion heater problem

Seems like I can't force it to run a Legionella cycle, and setting it to run at 11:00 daily didn't work, presumably because it knew it had already run...

3 months ago
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RE: Ecidan Legionella cycle - immersion heater problem

Reading the thread linked to, very similar setup to mine. To me, it seems like the installers have made an error by fitting an immersion that will c...

3 months ago
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RE: Ecidan Legionella cycle - immersion heater problem

I've had a closer look at the immersion heater. It seems that this model (Thermowatt RTS 3 ERP) is available in 3 different versions. I managed to fin...

3 months ago
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RE: Ecodan 6kW - is it "cycling", or normal operation?

It has cavity wall insulation, and reasonable loft insulation over most of the rooms. All widows are double-glazed. Windows are quite large, but we ha...

4 months ago
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RE: Ecodan 6kW - is it "cycling", or normal operation?

Thanks for confirming that what I'm seeing is just "how it is" with the design of the Ecodan. It puts my mind a rest to a degree - not perfect, but...

4 months ago
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RE: Ecodan 6kW - is it "cycling", or normal operation?

The graphs I posted yesterday were with all the smart TRVs permanently set to 30 degrees, so the rads were all "open" from about 09:00. This did red...

4 months ago
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RE: Ecodan 6kW - is it "cycling", or normal operation?

Outside temperature as reported by the ASHP sensor during the period of the graphs, 8 or 9 degrees. Yes, 900watts is the consumption. Measured ...

4 months ago
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RE: Ecodan 6kW - is it "cycling", or normal operation?

I've had it running with all the smart TRVs set to 30 degrees since 08:45 this morning, and it's still cycling. Lockshields are set pretty much rig...

4 months ago
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RE: Ecodan 6kW - is it "cycling", or normal operation?

OK, I've set all the TRVs to 30 degrees, permanent, and will see what happens. If it starts getting too hot, I'll reduce the weather curve "offset" ...

4 months ago
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RE: Ecodan 6kW - is it "cycling", or normal operation?

I put all the lockshields back to where they were, and refitted all the TRVs. I had the weather curve set 3 degrees higher to see what happened when i...

4 months ago
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