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Clockworks
@clockworks
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Joined: Jan 22, 2025
Last seen: Aug 18, 2026
Profile Activity
Topics: 4 / Replies: 59
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RE: Ecodan Legionella cycle - immersion heater problem

I think the switching is because the thermostat in the immersion heater element is switching on and off because the water close to the element is reac...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan 6kW - is it "cycling", or normal operation?

Ah, I see. I hadn't seen that option. The title's a bit misleading- "hourly" meaning "for one hour" rather than what I assumed "hour by hour" I've p...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan 6kW - is it "cycling", or normal operation?

@gary Ah, OK. I find that way of doing it more confusing, as it doesn't show the actual time on the horizontal axis. I get your point about matching...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan 6kW - is it "cycling", or normal operation?

@gary Not sure I understand what you are asking for?

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan 6kW - is it "cycling", or normal operation?

Melcloud graph for the last 24 hours. I have the heating scheduled to go off at 20:00 and back on at 23:30. This is because I'm on an EV tariff with c...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan Legionella cycle - immersion heater problem

Ran the Legionella cycle again overnight, with the thermostat on its highest setting. It did eventually reach 60 degrees, after 2 hours. The cycle ...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan Legionella cycle - immersion heater problem

Can't the suppliers, or at least the smart meter network people, tell when local demand is straining the grid by just looking at the supply voltage at...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan Legionella cycle - immersion heater problem

To be fair, the total demand for the period was a maximum of 3kW - the ASHP goes idle while the immersion is running. In contrast, my electric car's...

2 years ago
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Air Source Heat Pumps (ASHPs)
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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...

2 years ago
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Air Source Heat Pumps (ASHPs)
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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...

2 years ago
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Air Source Heat Pumps (ASHPs)
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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...

2 years ago
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Air Source Heat Pumps (ASHPs)
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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...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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