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End of Summer Time Reminder to Ecodan owners

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Air Source Heat Pumps (ASHPs)

Last Post by Abernyte 5 months ago

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downfield

(@downfield)

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Joined: 1 year ago

Posts: 120

Topic starter 26/10/2025 10:26 am

Public Service Announcement to all Ecodan owners: don't forget to turn off Summer Time in the Initial Settings menu - the software isn't clever enough to self adjust, unfortunately...

This topic was modified 5 months ago by Mars

Mitsubishi Zubadan 14kW with Mixergy 210l DHW in 220m2 barn property. 24 solar panels = 9kWp with GivEnergy 5.0kW Hybrid inverter and 19kWh GivE batteries. Jaga Strada fan-assisted rads throughout. Landvac vacuum glazing/triple glazed windows.

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Morgan

(@morgan)

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Joined: 5 years ago

Posts: 698

26/10/2025 10:52 am

Posted by: @downfield

↑

Public Service Announcement to all Ecodan owners: don't forget to turn off Summer Time in the Initial Settings menu - the software isn't clever enough to self adjust, unfortunately...

@downfield I have never been aware of that one. Every day is a school day. Now, where to find that setting? 🤔

Retrofitted 11.2kw Mitsubishi Ecodan to new radiators commissioned November 2021.
14 x 500w Monocrystalline solar panels.

2 ESS Smile G3 10.1 batteries.
ESS Smile G3 5kw inverter.

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downfield

(@downfield)

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Topic starter 26/10/2025 12:55 pm

Posted by: @morgan

↑

Now, where to find that setting?

It's the one before the Service Menu.

I only realised a few weeks ago that my system has been on Winter time most of the summer!

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Morgan

(@morgan)

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Joined: 5 years ago

Posts: 698

26/10/2025 1:47 pm

@downfield I found the setting and 'Summer Time' was turned OFF.

Retrofitted 11.2kw Mitsubishi Ecodan to new radiators commissioned November 2021.
14 x 500w Monocrystalline solar panels.

2 ESS Smile G3 10.1 batteries.
ESS Smile G3 5kw inverter.

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Mars

(@editor)

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Joined: 5 years ago

Posts: 4368

26/10/2025 1:51 pm

@downfield, wow that's crazy that it needs a manual change.

Having said that, we have a snazzy robovac at home, and if you change the time to BST and enable "daylight savings" it knocks our schedule out by eight hours. Something that is potentially quite simple, yet apparently isn't.

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Carpenterstation

(@carpenterstation)

Trusted Member Contributor

Joined: 1 year ago

Posts: 46

26/10/2025 3:39 pm

@downfield ditto. Mine is Also set to “off”. But the system time is correct ( and was correct last week)

what does this feature do when “on”?

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Morgan

(@morgan)

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Joined: 5 years ago

Posts: 698

26/10/2025 4:24 pm

Posted by: @carpenterstation

↑

@downfield ditto. Mine is Also set to “off”. But the system time is correct ( and was correct last week)

what does this feature do when “on”?

@carpenterstation good question because, like you, my clock was also correct.

Retrofitted 11.2kw Mitsubishi Ecodan to new radiators commissioned November 2021.
14 x 500w Monocrystalline solar panels.

2 ESS Smile G3 10.1 batteries.
ESS Smile G3 5kw inverter.

ReplyQuote

downfield

(@downfield)

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Posts: 120

Topic starter 26/10/2025 5:18 pm

It advances the system time by one hour. The time is shown in the display.

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Morgan

(@morgan)

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Joined: 5 years ago

Posts: 698

26/10/2025 5:42 pm

Posted by: @downfield

↑

It advances the system time by one hour. The time is shown in the display.

@downfield my summer time setting has been, and is, set to off but my clock has always been correct. TBH it isn’t something I’ve ever considered. I just assumed that, like this iPad I’m typing on, the clock automatically adjusted itself.

Retrofitted 11.2kw Mitsubishi Ecodan to new radiators commissioned November 2021.
14 x 500w Monocrystalline solar panels.

2 ESS Smile G3 10.1 batteries.
ESS Smile G3 5kw inverter.

ReplyQuote

downfield

(@downfield)

Estimable Member Member

Joined: 1 year ago

Posts: 120

Topic starter 26/10/2025 7:27 pm

@morgan did the system time change last night? if so you may have a different version to me - I think I am on FTC5.

But my time was incorrect this morning until I turned summertime to off.

Having said that, if you use MELcloud timing control rather than the FTC scheduler, it may not matter?

I am still unclear about the interaction between the settings on the wall display and MELcloud, when it comes to time schedules.

I use MELcloud for scheduling, but sometimes the MELcloud schedules are completely ignored while at others (thankfully most of the time) they are obeyed by the system.

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Morgan

(@morgan)

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Joined: 5 years ago

Posts: 698

27/10/2025 7:13 am

@downfield I don't think it did change. My ASHP is being serviced on 11th November. Hopefully, I will remember to ask the guy to explain what 'Summer Time' is and does.

Retrofitted 11.2kw Mitsubishi Ecodan to new radiators commissioned November 2021.
14 x 500w Monocrystalline solar panels.

2 ESS Smile G3 10.1 batteries.
ESS Smile G3 5kw inverter.

ReplyQuote