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Ecodan software update. Real or scam?

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Air Source Heat Pumps (ASHPs)

Last Post by ASHP-BOBBA 8 months ago

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SKD

(@skd)

Trusted Member Member

Joined: 4 years ago

Posts: 63

07/04/2025 9:13 am

Posted by: @morgan

↑

Just received an email telling me that my Ecodan ASHP requires a software update. Anybody else had this and confirm it isn't a scam of some sort please?

email is from: meu-uk.lesecodanquality@meuk

Hi - last week a Mitsubishi service tech installed a software update to our 11.2kW R32 unit. Apparently it alters the behaviour of the linear expansion valves (located above the accumulator), as a precaution to avoid a potential problem with noise due to oscillation of the valves. We don't have any experience of any such noise problems.

Guessing it could be the same update as the one that I just spotted you had mentioned here.

Mitsubishi were supposed to come on two previous occasions but cancelled at the last minute.

Mitsubishi Ecodan 11.2kW R32 ASHP; Ecodan DHW cylinder; UFH+rads
20x430W Jinko TOPCON Tiger Neo solar; Luxpower 6+4kW hybrid inverter; 20kWh Hanchu ESS LFP battery storage
PHEV; Zappi charger
1997 stone detached house with updated insulation. 140sqm, maintained at 20-22degC 24/7

👍

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Vinz86

(@vinz86)

New Member Member

Joined: 8 months ago

Posts: 1

03/09/2025 10:16 pm

Hi, my ecodan PUZ-WM112VAA is currently running on firmware version 5802, I was told that the latest version is 5809. Is there any ecodan installer that can apply to update to the outside unit?

Or if anyone knows how to install the update please let me know.

I obtained the firmware version number “5802” via running information code “090” in the service menu on ftc6 controller.

thanks

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ASHP-BOBBA

(@ashp-bobba)

Honorable Member Member Professional Installer

Joined: 1 year ago

Posts: 445

04/09/2025 10:06 pm

@vinz86 Contact Mitsubishi and an engineer attends and updates it for you for free. we had this done for a couple of our customers, our customers contacted Mitsi and explained about this high pitch noise and 1 week later the engineer attended and updated the machine.

AAC Group Ltd covering the Kent Area for design, supply and installation of ASHP systems, service and maintenance, diagnostics and repairs.
Professional installer. Book a one-to-one consultation for pre- and post-installation advice, troubleshooting and system optimisation.

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