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Mitsu PAR-WT60 Wireless Controller

Air Source Heat Pumps (ASHPs)

Last Post by ASHP-BOBBA 10 months ago

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DavidAlgarve

(@davidalgarve)

Reputable Member Member

Joined: 3 years ago

Posts: 248

Topic starter 26/10/2025 11:43 am [#2547]

It is early days and rather warm weather, but I think that my Wireless Controller is controlling the radiator system, but the 'water tap' touch switch does not seem to have any effect and certainly does not change anything on the screen. However the DHW temperature is showing on MelCloud.

It is not of huge importance because my timed setting for DHW heating is generally sufficient, but it would be interesting to know if say, another dip switch needs to be changed or if the temperature icon on the screen indicates up to set temperature.

I would appreciate any comments from those having a fully working system

342sq m "Upside down" house in Algarve. Portugal
Mitsubishi PUHZ-120YUK 12kW ASHP
12 Solar Panels Growatt Inverter
2 x Growatt 7.5kW Batteries
Fronius EV Charger
Kia e- Niro 64kW

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ASHP-BOBBA

(@ashp-bobba)

Prominent Member Member Professional+

Joined: 2 years ago

Posts: 493

26/10/2025 1:24 pm

@davidalgarve press and hold for a few seconds and it should push the system into a boost hot water mode, tap symbol will be on the screen in a steady image, if the water is at design temp it may not operate.

AAC Group Ltd covering the Kent Area for design, supply and installation of ASHP systems, service and maintenance, diagnostics and repairs.

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ASHP-BOBBA

(@ashp-bobba)

Prominent Member Member Professional+

Joined: 2 years ago

Posts: 493

26/10/2025 1:26 pm

If dip switched correctly and wired correctly and subject to what programme was issues it will 1st for 15mins force the ASHP to rapidly heat the water and then after 15mins bring in the heating element, the system will monitor how long it takes the ASHP to generate heat in the cylinder and bring the element in based on that measure or timed event.

(so many options in the programme though) so all subject to.....

AAC Group Ltd covering the Kent Area for design, supply and installation of ASHP systems, service and maintenance, diagnostics and repairs.

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ASHP-BOBBA

(@ashp-bobba)

Prominent Member Member Professional+

Joined: 2 years ago

Posts: 493