Panasonic 9kw Aquarea wiring diagram

[Pete]

On 15/12/2020 at 21:44, PeterW said:

It can’t ..! Need to put a stat in or on it somehow. 

Has it got any insertion pockets or is it foamed..??

 

And thats a really crap way to wire a pump

and valve on that picture ..! Trigger the valve with the thermostat, then use the micro switch to trigger the pump otherwise the pump is pushing against a closed valve. Daisy chaining is poor design 

 

Also on the other picture it show a NV thermostat connection and then states 230c switching ..? Which is it ..?

 

 

If you go to the bottom of the first page you will see two wiring drawings. The top one with the ufh wired into the base station is the Secom method and the other one is the Panasonic way

[PeterW]

Sorry they aren’t wiring drawings they are schematics of components. 
 

What have Secom provided ..?  Have they provided the UFH too..? Or the Thermostat ..? 

 

Difficult to diagnose this from a distance as I don’t know what the supplier has provided or has been asked for. 

[Pete]

27 minutes ago, PeterW said:

Sorry they aren’t wiring drawings they are schematics of components. 
 

What have Secom provided ..?  Have they provided the UFH too..? Or the Thermostat ..? 

 

Difficult to diagnose this from a distance as I don’t know what the supplier has provided or has been asked for. 

That is the wiring diagram that Secon sent. Secon provided the tank, heat pump,diverter valve and buffer tank. Wunda for ufh and thermostat for the room is just a generic stat. Will they and get the secon document for you now

[Pete]

32 minutes ago, PeterW said:

Sorry they aren’t wiring drawings they are schematics of components. 
 

What have Secom provided ..?  Have they provided the UFH too..? Or the Thermostat ..? 

 

Difficult to diagnose this from a distance as I don’t know what the supplier has provided or has been asked for. 

 

Secon Panasonic H Series rev1.3.pdf

[Pete]

10 hours ago, Pete said:

 

Secon Panasonic H Series rev1.3.pdf 1.54 MB · 6 downloads

Did you get chance to view the info from Secon @PeterW?

[JulianB]

Morning Pete,

 

How had you gotten on with your install? I'm just about to embark on a similar process with my TCAP (9kW), and thought I'd share my thoughts having read through the latest 2021 Pan installation manual and spoken to Secon Solar. In a nutshell, they have advised to treat the central heating side of the system as two separate parts. On the HP side, we connect the 3 port valve, UVC stat & immersion heater. These will allow the HP to switch between DHW and CH, control to UVC tank temp and water flow temperature for the CH side which feeds into the buffer tank (which is the critical part of this approach).

 

My understanding is that we will then call on that buffer tank 'heat' when needed through the wiring centre; UFH pumps, room stats will be hooked up to this side, and operate as a seperate entity (i.e. no connection to the HP). Presumably when UFH (in my case) fires up as the thermostats 'asks' for heat, this will begin to draw heat off the buffer tank, which in turn sets off the HP to regain that heat in the buffer eventually.

 

Thoughts?

[Nick Laslett]

On 23/11/2020 at 23:37, Nick Laslett said:

I believe that @jack has a Panasonic ASHP with cooling mode engaged. I think you need a service menu code to enable it. 

Panasonic “J” series ASHP. Just for future reference, here is the page from the Service Manual, with the key presses to unlock cooling mode. You need to enter the installer setup first before pressing the buttons. 

Edited May 9, 2024 by Nick Laslett

[Dave Jones]

exactly what i did with our aquera. Home Assistant gives more control over it than the Panasonic app!

[Avendit]

On 09/05/2024 at 18:58, Nick Laslett said:

Panasonic “J” series ASHP. Just for future reference, here is the page from the Service Manual, with the key presses to unlock cooling mode. You need to enter the installer setup first before pressing the buttons. 

 

On 10/05/2024 at 12:06, Dave Jones said:

exactly what i did with our aquera. Home Assistant gives more control over it than the Panasonic app!

I've just tried this but am not getting cooling.  Unit is cooling enabled, I have a target temp of 12 configured as a 'direct' temp, cooling shows up through the whole UI, but it's not firing up to actually deliver cooling.  

 

Does something physical need added as per post 2 or 3 from the start of the thread? Either a terminal short or cooling stat?

 

For heating I'm just using the water temp to call for heat, so no heating stat or connection to the heating system.

[Dave Jones]

6 hours ago, Avendit said:

 

I've just tried this but am not getting cooling.  Unit is cooling enabled, I have a target temp of 12 configured as a 'direct' temp, cooling shows up through the whole UI, but it's not firing up to actually deliver cooling.  

 

Does something physical need added as per post 2 or 3 from the start of the thread? Either a terminal short or cooling stat?

 

For heating I'm just using the water temp to call for heat, so no heating stat or connection to the heating system.

 

As long as cooling is enabled on the controller it should work on the app also. 3 port valve should move etc. Post photo of your controller showing the setup.

 

I use AUTO on the app so whatever temp you dial in it will try to achieve hot or cold doesn't matter.

 

 

 

 

 

 

[Avendit]

41 minutes ago, Dave Jones said:

 

As long as cooling is enabled on the controller it should work on the app also. 3 port valve should move etc. Post photo of your controller showing the setup.

 

I use AUTO on the app so whatever temp you dial in it will try to achieve hot or cold doesn't matter.

 

 

 

 

 

 

(Wouldn't normally have it on at these temps, or set this cool, just did this for the pic).

 

But no activation of the HP and therefore no cooled water ☹️.

[JohnMo]

7 hours ago, Avendit said:

Does something physical need added as per post 2 or 3 from the start of the thread? Either a terminal short or cooling stat?

How do you call for heat when heating? If you are using a buffer the call for heat may come that, if so you need to change it's temperature activation temperature. If you are using house thermostat(s) then you need to wind them above your actual room temperature so they call for heat. If you using radiators don't waste your time. 

 

Just because you have enabled cooling, doesn't mean the heat pump will do anything. It needs a call for heat or cooling to start.

[Avendit]

50 minutes ago, JohnMo said:

How do you call for heat when heating? If you are using a buffer the call for heat may come that, if so you need to change it's temperature activation temperature. If you are using house thermostat(s) then you need to wind them above your actual room temperature so they call for heat. If you using radiators don't waste your time. 

 

Just because you have enabled cooling, doesn't mean the heat pump will do anything. It needs a call for heat or cooling to start.

It has zone & sensor set to use 'room temperature: water sensor' to sense demand so I can use a compensation curve. When heating is 'on' it then keeps its loop at the set temp, which keeps the buffer at the temp, which keeps the heating at the temp. I run open loop in winter, so although I have room controls, they are all set up at 22, and I don't think the (heatmiser) heating system is electrically or logically connected to the HP.

 

That said, I can create 'demand' by setting a room temp up to 30 degrees when it's warm to get the heating water circulating, but the buffer and HP loop stay at 20, despite a target temp of say 12.

 

I'm hoping someone that used the process from the manual above to unlock cooling can confirm if anything else was needed.

[Dave Jones]

post a picture of your controller with cooling turned on, ill see if its similar to mine.

 

 

[Avendit]

2 hours ago, Dave Jones said:

post a picture of your controller with cooling turned on, ill see if its similar to mine.

 

 

Sorry, I thought I had, apologies

[Dave Jones]

i mean the controller not the app

[Avendit]

Well, I don't think I did anything, but that's it running now!  Is there a lower outdoor temp it won't run below? I was playing in the evening last night, so possibly just too cool to kick in.

[Dave Jones]

1 hour ago, Avendit said:

Well, I don't think I did anything, but that's it running now!  Is there a lower outdoor temp it won't run below? I was playing in the evening last night, so possibly just too cool to kick in.

 

just check the delta T 5c range thing is turned off for cooling, you want exacts

[Dave Jones]

15 hours ago, Avendit said:

Well, I don't think I did anything, but that's it running now!  Is there a lower outdoor temp it won't run below? I was playing in the evening last night, so possibly just too cool to kick in.

 

how did the cooling work out ?

[Nick Laslett]

Back in January, I came across a quirk in the default out of the box settings on my Panasonic ASHP, model WH-MDC05J3E5. 

Force defrost is set to manual. See attached photo

 

 

There was some discussion at the HeatGeek Facebook group about this default setting on Panasonic ASHP. 
 

https://www.facebook.com/groups/964431597548688

 

The installer Andy Eaton replied to the question and said it should be set to Auto and did not know why this wasn’t the default with Panasonic. 
 

The “secon-panasonic-h-series-rev1.4” installer guide doesn’t mention this setting. The Panasonic “UK_INSTALLATION_MANUAL_H 2023v3” also doesn’t mention it. 
 

In the Service Manual it gives the following details. 
 

 

I noticed that my ASHP was frozen and rather than trigger the manual defrost, found these settings and set it to Auto. I’m sure there are pro’s and con’s to this option, but I think Auto will work better for my setup, perhaps with a knock on overall efficiency. I believe it is just reversing the warm water back out of the UFH. 
 

I just wanted to capture this somewhere, just in case others noticed their Panasonic freezing up and want it to Auto defrost. 

 

Edited February 8 by Nick Laslett