Addressing City Multi controller

[Daz man]

Hi all,

I'm in the process of adding an additional indoor Mitsubishi cassette unit (PLFYP40VBM-E) to an existing City Multi R410A system.

I've checked running index, capacity etc and also confirmed with Mitsubishi technical if do-able, which it is. The only discrepancy is the existing cassettes are PLFYP40VAM-E and the new ones are - as above. Mitsi don't make the VAM-E's anymore.

My question is - how do I address the new cassette? I've spliced into the MNET 'daisy chain' cabling M1 & M2 off the existing indoor units which is pretty self explanatory, but then am I right in saying I also come off M1 & M2 for the new MNET controller? but how do I then address the controller?

I've come off branch number 2 of the 10 way BC box, as that was not used.

Do I address at the bc box, indoor cassette and then the controller?

Thanks all. Help will be great. Always learning.

[install monkey]

address on the new remote, and if theres a g50 add it onto the system and assign the remote address onto it
then do a full reboot
on the new indoor unit assign the rotary switch for new address 10's and 1's then the third rotary switch is for the port address- easiest way to find indoor addresses is if theres a g50 or mj103 or similar- press and hold up,down and check refrigerant moniter- see all the addresses on each system

[Daz man]

Cheers for that. There is no G50 or equivalent on site. Can I find the addresses on any of the indoor PARF27 controllers?

The third rotary switch will be easy to sort then, as it's piped off branch 2 of the BS box.

What do you mean 10's 1's?

So nothing needs to be altered in the BS box then?

[install monkey]

no need to touch the bc box, 10's and 1's 2 rotary switches to set the indoor address, easiest to check other indoors to see all the addresses, then go up from the highest address, the remotes are addressed with a 1 in front- of the indoor address ie indoor no 16 remote address 116