City Multi PURY-P250YMF-C doesn't work properly

[tgoulis]

Is it possible the poor performance on heating to be due to addresses assigned to the components of the system? The addresses are assigned as follows: OC:75 BC:69 IC: 37, 38, 39, 40, 41, 42.

[install monkey]

address - wont be the issue- any fault codes on the controller or outdoor unit??
is this a new installation or a few yrs old
dirty filters on indoors
whats your running pressures and whats the max compressor frequency?

[macca33]

they don't heat very well if they are overcharged at all I have found. Re measure the pipework and weigh the gas charged. It may be a good idea to follow the standard address system in the future to aid fault finding.

[install monkey]

as long as the ports are correctly addressed then no dramas, also whats the capacity of indoors compared to outdoor? (indexation)

[AbsoluteWDJ]

Is it possible the poor performance on heating to be due to addresses assigned to the components of the system? The addresses are assigned as follows: OC:75 BC:69 IC: 37, 38, 39, 40, 41, 42.

I'd expect the outdoor to be addressed 87 and BC to 88 if the indoors are 37, 38, 39, 40, 41, 42. Your addressing says there are more than one system to me. Are you working with the right indoors to outdoors?

[martinw58]

try shutting some units down and see the running unit give more heat if so pos short of gas

[tgoulis]

The ptoblem thay I'm facing is that some IC's don't provide heat. I must admit though, that the system is in service since 2004. The pressusres seem within normal ranges. How can someone read the values of the sensors? Is there any software tool that enables us to connect to main board?
Thank all of you for the responses.

[install monkey]

http://www.mediafire.com/view/f4dvne1pbek3h96/puhy200ymfc(2).pdf
click on link for service manual
on the outdoor unit sw1 dipswitches set in different binary settings will give dispalys of target comp freq , thermistor temps, lev positions,indoor fcu demand- cheaper than buyng the kit to hook up to the m net

[The Viking]

First thing to check is the solenoids in the BC box(es)

:cool: