York R-410A, Technical & Service Manual, Page: 312 / 385

Controller
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1) The LCD displays the standby page, 60 air conditioners are in service, of which 28 are
powered on and 32 off.
2)
In the matrix, the big dots of (00, 16+) and (15, 32+) are luminous, and the small dots are not
luminous. It indicates the 32 air conditioners with the addresses from 16 to 47 are powered off.
3)
In the matrix, the big and small dots of (09, 48+) and (12, 48+) are not luminous. It indicates
the four air conditioners with the addresses from 57 to 60 are outside the network.
4)
All other big and small dots in the matrix are luminous. It indicates all other air conditioners
are in the network and powered on.
5)
The address of the air conditioner is sum of the coordinates. For example, the address of
(09, 48+) is 09+48=57.
6)
The centralized controller keypad is locked, and the centralized controller communicates
with the computer normally.
2. Description of the query page
1)
The LCD displays the query page, and the air conditioner with the address of 08 is being
queried. Mode of the air conditioner with the address 01 is: Cooling, strong air, swing on, indoor
temperature 22°C, set temperature 20°C, cooling mode “lock”.
2)
In the matrix, only the big and small black dots at (00, 00+) and (01, 00+) are luminous. It
indicates the in-service and power-on status of the air conditioners with the addresses of 00
and 01.
3)
The centralized controller communicates with the computer normally.