York R-410A, Technical & Service Manual, Page: 298 / 385

Controller
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Flash OFF OFF OFF 24 11.2 kW
Flash OFF OFF Flash 25 14.0 kW
Flash OFF Flash OFF 26
Flash OFF Flash Flash 27
Flash Flash OFF OFF 28
Flash Flash OFF Flash 29
Flash Flash Flash OFF 30
Flash Flash Flash Flash 31
4. SW1 (0-15 OR 16-31)
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Number Setting Switch (for outdoor)
Match with NUM_S, when switch down, number setting range is 0-15; when switch up,
number setting range is 16-31.
5. ENC1 (POWER_S)
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Power Setting
The range is 0~9. In normal case, the power setting of indoor units has been set well.
The matching capacity of indoor units is as follows:
Power setting Capacity of indoor units (kW)
0 2.2
1 2.8
2 3.6
3 4.5
4 5.6
5 7.1
6 8.0
7 9.0
8 11.2
9 14.0
6. CN9
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Communication port (COM)
The indoor and outdoor units adopt RS-485 communication standard. P and Q are for
communication and have polarity. E is shield layer and is connected to +5V on the display board
to strengthen the anti-jamming ability of the communication wire. When the indoor and outdoor
units can’t communicate for 1 minute, it will display communication malfunction.