Unit Control Board; Unit Control Board Flash Codes; Yim-C - York Predator BP078 Installation Manual

127421-YIM-C-0606

TABLE 55: UNIT CONTROL BOARD FLASH CODES
FLASH CODE
On Steady This is a Control Failure
1 Flash Not Applicable
2 Flashes
Control waiting ASCD
3 Flashes HPS1 Compressor Lockout
4 Flashes HPS2 Compressor Lockout
5 Flashes LPS1 Compressor Lockout
6 Flashes LPS2 Compressor Lockout
7 Flashes FS1 Compressor Lockout
8 Flashes FS2 Compressor Lockout
9 Flashes Ignition Control Locked Out / Ignition Control Failure
10 Flashes
Compressors Locked Out on Low Outdoor Air Temperature
Compressors locked out because the Economizer is using free
11 Flashes
*
Cooling
12 Flashes Unit Locked Out due to Fan Overload Switch Failure
13 Flashes
Compressor Held Off due to Low Voltage
14 Flashes EEPROM Storage Failure
OFF No Power or Control Failure
*.
Non-alarm condition.
Check
Alarm
History
Reset All
ASCDs for
One Cycle
Non Alarm
Condition Green
LED Flashing
Current Alarm
Flashed
Red LED
FIGURE 25: UNIT CONTROL BOARD
Unitary Products Group
DESCRIPTION
*
*
GREEN RED
LED LED
16 8
- -
- -
Flashing Off
Off Off
Off Off
Off Off
Off Off
Off Off
Off On
Off On
*
Flashing On
Flashing On
Off On
Flashing On
Off On
Off Off
RED RED RED
LED LED LED
4 2 1
- - -
- - -
Off On Off
Off On On
On Off Off
On Off On
On On Off
On On On
Off Off Off
Off Off On
Off On Off
Off On On
On Off Off
On Off On
On On Off
Off Off Off
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