292424-XIM-A-0307
14 Unitary Products Group
FIGURE 6 - UNIT CONTROL BOARD
TABLE 9: UNIT CONTROL BOARD FLASH CODES
FLASH CODE DESCRIPTION
GREEN
LED
16
RED
LED
8
RED
LED
4
RED
LED
2
RED
LED
1
On Steady This is a Control Failure - - - - -
1 Flash Not Applicable - - - - -
2 Flashes
Control waiting ASCD
1
1.
Non-alarm condition.
Flashing Off Off On Off
3 Flashes HPS1 Compressor Lockout Off Off Off On On
4 Flashes Not Applicable Off Off On Off Off
5 Flashes LPS1 Compressor Lockout Off Off On Off On
6 Flashes Not Applicable Off Off On On Off
7 Flashes FS1 Compressor Lockout Off Off On On On
8 Flashes Not Applicable Off On Off Off Off
10 Flashes
Compressors Locked Out on Low Outdoor Air Temperature
1
Flashing On Off On Off
12 Flashes Unit Locked Out due to Fan Overload Switch Failure Off On On Off Off
13 Flashes
Compressor Held Off due to Low Voltage
1
Flashing On On Off On
14 Flashes EEPROM Storage Failure Off On On On Off
OFF No Power or Control Failure Off Off Off Off Off
Check
Alarm
History
Reset All
ASCDs for
One Cycle
Non Alarm
Condition Green
LED Flashing
Current Alarm
Flashed
Red LED
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