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430645-YIM-D-0610
22 Johnson Controls Unitary Products
Figure 10: Unit Control Board
Table 11: PD180 thru 240 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
HPS2 Compressor Lockout Off Off On Off Off
5 Flashes
LPS1 Compressor Lockout Off Off On Off On
6 Flashes
LPS2 Compressor Lockout Off Off On On Off
7 Flashes
FS1 Compressor Lockout
2
2. Freeze - stat not applicable.
Off Off On On On
8 Flashes
FS2 Compressor Lockout
2
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 OffOffOffOffOff
Check
Alarm
History
Reset All
ASCDs for
One Cycle
Non Alarm
Condition Green
LED Flashing
Current Alarm
Flashed
Red LED