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
