Unit Control Board Flash Codes; Unit Control Board - York ZF 180 Series Installation Manual

1061903-XIM-A-0713
Table 31: 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 Cool-
11 Flashes
1
ing
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
1. Non-alarm condition.
Check
Alarm
History
Reset All ASCDs
For One Cycle
Non Alarm Condition
Green LED Flashing
Current Alarm
Flashed Red LED
Figure 32: Unit Control Board
48
DESCRIPTION
1
1
GREEN RED
LED LED
16
-
-
Flashing
Off Off
Off Off
Off
Off Off
Off
Off On
Off On
1
Flashing On
Flashing On
Off On
Flashing On
Off On
Off Off
RED RED
LED LED
8 4 2
- - -
- - -
Off Off On
Off On
On Off
Off On Off
On On
Off On On
Off Off
Off Off
Off On
Off On
On Off
On Off
On On
Off Off
Johnson Controls Unitary Products
RED
LED
1
-
-
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
Off