Unit Control Board Flash Codes - York Sunline Magnum DJ180 Installation Manual

each alarm flash code by approximately 2 seconds. In
all cases, a flashing Green LED will be used to indicate
non-alarm condition.
In some cases, it may be necessary to "zero" the
ASCD for the compressors in order to perform trouble-
TABLE 27: 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 1
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.
64
DESCRIPTION
1
1
shooting. To reset all ASCDs for one cycle, press and
release the UCB TEST/ RESET button once.
Flash codes that do and do not represent alarms are
listed in Table 27.
GREEN RED
LED LED
16
-
-
Flashing Off
Off Off
Off Off
Off Off
Off Off
Off Off
Off On
Off On
Flashing On
1
Flashing On
Off On
Flashing On
Off On
Off Off
284809-YIM-B-0707
RED RED
LED LED
8 4 2
- - -
- - -
Off On
Off On
On Off
On Off
On On
On On
Off Off
Off Off
Off On
Off On
On Off
On Off
On On
Off Off
Unitary Products Group
RED
LED
1
-
-
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
Off