Unit Control Board Flash Codes; Ignition Control Board Flash Codes; Unit Control Board - York ZF036 Installation Manual

826081-XIM-C-0214
Test Reset
Control Board
Button
LED
Figure 23: Unit Control Board
Table 24: Unit Control Board Flash Codes
Flash Code
On Steady Control Failure - Replace Control
Heart Beat Normal Operation
1 Flash Not Applicable
2 Flashes
Control waiting ASCD
3 Flashes HPS1 - Compressor Lock out
44
Last Error
Comm Setup
Button
Button
Description
1
Table 24: Unit Control Board Flash Codes
5 Flashes
LPS1 - Compressor Lock out
7 Flashes
FS1 - Compressor Lock out
Ignition Control Locked Out/
9 Flashes
Ignition Control Failure / Limit Switch Trip / No
Jumper Plug in Heat Section
Compressors Locked Out On Low
10 Flashes
Outdoor Air Temperature
Compressors Locked Out Because The
11 Flashes
Economizer Is Using Free Cooling
13 Flashes
Compressor Held Off Due To Low Voltage
14 Flashes EEPROM Storage Failure (Control Failure)
OFF No Power or Control Failure
1. These flash codes do not represent alarms.
Table 25: Ignition Control Board Flash Codes
Flash Code
Heart Beat
Normal Operation
1 Flash Not Applicable
2 Flashes Pressure / Centrifugal Switch Open with Inducer On
3 Flashes Pressure / Centrifugal Switch Closed with Inducer Off
4 Flashes Not Applicable
5 Flashes
Lock Out From Too Many Flame Losses
6 Flashes
High Temperature Switch Open (Primary or Aux.)
7 Flashes
Rollout Switch Open
8 Flashes
Flame Present With Gas Off
9 Flashes Gas Valve Stuck Off or On
1
1
1
Description
Johnson Controls Unitary Products