Installation manual

Subject to change without notice. Printed in U.S.A. 035-19310-002-B-0504
Copyright © 2004 by Unitary Products Group. All rights reserved. Supersedes: 035-19310-002-A-0204
Unitary 5005 Norman
Products York OK
Group Drive 73069
TABLE 55: UNIT CONTROL BOARD FLASH CODES
Flash Code Description
On Steady
Control Failure - Replace Control
Heart Beat
Normal Operation
1 Flash Not Applicable
2 Flashes
Control waiting ASCD
1
1.
These flash codes do not represent alarms.
3 Flashes
HPS1 - Compressor Lock out
4 Flashes
HPS2 - Compressor Lock out
5 Flashes
LPS1 - Compressor Lock out
6 Flashes LPS2 - Compressor Lock out
7 Flashes
FS1 - Compressor Lock out
8 Flashes
FS2 - Compressor Lock out
9 Flashes
Ignition Control Locked Out/
Ignition Control Failure / Limit Switch Trip / No
Jumper Plug in Heat Section
10 Flashes
Compressors Locked Out On Low
Outdoor Air Temperature
1
11 Flashes
Compressors Locked Out Because The
Economizer Is Using Free Cooling
1
12 Flashes
Fan Overload Switch Trip
13 Flashes
Compressor Held Off Due To Low Voltage
1
14 Flashes EEPROM Storage Failure (Control Failure)
OFF
No Power or Control Failure