Service Manual - KXL DCI
13-25
13.3.3
Outdoor Unit Diagnostics
No
Problem
5 4 3 2 1
1
OCT is disconnected
0 0 0 0 1
2
OCT is shorted
0 0 0 1 0
3
CTT is disconnected
0 0 0 1 1
4
CTT is shorted
0 0 1 0 0
5
HST is disconnected (when enabled)
0 0 1 0 1
6
HST is shorted (when enabled)
0 0 1 1 0
7
OAT is disconnected (when enabled)
0 0 1 1 1
8
OAT is shorted (when enabled)
0 1 0 0 0
9
TSUC is disconnected (when enabled)
0 1 0 0 1
10 TSUC is shorted (when enabled)
0 1 0 1 0
11 IPM Fault
0 1 0 1 1
12 Bad EEPROM
0 1 1 0 0
13
DC under voltage
0 1 1 0 1
14
DC over voltage
0 1 1 1 0
15
AC under voltage
0 1 1 1 1
16 Indoor / Outdoor unit Communication
mismatch
1 0 0 0 0
17
No Communication
1 0 0 0 1
18
Reserved
1 0 0 1 0
20 Heat sink Over Heating
1 0 1 0 0
21 Deicing
1 0 1 0 1
22 Compressor Over Heating
1 0 1 1 0
23 Compressor Over Current
1 0 1 1 1
24 No OFAN Feedback
1 1 0 0 0
25 OFAN locked
1 1 0 0 1
26 Compressor Lock
1 1 0 1 0
27 Bad Communication
1 1 0 1 1
