13-7
TROUBLESHOOTING
SM OU12HP 2-E.2 GB
No Problem 54321
1 OCT is disconnected 00001
2 OCT is shorted 00010
3 CTT is disconnected 00011
4 CTT is shorted 00100
5 HST is disconnected (when enabled) 00101
6 HST is shorted (when enabled) 00110
7 OAT is disconnected 00111
8 OAT is shorted 01000
9 OMT is disconnected 01001
10 OMT is shorted 01010
11 IPM Fault 01011
12 Bad EEPROM 01100
13 DC under voltage 01101
14 DC over voltage 01110
15 AC under voltage 01111
16 IDU/ODU Communication mismatch 10000
17 No Communication to IDU 10001
18 No Communication to Driver 10010
19 Current sensor Fault 10011
20 Heat sink Over Heating 10100
21 Deicing 10101
22 Compressor Over Heating 10110
23 Compressor Over Current 10111
24 OFAN_UP error 11000
25 OFAN_DN error 11001
26 Compressor Lock 11010
27 Bad Communication 11011
28 High pressure protection 11100
29 Low pressure protection 11101
30 Reserved 11110
31 Reserved 11111
1 - ON, 0 - OFF
Only one code is shown. Order of priority is lower to the higher number. Diagnostics is continuously
ON as long power is on.
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