13-13
TROUBLESHOOTING
SM PNXDCI 1-A.1 GB
No Problem 54321
1OCT bad 00001
2CTT bad 00010
3HST bad 00011
4OAT bad 00100
5OMT bad 00101
6RGT bad 00110
7 OFAN/Compressor Feedback Loss 00111
8 OFAN- IPM fault 01000
9 OFAN Lock 01001
10 OFAN- Vospd exceeded 01010
11 Compressor- IPM Fault 01011
12 Compressor Lock 01100
13 Compressor- Vospd exceeded 01101
14 Compressor- Foldback 01110
15 DC under voltage 01111
16 DC over voltage 10000
17 AC under voltage 10001
18 No communication A 10010
19 reserved 10011
20 reserved 10100
21 reserved 10101
22 Compressor- Ilegal Speed 10110
23 System Configuration Changed 10111
24 System Configuration Problem 11000
25 Heat sink Over Heating Fault/Protection 11001
26 Deicing Protection 11010
27 Compressor Over Heating Protection 11011
28 System over power Protection 11100
29 Bad EEPROM 11101
30 Not Configured 11110
31 Bad Communication 11111
Notes:
1 - ON, 0 - OFF
Whenever this table is updated, the installation test procedure, and the alarm output function should
be updated.
Only one code is shown.
Order of priority is 1-32. Diagnostics is continuously ON as long as power is on.
Heat Sink Over Heating Protection, Compressor Over Heating Protection, and System Over Power
Protection are declared only whenever in ‘Stop-Compressor’ status.
All faults, except the thermistor faults, will remain at least 10 seconds. This rule comes to serve the
monitoring utilities, in a case the fault is released quickly it will be still shown under the monitoring
utilities.
Thermistor faults are reported only when they are enabled.
When the outdoor unit is in fault (not protection), an in-fault signal is sent to the indoor. When all the
outdoor unit faults are cleared, ‘no-fault’ signal is sent to the indoor.
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