Electra WNG 50 DCI Service Manual page 89

14.2 Checking the refrigeration system
Checking system pressures and other thermodynamic measures should be done when
system is in technician Mode where the system operates as in fixed settings. The
performance curves given in this manual are given for unit performance in Technician mode
when high indoor fan speed is selected.
For entering technician mode check 1.6.
14.3 Diagnostics
14.3.1 Outdoor unit diagnostics
LEDs Indicators – single split only
If any fault exists in the system, it will be shown according to tIf no fault exists in the
system, no fault code will be displayed during normal operation mode, and the status led
will be on while the compressor is enable.he following coding method.
Two LEDs display the system diagnostics on real time as follows:
STATUS LED is blinking 5 times in 5 seconds, and shut off for the next 5 seconds.
FAULT LED will blink during the same 5 seconds according to the following table:
No
1 OCT bad
2 CTT bad
3 HST bad
4 OAT bad
5 OMT bad
6 RGT bad
7 OFAN/Compressor Feedback Loss
8 OFAN- IPM fault
9 OFAN Lock
10 OFAN- Vospd exceeded
11 Compressor- IPM Fault
12 Compressor Lock
13 Compressor- Vospd exceeded
14 Compressor- Foldback
15 DC under voltage
16 DC over voltage
17 AC under voltage
18 No communication A
19 reserved
20 reserved
21 reserved
22 Compressor- Ilegal Speed
23 System Configuration Changed
24 System Configuration Problem
25 Heat sink Over Heating Fault/Protection
26 Deicing Protection
27 Compressor Over Heating Protection
28 System over power Protection
29 Bad EEPROM
30 Not Configured
31 Bad Communication
Notes:
1 - ON, 0 - OFF
1. Whenever this table is updated, the installation test procedure, and the alarm output
function should be updated.
2. Only one code is shown.
Service Manual - WNG 50_60_80 DCI
Problem
Revision Y05-02
CONTENT
TROUBLESHOOTING
5 4 3 2
0 0 0 0
0 0 0 1
0 0 0 1
0 0 1 0
0 0 1 0
0 0 1 1
0 0 1 1
0 1 0 0
0 1 0 0
0 1 0 1
0 1 0 1
0 1 1 0
0 1 1 0
0 1 1 1
0 1 1 1
1 0 0 0
1 0 0 0
1 0 0 1
1 0 0 1
1 0 1 0
1 0 1 0
1 0 1 1
1 0 1 1
1 1 0 0
1 1 0 0
1 1 0 1
1 1 0 1
1 1 1 0
1 1 1 0
1 1 1 1
1 1 1 1
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
14-3