Airwell YBZ214, Service Manual

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TROUBLESHOOTING
13-2 Service Manual – YBZ DCI 1-A.1 GB
13.1.3 Fault Code display from ODU
The ODU will show the active fault code by its LED1, LED2, LED3 and LED4.
When more than one active fault codes exist, each fault code will display in 5s interval.
□ – LED OFF, ■ – LED ON,
☆
– LED Blinking
No. Fault code LED1 LED2 LED3 LED4
0 STBY □ □ □ □
1 Operation (COMP ON) ■ □ □ □
2 Stop for compressor OLP protection
☆
□ □ □
3 Stop for compressor over heating protection □ ■ □ □
4 Stop for ODU over heating protection ■ ■ □ □
5 Stop for HP switch protection ☆ ■ □ □
6 Stop for AC over current protection □ ☆ □ □
7 IPM protection ■
☆
□ □
8 IPM overheating protection ☆ ☆ □ □
9 PFC protection □ □ ■ □
10 Stop for DC over current protection ■ □ ■ □
11 DC over Voltage protection
☆
□ ■ □
12 DC under Voltage protection □ ■ ■ □
13 Compressor startup failure ■ ■ ■ □
14 Desynchronizing of compressor ☆ ■ ■ □
15 Lack phase protection of compressor □
☆
■ □
16 Compressor phase current detection problem ■ ☆ ■ □
17 EEPROM failure ☆ ☆ ■ □
18 DC power circuit short □ □ ☆ □
19 Deicing ■ □
☆
□
20 Oil return
☆
□
☆
□
21 Compressor Stop Rise □ ■ ☆ □
22 Compressor Hz Down ■ ■ ☆ □
23 Stop Rise/Hz down from IDU-A ☆ ■ ☆ □
24 Stop Rise/Hz down from IDU-B □
☆ ☆
□
25 Stop Rise/Hz down from IDU-C ■ ☆ ☆ □
26 Stop Rise/Hz down from IDU-D ☆ ☆ ☆ □
27 OAT failure □ □ □ ■
28 OCT failure ■ □ □ ■
29 CTT failure ☆ □ □ ■
30 HST failure □ ■ □ ■
31 RLT-A failure ■ ■ □ ■
32 RGT-A failure
☆
■ □ ■
33 RLT-B failure □ ☆ □ ■
34 RGT-B failure ■ ☆ □ ■
35 RLT-C failure
☆ ☆
□ ■