Part
6
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Diagnosis and Troubleshooting
The specific error codes L0, L1, L2, L5, L7 and LA can also be obtained from the inverter module LED indicators. If an
inverter module error has occurred, LED2(green) is continuously on and LED1(red) flashes.
Figure 6-2.4: 8-12HP LED indicators LED1 and LED2 on inverter module
Figure 6-2.5: 14-18HP LED indicators LED1 and LED2 on inverter module
Table 5-3.2: Errors indicated on LED1
Flashes 8 times and stops for 1 second, then repeats
L0 - Inverter compressor module error
Flashes 9 times and stops for 1 second, then repeats
L1 - DC bus low voltage protection
Flashes 10 times and stops for 1 second, then repeats
L2 - DC bus high voltage protection
Flashes 13 times and stops for 1 second, then repeats
L5 - Zero speed protection
Flashes 15 times and stops for 1 second, then repeats
L7 - Phase sequence error
Flashes 11 times and stops for 1 second, then repeats
LA - PED software verification failed
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