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3.4 Troubleshooting for Typical Faults of Inverter ASGE-36AI-3, ASGE-42AI-3
The model of mainboard used in this system is as follows:
ZB WZ863
Fig7
ZB Z814B
Fig8
ZB WZ814A Fig9
3.4.1 WZ863
PCB Fault Code
Table 3
WZ863
PCB LED Indication Code
WZ863
Item
PCB
LED Indication
Display
Indication
LED1
(red)
LED2
(yellow)
LED3
(green)
11 Normal Mode
Blink
OFF
OFF
E5
IPM Module Protection
Blink
OFF
Blink
E5
Voltage Protection
Blink
Blink
OFF
E5
Compressor Current Protection
Blink
Blink
Blink
E5
Communication Fault from Inverter
to Main Controller
OFF
Blink
Blink
E5
Loss-of-Synchronization Protection
Blink
ON
ON
E5
Current Sensor Fault
Blink
Blink
ON
E5
Sensor Connection Protection
ON
ON
Blink
E5
Radiator Fin Overheat Protection
ON
Blink
ON
E5
Radiator Fin Sensor Fault
OFF
Blink
ON
E5
Wrong Mode
ON
OFF
Blink
E5
3.4.2 Troubleshooting for Inverter Faults
1)
2)
3)
4)
IPM Module Protection: This protection occurs as long as it is detected that the FO
of IPM module has low level. It is non-restorable if this protection occurs six times
successively in 1 hour. In this case, you must de-energize, discharge completely
and re-energize before you can eliminate this fault.
Voltage Protection: When there is no other fault 2s after energization, it is detected
for 2ms successively that the bus voltage is higher than 725V or lower than 375V. It
is non-restorable if this protection occurs six times successively in 1 hour. In this
case, you must de-energize, discharge completely and re-energize before you can
eliminate this fault.
Compressor Current Protection: When there is no other fault 2s after energization, it
is detected for 600us successively that the transient current of compressor is higher
than 48A. It is non-restorable if this protection occurs six times successively in 1
hour. In this case, you must de-energize, discharge completely and re-energize
before you can eliminate this fault.
Communication Fault from Inverter to Main Controller: The inverter cannot
communicate normally with the main controller for 12s successively. This fault can