CONNECT SERIES SERVICE MANUAL
35
ENGLISH
Troubleshooting
Yes
Yes
No
Yes
Yes
Yes
No
No
Start
Start
H7 Compressor out-of-step protection
GC PFC protection
Compressor 3-phase wire connection is
lack of phase or phased-reversing?
Check whether power grid
voltage is normal?
Connect wires
according to the
phase sequence
Normal
protection
Fasten or
replace the
compressor
phase wires
Replace the
compressor
Replace the
drive board.
Compressor phase wire
connection is bad?
Drive board PFC
is damaged ?
Replace the drive
board
Error still exists?
“H7” Driver Out-of-Step Protection
Error display:
ODU main board LED display
Error judgment condition and method:
The processor cannot detect the compressor rotor
position. The running speed is different that the speed
called for. Either case will stop compressor operation.
Possible causes:
• Compressor 3-phase wire connection is out of phase
or phase-reversed.
• Compressor wiring is out of phase.
• System is blocked, short of refrigerant or compressor
oil.
• Drive board IPM module is damaged.
• Drive board compressor current sampling circuit
element is damaged or drive chip current sampling
AD terminal is abnormal.
• Compressor is damaged.
“HC” PFC Protection
Error display:
ODU main board LED display
Error judgment condition and method:
System shutdown due to drive processor low voltage
malfunction.
Possible causes:
• Power grid voltage is abnormal.
• Drive board PFC module is damaged.
• Drive board IPM module’s 15V power supply is lower
than 13.5V.
• Drive board PWM signal for PFC and the
corresponding element are abnormal.
• Drive board PFC current sampling circuit element is
damaged or drive chip current sampling AD terminal
is abnormal.
Содержание GE Connect Series
Страница 17: ...CONNECT SERIES SERVICE MANUAL 15 ENGLISH Troubleshooting Model AUH4860ZGDA ...
Страница 28: ...CONNECT SERIES SERVICE MANUAL 26 ENGLISH Troubleshooting AUH4860ZGDAA ...
Страница 90: ...CONNECT SERIES SERVICE MANUAL 88 ENGLISH Maintenance AUH4860ZGDA ...
Страница 92: ...CONNECT SERIES SERVICE MANUAL 90 ENGLISH Maintenance IDU Exploded View and Parts Lists UUY24ZGDAA UUY36ZGDAA ...