Haier GE APPLIANCES AUH4860ZGDA User Manual

CONNECT SERIES SERVICE MANUAL
31
ENGLISH
Troubleshooting
“P5” Over-Current Protection
Error display:
ODU main board LED display
Error judgment condition and method:
If compressor’s instant current value is higher than
the set current protection value. it will be judged that
compressor over-current occurs and system will shut
down for protection.
Possible causes:
• System load is too much and compressor current is
too large.
• Compressor 3-phase wire connection is out of phase.
• Compressor wire is loose or has bad contact.
• Drive board current sampling circuit element is
damaged or drive chip current sampling AD terminal
is abnormal.
• Compressor is damaged.
“P6” Master Control and Driver Communication
Error
Error display:
ODU main board LED display
Error judgment condition and method:
If there is no other malfunction and the communication
between master control and driver is cut o for 30s,
then it can be judged that the communication between
master control and driver is faulted. System will shut
down for protection.
Possible causes:
• Communication wire between master control and
driver is not well connected, or has bad contact, or is
broken.
• The switch power of drive board is abnormal,
therefore, the 3.3V power voltage is abnormal.
• Communication circuit of the drive board or the
master control board is abnormal.
No
Yes
Yes
Yes
Yes
No
No
Start
PS Compressor over-current protection
Compressor is running at high frequency
and high load. The peak currant has
reached the protection value?
Normal
protection
Reconnnect wires
according to the
correct sequence.
Reconnect wires
or replace the
compressor wires.
Replace the
compressor
Compressor 3-phase wire
connection is correct or not?
Compressor 3-phase
wires are loose or badly
connected?
Replace the drive
board
Error still exists?
Yes
Yes
No
Start
P6 Master control and driver
communication error
The communication wire
between master control and
driver is not connected, or is
badly connected, or broken?
Reconnect or
replace the
communication
wire.
Replace the master
control board.
Replace the drive
board
Error still exists?

Haier GE APPLIANCES AUH4860ZGDA Specifications

General

Brand	Haier
Model	GE APPLIANCES AUH4860ZGDA
Category	Heat Pump
Language	English