123
Failure code
Outdoor
digital
display tube:
110-4, 5
Indoor wired
controller:
6E
Indoor unit LED status
LED5 Failure description:
Fan motor module hardware over current
20 times
Outdoor unit LED status
LED1 LED2
Normal Normal
1. Model Failure diagnosis and troubleshooting
MRV 5-HR series
DiagnosisT roubleshooting
2. Abnormity detection method
◆
Check if the motor DC +/-
loop is short circuit;
◆
Check fan blade load is
stuck, rotation is smooth;
◆
Check if the compressor
resistance is normal,
◆
Check the motor resistance
is normal;
conditions
Fan built-in drive hardware over-
current
4. Possible causes
◆
The power supply of fan
motor capacitor board is poor
◆
Fan blade load is stuck.
◆
Motor built-in driver is not
good
Check if the supply voltage is normal
Check if e lectrical box wiring i s
correct, the fan wire i s securely
connected
Rotate the fan by hand, check if
rotation is smooth
Left and right fan DC + (red
line), DC- (white line) voltage is
normal DC540V
Is there any other fault 112,114?
Rectify on s ite by a fter-sales
personnel.
Rectify on s ite by a fter-sales
personnel.
Replace fan motor
roticapac eht kcehC
board voltage
Detect by exclusion.
Y
Y
Y
Y
N
N
N
N
N
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