Haier MRV5-H - Page 129

126
Failure code
Outdoor
digital
display tube:
112- 4, 5
Indoor wired
controller:
70
Indoor unit LED status
LED5 Failure description:
Fan motor module radiator temp. too high
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 radiating of the
fan motor aluminum radiator is
good
◆
Check if the fan is good
conditions
Motor built-in IGBT bottom
radiator temperature reaches
95.65 degree;
4. Possible causes
◆
Motor built-in IGBT radiating
poor;
◆
Outdoor fan does not turn or
stuck
Check if outdoor fan can rotate
Check i f the fan rotation i s
smooth
When 112 fault occurs,
whether the motor at high
speed
The motor is overloaded
and check the reason
Check the fan blocked reason
Replace fan motor
Check whether t he o utdoo r
fan stuck, d amaged, adjust t he
replace fan
Y
Y
Y
N
N
N