205
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-RC series
Diagnosis
Troubleshooting
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;
3. Abnormity confirmation
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 electrical box wiring is
correct, the fan wire is 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 site by after-sales
personnel.
Rectify on site by after-sales
personnel.
Replace fan motor
Check the capacitor
board voltage
Detect by exclusion.
Y
Y
Y
Y
N
N
N
N
N
Summary of Contents for MRV 5-RC AB052MAERA
Page 1: ...MRV 5 RC Service Manual SYJS 03 2019REV A Edition 2019 03 ...
Page 3: ......
Page 55: ...52 AV08 10 12 14IMVURA 4 Center of gravity x X 347 9587 y 471 5454 z 725 6683 y z ...
Page 56: ...53 AV16 18 20 22IMVURA x X 650 5962 y 380 7255 z 706 5342 y z ...
Page 106: ...103 2 Dimension 4 19 200 60 25 25 25 249 108 232 84 69 388 73 82 65 103 177 4 44 4 35 277 ...
Page 116: ...113 2 Preparation before installation ...
Page 162: ...159 One by one valve box PCB code 0151800186A 2 Valve box PCB photo and dip switch setting ...
Page 165: ...162 One by four valve box PCB code 0151800466 ...