213
Failure code
Outdoor
digital
display tube:
117- 4, 5
Indoor wired
controller:
75
Indoor unit LED status
LED5
Failure description:
Fan motor module software 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 fan motor
strong electricity wire is
insecurely connected;
◆
Fan rotation is smooth
◆
Check if the module is
normal, if short circuit
3. Abnormity confirmation
conditions
Double fan: fan running current
value over 5.5A, single fan: fan
running current value over 6A
4. Possible causes
◆
Fan motor is poor
◆
Fan blade overload
Check if the supply voltage is normal.
Check if the electrical
cabinet is wired correctly,
the variable frequency
board and module board
is connected securely.
Motor rotation is smooth, the sound
is normal
Running current value is normal
Replace and compare the
neighboring electrical cabinet
by exclusion method
Readjust wiring and fixing method in
accordance with the circuit diagram.
Adjust the supply voltage.
Replace the fan motor
Y
Y
Y
Y
N
N
N
N
Replace the fan motor
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 ...