216
Failure code
Outdoor digital
display tube:
119-1, 2
Indoor wired
controller77
Indoor unit LED status
LED5
Failure description:
Current detecting circuit abnormal of
compressor module
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 current sensor
is reversely connected and U
and W is in reverse direction.
◆
Check if the current sensor
is in reverse direction. (the
arrow on sensor points at the
compressor)
◆
Check if the inverter board is
well.
◆
Check if the current sensor
is well.
3. Abnormity confirmation
conditions
The current detection sensor
of inverter control board
is in abnormal conditions,
disconnected or connected
incorrectly.
4. Possible causes
◆
The inverter board and current
sensor is anti-connected or the
current sensor is in incorrect
direction.
◆
The inverter board or current
sensor is damaged.
Replace the corresponding
control boards on failure unit
with inverter control board
and module driver board
respectively and check if the
control board is in abnormal?
Replace the compressor
on the failure unit to
drive with compressor in
good performance and
check if the compressor
is abnormal?
R e p l a c e t h e a b n o r m a l
compressor.
R e p l a c e t h e a b n o r m a l
inverter control board or
module driver board.
Y
Y
Continued
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 ...