173
In the case of no fault, if the system does not meet the start-up conditions, the host digital display standby code:
555.0
Indoor machine capacity beyond the
outdoor machine capacity of 150% or
less than 50%, standby system
Indoor machine capacity beyond the outdoor
machine capacity of 150% or less than 50%, standby
system
resumable
555.1 26 degree standby
Ambient temperature above 26 degrees indoor heat
can not boot
555.2 Low pressure (gas) standby
Refrigeration Ps<0.23Mpa or heating Ps<0.12Mpa
start, system standby
555.3 54 degrees above the cooling outdoor
machine is not running
54 degrees above the cooling outdoor machine is
not running
555.5 Power restriction
Power inhibit setting maximum capacity output is 0%
555.6 Password lock
Password lock system to set the maximum operating
time to the system standby
555.8 No trial running
No trial running
Valve box failure code list
Failure
code
Failure code definition
Judgment method
Remarks
5
Valve box EEPROM date failure
Un-resumable
6
Communication between valve
box and outdoor failure
No communication with the outdoor
unit for continuous 120 seconds
Resumable
7
Communication between valve
box and indoor failure
When detecting the connected
indoor units, the indoor unit quantity
is zero.
Resumable
9
Valve box repeated address
Resumable
20
Outdoor corresponding failure
Resumable
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 ...