Gree UM600PH/A-M, Service Manual

Page: 79 / 121

GREE Duct type Ducted Type Split Air-Conditioner Units
79
Description of each stage of debugging progress
—— Debugging code
Instruction for Code and Operating Method
Progress
LED
Display code
Display
status
02_Address
allocation
02 Bllink The system is allocating address, which might takes 10s.
02/L7
Display
repeatedly
No master indoor unit.
It will display for 1min continuously. The user can set master
through debugging the software within 1min. If no master unit is set
manually within 1min, the system will set the indoor unit with the
smallest IP address automatically as the master indoor unit.
02/oC
Display
repeatedly
Address allocation of the system is complete with master indoor
unit.
After displaying once circularly, the system will enter the next step
automatically.
03_ Confirm
quantity of outdoor
units
03/ quantity of
modules in the
system
Display
repeatedly
Confirmation of quantity of modules in the system.
To differentiate from the debugging step, the QTY of module will
display only 1-digit on the right.
03/oC
Display
repeatedly
After 10S, all the nixie tubes of modules will display “03” and “oC”,
after displaying once circularly, the system will enter the next step
automatically.
04_Confirm
quantity of indoor
units
04/Cb
Display
repeatedly
The quantity of indoor unit is more than 1.
The system shall not connect more than 1 indoor unit, after
inspection, please redebug for confirmation.
04/oC
Display
repeatedly
The quantity of indoor unit is 1.
After confirming the quantity of indoor unit, it will enter the next step
2s later.
05_ Internal
communication of
outdoor unit
05/C2
Display
repeatedly
Communication error between master control and compressor
drive.
Please check the connection between the main board of outdoor
unit and communication cord of drive board, after eliminating the
errors, enter the next step. If the ODU should be powered off for
troubleshooting, after re-energizing the unit, please conduct
debugging from the above 01 step.
05/oC
Display
repeatedly
Communication between the master control of outdoor unit and
drive is normal.
After displaying once circularly, the system will enter the next step
automatically.
06_ Component
detection of outdoor
unit
06/
Corresponding
error code
Display
repeatedly
Component error of outdoor unit.
After eliminating all the errors, enter the next step automatically, if the
ODU should be powered off for troubleshooting, after re-energizing the
unit, please conduct debugging from the above 01 step.
06/oC
Display
repeatedly
No component error of outdoor unit.
After displaying for 10s circularly, the system will enter the next step
automatically.
07_ Component
inspection of indoor
unit
07/
Corresponding
error code
Display
repeatedly
Component error of indoor unit.
After eliminating all the errors, enter the next step automatically, if
the ODU should be powered off for troubleshooting, after
re-energizing the unit, please conduct debugging from the above 01
step.
07/oC
Display
repeatedly
No component error of indoor unit.
After displaying for 5s circularly, the system will enter the next step
automatically.