Gree FGR20Pd/DNa-X Owner's Manual page 31

Ducted Type Split Air-Conditioner Units(Inverter Series)
——
Progress
04_Confirm
quantity of indoor
units
05_ Internal
communication of
outdoor unit
06/ Corresponding
06_ Component
detection of
outdoor unit
Description of each stage of debugging progress
Debugging code
LED
Display
Display code
status
Display
04/Cb
repeatedly
Display
04/oC
repeatedly
Display
05/C2
repeatedly
Display
05/oC
repeatedly
Display
error code repeatedly
Display
06/oC
repeatedly
Instruction for Code and Operating Method
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.
The quantity of indoor unit is 1.
After confirming the quantity of indoor unit, it will enter the next
Communication error between master control and compressor
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.
Communication between the master control of outdoor unit
and drive is normal.
After displaying once circularly, the system will enter the next
step automatically.
Component error of outdoor unit.
If cooling only unit displays "06", "bE", "06" and "b2" circularly,
please refer to "system cooling and heating function setting"
and set corresponding function item of unit to "nC".
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.
No component error of outdoor unit.
After displaying for 10s circularly, the system will enter the
next step automatically.
26
step 2s later.
drive.