Gree GMV-VQ680WM/C-X Service Manual page 129

Gree
Whether th e j ump er cap is proper ly
installed at the jump silk screen on the
2.59 "dA" Abnormal Network Address of Indoor Unit
Fault display: wired controller of indoor unit and receiver of indoor unit display
Fault diagnosis:
Check the indoor unit's address chip and IP address. If the address chip cannot be read, the indoor
unit's IP address is 0 and IP addresses conflict, the fault is generated.
Possible causes:
■ Outdoor units' address are assigned incorrectly;
■ Indoor unit's processing error;
■ Abnormal address chip.
Troubleshooting:
"d9" Jumper Ca p Fau lt
main boar d?
Yes
Whether th e j ump er cap is
incorre ctly nu mbe red?
Yes
The detection circuit may
ope rate impro perly
"dA" Abn ormal Network
Add ress of Indoo r Unit
Is it an ind ivid ual proble m?
No
The ma in con trol boa rd of
the outdoor unit may be
abn ormal
GMV6 HR DC Inverter VRF Units Service Manual
No
Install the jumper ca p
No
Replace th e corre sp onding
Yes
Replace th e main control
boa rd
Yes
Replace th e main bo ard of
Yes
Replace th e main control
boa rd
127
jumper cap
indo or unit