Gree GMVVQ1015WM/C-X, Service Manual

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Gree GMV6 HR DC Inverter VRF Units Service Manual
114
2.35 "C6" Alarm on Inconsistent Number of Outdoor Units
Fault display: main board of outdoor unit, wired controller of indoor unit and receiver of indoor unit
display
Fault diagnosis:
The unit detects the number of online outdoor modules in real time. When it detects that the number
of current modules is inconsistent with the number of modules previously commissioned and memorized,
the unit will report the fault and stop working.
Possible causes:
■ Abnormal communication among modul
es;
■ The modules are not powered on.
Troubleshooting:
No
Yes
"C6" Alar m on Inco nsi stent
Number of Ou tdo or Units
Whether all modules are prope rly
ene rgized?
Power on the units
No
Conne ct the commu nica tion
cables proper ly
The ma in con trol boa rd
may be ab normal
Yes
Replace th e main control
boa rd
Yes
Whether th e
commu nicatio n cable s
among all the mo dules a re
connected reliabl y ?
2.36 "C8" Emergency Operation of Compressor
Fault display: main board of outdoor unit displays
Fault diagnosis:
If any compressor is set to emergency operation mode, the main board displays the code during the
operation, indicating that the unit's compressor has entered emergency operation.
Possible causes: --
Troubleshooting: not required.
2.37 "C9" Emergency Operation of Fan
Fault display: main board of outdoor unit displays