Gree GMV6 DC Inverter VRF Units Service Manual
Yes
"Cb" IP Address
Assignment O verflow
Make sure that the number of indoor
and ou tdoor units in the network is less
than or equal to four according to
actual i nstallation condi tions
No
Whether th ere are more tha n
four online ou tdo or u nits in the system? Whether
the communication cables of outdoor units from
other refrigerant systems are connected
to this system?
Is th e problem solve d
after the indoo r and outdoor units
are powered off a nd powered
on again?
Yes
Make sure that the number of indoor
units in the netwo rk is le ss than or
equal to 80 (100) according to a ctual
installation conditions
No
Whether th e number of
online indoor units in the network
exceeds 80 (100)?
Note:
When the number of indoor units is 100, engineering customization is required.
2.43 "d1" Poor Indoor Circuit Board
Fault display: wired controller of indoor unit and receiver of indoor unit display
Fault diagnosis:
Check whether the address chip and memory chip of the indoor unit's main board can be read
properly. If not, the fault is generated.
Possible causes:
■ Abnormal address chip;
■ Abnormal memory chip.
Troubleshooting:
Replace the main control board.
2.44 "d3" Ambient Temperature Sensor Fault
Fault display: wired controller of indoor unit and receiver of indoor unit display
Fault diagnosis:
The temperature sensor detection circuit samples the AD value of temperature sensor and
determines the range of AD value. When the sampled AD value exceeds the limits for 5 consecutive
seconds, the fault is generated.
Possible causes:
■ Poor contact between the ambient temperature sensor and the main board interface;
■ Abnormal ambient temperature sensor;
■ Abnormal detection circuit.
Troubleshooting:
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