Gree GMV MTAC VRF Series, Руководство по обслуживанию

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Gree GMV MTAC VRF for North America
80
Description of each stage of debugging progress
—
Debugging code
Code meaning and operation method
Progress
LED
Code Display status
07_ Detect
indoor
components
07/XX/error
code
Display circularly
System detects error on indoor components. XX means the
project code of IDU with error, e.g. no.1 IDU has d5 and d6
errors, meanwhile no.3 IDU displays error d6 and d7, then
the nixie tube will display “07”, “01”, “d5”, “d6”and “03”
circularly. After errors are eliminated, system will start next
step automatically. If power is off during troubleshooting,
then restart debugging from progress 01 after power is on.
07/XXXX/error
code
Display circularly
If errors occur in IDU which the project code is ≥ 3 -digit
number, then it will display the 2 big digits of project code
first, then the 2 small digits, finally the error code, e.g.: L1
error occurs in no.101 IDU, then the nixie tube will display
“01”, “01” and “L1” circularly. Display method is the same for
several IDUs with multiple errors.
07/oC Display circularly No error on components of IDU. 5s later, next step starts.
08_ Confirm
preheated
compressor
08/U0 Display circularly
Preheat time for compressor is less than 8 hours. Display
will be as in the left until the preheat time reaches 8 hours.
Press main board’s SW3 button to confirm manually that the
preheat time has reached 8 hours. Then start next step
( Note: Compressor may get damaged if it is started without
8 hours of preheat time).
08/oC Display circularly Compressor has been preheated for 8 hours. 2s later, next
step starts.
09_
Refrigerant
judgments
before startup
09/U4 Display circularly
System is lack of refrigerant and display will be as in the left.
Please cut off power of IDU and ODU and check if there is
leakage on pipeline. Solve the leakage problem and
complement refrigerant into the unit. Then connect power
and restart debugging from progress 01 ( Note: Before
re-charging refrigerant, unit must be power off in case
system starts progress 10 automatically).
09/oC Display circularly Refrigerant is normal and unit will display as in the left for
2s.Then next step starts.
10_ Status
judgments of
outdoor valves
before startup
10/on Display circularly
Valves of ODU are being inspected. Compressor will start
operation for 2min or so and then stop. The opening and
closing status of outdoor valves are as below:
10/U6 Display circularly
Outdoor valves are not fully turned on. Press main board’s
SW4 button and display shows “09/OC”. Then check if the
gas and liquid valves of ODU are completely open. After
confirmation, press the SW4 button again. Then
compressor will start running for about 2min to inspect the
status of valves.
10/oC Display circularly Valves status is normal. Unit will display as in the left for 2s
and then start next step.