Gree GMV6 DC Inverter VRF Units Service Manual
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09_refrigerant
judgement before
startup
db ON 09 ON U4 ON
The refrigerant in the system is
insufficient. Please charge
refrigerant until the fault
Step 13:
Unit debugging step 10 is “status judgment of main pipeline before starting”.
If the main module displays as below, it indicates the unit is starting the operation for judgment.
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main pipeline before
db ON
10 ON ON ON Starting and operating.
If the unit has detected the abnormal status, the display is as below:
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main pipeline before
db ON 10 ON U6 ON
Main pipeline is abnormal.
At this time, it is necessary to check whether the gas valve and the liquid valve are completely open
or whether the main pipeline is blocked. Once inspection is completed, you can return to the previous
step by pressing SW4 button to re-enter the judgment.
If inspection valve of the unit is normal, the display is as below. The unit will automatically enter into
the next step.
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main pipeline before
db ON 10 ON OC ON
The main pipeline is turned on
normally.
Step 14:
Unit debugging step 11 is “reserved function”.
The main module display is as below. The unit automatically enters into the next step.
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Step 15:
Unit debugging step 12 is “reserved function”.
The master module display is as below. Then the unit automatically enters into the next step.
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LED1 LED2 LED3
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