GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
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Step 4: On the engineering debugging page, click “Startup” button to start engineering debugging;
press “Stoppage” button to pause the engineering debugging;
Step 5: Once it entered the engineering debugging, Portable Commissioning Tool will display
current progress of engineering debugging (step#). As for step 3, 4, 8 and 12,
it needs to click “OK” button to enter into the next step debugging. “Skip” can be selected for step 10.
Detailed information check is available for step 3, 4, 5, 6 and 7.
Step 6: Once engineering debugging is finished, the outdoor unit displays 01 AC or AH OF (or error
code when there’s malfunction; on is displayed when the unit is displayed)
Warning:
After finishing operating this product, the wiring of air conditioner must be resumed.
Otherwise, it may affect the actual operation of user!
3.3.3.3 Operations after Commissioning
Sort and save data. Make detailed records of exceptions and troubleshooting methods during
commissioning for later maintenance and query. At last, make a commissioning report and hand it over
to users.
3.3.3.4 Precautions to Let Users Know after Commissioning
① Let users know where the master IDU is located and stick a label to the master IDU. Tell users
that modes of other IDUs are limited by the mode of master IDU.
② An ODU that has been in power-off status for more than 24 hours should be preheated for more
than eight hours before startup to prevent damaging compressors.
3.4 References for Proper Unit Operation Parameters
●When the system compressor is running, the
normal discharge pipe or top temperature for cooling
is 70-95°C, which is more than 10°C higher than the
saturation temperature corresponding to the system
high-pressure. The normal temperature for heating
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