GMV Heat Recovery DC Inverter VRF
64
If inspection valve of the unit is normal, the display is as below. The unit will automatically enter
into the next step.
—
Meaning
Progress
Code
Display
Display
Code
Display
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.
—
Meaning
Progress
Code
Display
Display
Code
Display
—
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.
—
Debugging code Progress code Status code
Meaning
Progress
LED1 LED2 LED3
Code
Code
12_reserved function db ON 12 ON 01 ON —
Step 16: After the unit debugging method is confirmed, the system automatically selects cooling
or heating mode according to the ambient temperature.
Once cooling/heating mode is selected, the relevant display is as below.
—
Meaning
Progress
Code
Code
13~15_pilot run
stage
db ON
ON AC ON Pilot run of cooling mode
db ON
ON AH ON Pilot run of heating mode
db ON
13/14/
15
ON
nding
error
ON
There’s fault on pilot run stage.
Note: fault module display
db ON
ON J0 ON
There’s fault on pilot run stage.
Note: non-fault module display
db ON
ON U9 ON
Outdoor unit’s pipeline or valve is
abnormal.
db ON
13/14/
15
ON XXXX/U8
ON
The system detected the indoor
unit’s pipeline is abnormal. XXXX
indicates engineering number of
fault indoor unit. 2s later, U8 fault
occurred for No. 100 indoor unit.
LED3 will display as below: 01 (2s
later) 00 (2s later) U8, and it will
display like that circularly.
Note: In the pilot run stage, the unit will display corresponding procedures according to actual
circumstances.
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