Gree GMV-140WL/A-T User Manual page 25

db
db
10_ Status
judgments of
outdoor valves
db
before startup
db
db
12_ Confirm
debugging
startup
db
db
15_ Cooling
debugging
db
db
16_ Heating
debugging
db
17_
Debugging 01
finished
5.2.3 Appendix: Reference of normal operation parameters
No. Debug item
1
2
System
parameters
3
4
On 09 On
On 10 On
On 10 On
On 10 On
On 12 On
On 12 On
On 15 On
On 15 On
On 16 On
On 16 On
On OFF On
Parameter name
Outdoor
temperature
Compressor
discharge temp
ODU
parameters
Defrosting temp
System high
pressure
DC Inverter Multi VRF System User Manual
Refrigerant is normal and unit will display as in the
OC On
left for 2s. Then next step starts.
Valves of ODU are being inspected. Compressor
will start operation for 2min or so and then stop.
ON On
The opening and closing status of outdoor valves
are as below:
Outdoor valves are not fully turned on. Press main
board's SW6 button and display shows "db 09
OC". Then check if the gas and liquid valves of
U6 On ODU are completely open. After confirmation,
press the SW6 button again. Then compressor
will start running for about 2min to inspect the
status of valves.
Valves status is normal. Unit will display as in the
OC On
left for 2s and then start next step.
Ready for units to start debugging. Press main
board's SW7 button to confirm startup of
AP Blink
debugging. 2s later, main board will display as
below:
Startup is confirmed. After displaying for 2s, system
will choose "15_Cooling debugging" or "16_Heating
debugging" according to ambient temperature. If
AE On the project requests to add refrigerant but it is
not complemented before debugging, then
refrigerant can be added in this process
through the L-VALVE.
Debugging for cooling mode. If no malfunction
AC On occurs for 20min when compressor is running, then
system will start progress 17;
Malfunction occurs when debugging for cooling
Error
mode. After all malfunctions are eliminated,
On
code
system will start next step.
Debugging for heating mode. If no malfunction
AH On occurs for 20min when compressor is running, then
system will start progress 17;
Malfunction occurs when debugging for heating
Error
On mode. After all malfunctions are eliminated,
code
system will start next step.
The entire unit has finished debugging and under
OFF On
standby-by condition.
Unit
℃
●When compressor starts, discharge temp in
cool mode is within 70~105℃ and at least 10℃
higher than the high pressure saturation temp;
℃
●As for temp in heat mode, it is within 65~90℃
and at least 10℃ higher than the high pressure
saturation temp.
●In cool mode, defrosting temp is 4~10℃ lower
than system's high pressure value;
℃
●In heat mode, defrosting temp is about 2℃
different from system's low pressure value.
●In cool mode, the normal high pressure value
is within 20℃~55℃. According to the change of
ambient temp and system's operating capacity,
℃
the high pressure value will be 10 ℃ ~30 ℃
higher than ambient temp. The higher ambient
22
Reference
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