Gree GMV-36WL/A-T(U) - Page 92

DC Inverter Side Discharge VRF Ⅱ for North America
90
16_ Heating
debugging
db
On
16
On
AH
On
Debugging for heating
mode. If no malfunction
occurs for 20min when
compressor is running, then
system will start progress
17. If malfunction occurs,
unit will display as below:
db
On
16
On
Error
code
On
Malfunction occurs when
debugging for heating mode.
After all malfunctions are
eliminated, system will start
next step. If power is off
during troubleshooting,
system will start progress 17
automatically when power is
resumed.
17_ Debugging
finished
01
On
OFF
On
OFF
On
The entire unit has finished
debugging and under
standby-by condition.
8.3 Parameters reference value for the normal operation of unit
No.
Debug item
Parameter
name
Unit
Reference
1
System
parame
ters
ODU
parame
ters
Outdoor
temperature
℃
(℉)
——
2
Compressor
discharge
temp
℃
(℉)
When compressor starts, discharge temp in cool
mode is within 70~105℃(158~221℉) and at least
10℃(50℉) higher than the high pressure saturation
temp;
As for temp in heat mode, it is within 65~90℃
(149~194℉) and at least 10℃(50℉) higher than the
high pressure saturation temp.
3
Defrosting
temp
℃
(℉)
In cool mode, defrosting temp is 4~10℃(39~50℉)
lower than system’s high pressure value;
In heat mode, defrosting temp is about 2℃(36℉)
different from system’s low pressure value.
4
System high
pressure
℃
(℉)
In cool mode, the normal high pressure value is
within 20℃~55℃(68~131℉). According to the
change of ambient temp and system’s operating
capacity, the high pressure value will be 10℃~30℃
(50~86℉) higher than ambient temp. The higher
ambient temp is, the smaller temp difference is. If
ambient temp is 25~35℃(77~95℉) in cool mode,
system’s high pressure value will be within 44~53℃
(111~127℉).
In heat mode, if ambient temp is above -5℃(23℉),
system’s high pressure value is within 40~52℃
(104~126℉). If ambient temp is low and many IDUs
are turned on, the high pressure will be lower.
5
System low
pressure
℃
(℉)
When ambient temp in cool mode is 25~35℃(77~95
℉), the low pressure value is 0~8℃(32~46℉).
When ambient temp in heat mode is above -5℃(23
℉), the low pressure value is -15~8℃(5~46℉).
6
Opening
angle of
thermal EXV
PLS
In cool mode, the thermal electronic expansion valve
remains 480PLS.
In heat mode, the adjustable opening angle of EXV is
60~480PLS.