Gree HOME GMV [77/367] 低风档

Gree HOME GMV [77/367] 低风档
Dc Inverter VRF plus Water Heater Solution Service Manual CONTROL
73
If all the indoor units’ temperatures of a unit are up to temperature spot, then the capacity needs is o. the outdoor
unit will stop the compressor, and all the indoor electromagnetic expansion valve will be closed.
Indoor Fan Action
When the indoor unit is opened and the fan is not set at automatic fan speed, the indoor fan will unceasingly
run at the set speed regardless of the capacity requirement is 0 or not.
When the indoor fan is set at automatic fan speed, the fan will determine the fan according to the changes of
indoor ambient temperature, shown as the following figure:
+1 +2 +3
+4
室内设定温度
低风档
中风档
高风档
室内环境温度
制冷自动风速
(通用)
+1 +2 +3
+4
室内设定温度
低风档
中风档
高风档
室内环境温度
制冷自动风速
(菱格风)
Automatic fan speed switching will be detected every 30 seconds.
If the indoor fan is closed at first, the fan will be forced to run at high speed for 8s after start-up, then changed to
setting speed.
Blowing Residual Cold Air Control
When the indoor unit is turned off, the fan will run for 0-60 seconds at the setting speed or automatic speed
When the capacity requirement of indoor unit is 0, the electronic expansion valve of indoor unit will be closed, and
then the fan will unceasingly run at the setting speed or automatic speed.
2) Dry Operation
When the units work under dry mode, the indoor fan could only work at low speed (no matter what speed is set). All
other actions are the same with cooling operation. Please refer to cooling operation.
室内设定温度
+1-1室内环境温度
低风档
If the indoor fan is closed at first, the fan will be forced to run at high fan for 8s after start-up, then changed to
setting speed.
2) Heating Operation
Heating Capacity
Outdoor unit will determine the compressor capacity output according to the capacity requirements of indoor unit.
Indoor unit will determine the opening of indoor electronic expansion valve by the control of outdoor unit, and the
electronic expansion valve should be set once for every 40 seconds.
Temperature Control
Indoor unit will control the temperature by opening and closing of indoor electronic expansion valve (Shown as
the following figure):
When the indoor unit capacity requirement is 0, the electronic expansion valve should be closed;
When the indoor unit of capacity requirement is not 0, the electronic expansion valve should be open.
High
M
ed
i
u
m
Low
Indoor Ambient Temperature
Indoor setting temperature
Automatic cooling fan speed
(Common)
High
Medium
Low
Indoor Ambient Temperature
Indoor setting temperature
Automatic cooling fan speed
(Trendy)
Low
Indoor ambient temperature
Indoor setting temperature

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