Gree HOME GMV Инструкция по эксплуатации онлайн [75/367] 48267

Gree HOME GMV Инструкция по эксплуатации онлайн [75/367] 48267
Dc Inverter VRF plus Water Heater Solution Service Manual CONTROL
71
the lowest value is 5 HZ.
Detect discharge pressure after 3min startup of the unit. Fan frequency is adjusted every 2 periods according
to the average value of discharge pressure so that the pressure can be restrained within optimized range. If the
pressure is higher than the setting range, the frequency of outdoor fan will increase; If the pressure is lower than
the setting range, the frequency of outdoor fan will decrease.
4) Defrosting Control
Conditions of Startup of Defrosting:
when the heating is running for continuous 50min;when the temp of middle temp sensor and outdoor temp are
lower than the curve which is shown in the picture for continuous 120s.
Middle
Temp
Sensor
Outdoor Dry-bulb Temp
or the outdoor ambient temp is lower than -6℃;and the heating is running for continuous 2 hours;
Conditions of Stop of Defrosting:
The temp of coil of outdoor unit is higher than 15 or defrosting is running for 10min.
Defrosting:
Defrosting is realized by switching the 4-way valve to cooling mode
Sequency chart of defrosting is as follows:

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