Gree RIO09HP230V1A Installation, Service & Troubleshooting page 17

Basic Functions
3)Heating Mode
Heating Process
When the indoor ambient drops 40 F below the preset temperature, the unit will start the heating cycle. The outdoor
fan, compressor and 4-way valve will operate. The indoor fan will operate in the "Cold Air Prevention" mode in which
the indoor fan will have a 2 minute delay after the call for heating. The indoor evaporator coil temperature must reach
1040 F before the indoor fan will start, this will prevent cold air from discharging from the indoor coil. When the indoor
evaporator coil temperature is > 1040 F, the indoor fan will operate at low speed for 1 minute. With 1 minute of operation
or 2 minutes of no fan operation and the indoor evaporator coil temperature is > 1080 F, the indoor fan will operate at its
preset condition.
If the indoor ambient temperature is < 90 F and > 20 F of the preset temperature, the unit will run in its original mode of
operation.
If the compressor is running and the mode is changed from heating to cooling, the compressor will stop, the 4-way valve
will be de-energized 2 minutes later, the outdoor fan will stop after a 1 minute delay.
If the indoor ambient temperature is >= 90 F than the preset temperature, the compressor will stop and the outdoor fan will
stop after a 30 second delay. The indoor fan will continue to operate at its preset mode.
The G10 technology will determine compressor frequency based on ambient temperatures.
All manuals and user guides at all-guides.com
Basic & Protection Functions
+90 F
+ 20 F
Stop heating
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