Gree TERRA09HP230V1A Installation, Service & Troubleshooting page 33

System Operation 18,000/24,000 btuh Models, cont.
Basic Functions
5)Auto Mode
Auto Mode Process
Setting the auto mode will run the unit in heat or cool automatically depending on T
1)Operating Parameters
A. If the T ambient >= 790 F the unit will operate in cooling mode. The set temperature is 770 F.
indoor
B. If the T ambient <= 720 F the unit will operate in heat mode. The set temperature is 680 F.
indoor
C. When the T
indoor
for the first time, it will run in Fan mode
D. In auto mode, the cooling frequency will be the same as the cooling only mode and the heating frequency will
be the same as the heating only mode.
2) Protection
A. In cooling operation, protection is the same as the cooling only mode
B. In heating operation, protection is the same as the heating only mode
C. When the indoor ambient temperature changes, the operation mode will be automatically selected. Once started
the compressor will have a 6 minute run time.
Product Introduction
ambient <= 730 F and >= 770 F, the unit will operate in the previous state. If it is energized
ambient
indoor
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