Gree TERRA09HP230V1A Installation, Service & Troubleshooting page 41

System Operation 18,000/24,000 btuh Models, cont.
Other Controls
11) Display
1. Operational and Mode Display
All the display patterns will display for a time when the power is on, the operation pattern will display in red under standby
status. When the unit is started by the remote controller, the indication pattern will light and display the current operation.
You can turn off the display by pressing the "Light" button on the remote controller.
2. Indoor Unit LED Display
Depending on the settings on the remote controller, the indoor unit LED display may display the current temperature set-
point and indoor ambient temperature. "H1" will be displayed during the defrost cycle.
12)Drying Function
The indoor fan will run for 10 minutes after the unit is turned off (cooling or dry modes only) to ensure that additional
moisture is removed from the coil.
13)Power-Off Memory Function
Upon a power failure the mode of operation, swing function, light, set temperature and fan speed will retain memory. The
unit will restart when recovering from a power interruption to the memory saved before the interruption occurred. If the
power interruption occurs during a timed mode, the time left will not be remembered and will start to recount from the
beginning. There will be a 3 minute compressor delay before resuming.
14)Outdoor Compressor and Condenser Heating Band Control
Under normal conditions, the control logic of the Electric Heating Bands will be as follows:
1. Control of Compressor Electric Heating Band
a) Conditions for startup: The compressor is off and outdoor ambient <= 230 F
b) Conditions for turning off: Compressor operating, Compressor off and outdoor ambient >= 280 F
c) Band will turn off if the outdoor ambient temperature sensor has a malfunction.
2. Control of Condenser Electric Heating Band
a) Condenser Band will be on if the Outdoor Ambient <= 340 F
b) During defrost operation, the heater band will operate 3 minutes after the compressor starts operating. When
the compressor has operated for 3 minutes and the outdoor ambient >= 370 F, the band will be de-energized.
c) Electric band will be de-energized when the outdoor ambient >= 370 F
d) When 340 F < outdoor Ambient < 370 F, the electric heater band will keep it's previous status.
If the outdoor sensor has a malfunction, the Electric Heating Band will be de-energized. It will have a 2 minute delay be-
fore it can be started again.
Product Introduction
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