Cold Air Prevention; Timer Function; Fan Mode; Auto Mode - Gree Neo GWH09MA-A3DNA3A Installation, Service & Troubleshooting

Product Introduction
Basic Functions - 9K & 12K 115 volt

5.Cold Air Prevention

After the compressor starts, the indoor unit and louvers run in the mode below:
1. When Tindoor ambient<75°F: if Ttube≤104°F, the indoor fan doesn't run and then the indoor fan runs in low fan speed
after 2min. In 2min, if Ttube>104°F, the indoor fan will also run in low fan speed; after running in low speed for 1min, the
indoor fan will turn to run in set fan speed. In 1 minute of low fan speed or in 2 minute that the indoor fan doesn't run, if
Ttube>108°F, the indoor fan will turn to run in set fan speed.
2. When Tindoor ambient≥75°F: if Ttube≤108°F, the indoor fan runs in low fan speed and then the indoor fan runs in set
fan speed after 1min. In 1min of running in low fan speed, if Ttube>108°F, the indoor fan will turn to run in set fan speed.
Note: Tindoor ambient in 1 and 2 means at the beginning of heating mode, the indoor ambient temperature before starting
up the compressor, or after quitting defrosting, the indoor ambient temperature before clearing the defrosting symbol.

(4) Fan Mode

In fan mode, indoor fan operates at set fan speed, while compressor and outdoor fan all stop operation.
In fan mode, the temperature setting range is 61~86°F. Display is displaying operation icon and set temperature.

(5) Auto Mode

In auto mode, the system will select the operation mode (cooling, hearing of fan mode) according to the change of ambi-
ent temperature automatically. The display displays operation icon, actual operation mode and set temperature. 30s will be
delayed for protection during mode switchover. Protection function is the same as that in other modes.
The selection method for auto operation mode in details is as below:
a. When Tamb. ≥79°F, the unit operates in cooling mode. The defaulted set temperature is 77°F;
b. When Tamb. ≤72°F, the unit operates in heating mode. The defaulted set temperature is 68°F (if it's the cooling only unit
that operates in fan mode, the defaulted set temperature is 77°F);
c. When 73°F≤Tamb. ≤77°F,if the unit is turned on for the first time,it will operate in auto fan mode;if the unit switched to
auto mode from other mode, it will keep previous operation mode; if the unit is switched to auto mode from dry mode, it
will operates in fan mode.
d. When the unit operates in auto mode, frequency of compressor during cooling and heating is same as that in cooling
mode and heating mode respectively.
Protection function:
a. It's the same as that in cooling mode when it operates in cooling;
b.It's the same as that in heating ode when it operates in heating;
3. Other Control

(1) Timer Function

General timer and clock timer functions are compatible by equipping remote controller with different functions.
1. General Timer
Timer ON can be set at unit OFF. If selected ON time is reached, the unit will start to operate according to pre-
vious setting status.Time setting range is 0.5-24hr in 30-minute increments. Timer OFF can be set at unit ON. If
selected OFF time is reached, the unit will stop operation. Time setting range is 0.5-24hr in 30-minute
increments.
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