SG-38MHRC-01 Specifications subject to change without notice. 25
Evaporator Coil Temperature Protection
Fig. 29 — Evaporator Coil Temperature Protection
When the evaporator temperature is higher than the setting protection
value, the compressor stops.
AUTO Mode
AUTO mode can be selected with the remote controller and the
setting temperature can be changed between 60.0°F~86°F
(16°C~30°C).
In the AUTO mode, the unit chooses either COOLING, HEATING
or the FAN-ONLY mode accT2, T4 and relative humidity.
Fig. 30 — AUTO Mode
Heating*: COOLING ONLY models run at fan speed. The indoor
fan runs in the AUTO fan speed for the relevant mode. The louver
operates the same as in the relevant mode.
If the unit switches mode between HEATING and COOLING, the
compressor repeatedly stops for a certain time and then chooses the
mode according to T1-Ts. If the setting temperature is modified, the
unit selects a running function again.
DRYING mode
The indoor fan speed is fixed at breeze and can not be changed. The
louver angle is the same as in the COOLING mode.
Low Indoor Room Temperature Protection
In the DRYING mode, if the room temperature is lower than 50°F
(10°C), the compressor stops and does not resume until the room
temperature exceeds 53.6°F (12°C).
Evaporator anti-freezing protection, condenser high temperature
protection and outdoor unit frequency limit are active and are the
same as that in the COOLING mode. The outdoor fan operates the
same as in COOLING mode.
FORCED OPERATION Function
Enter FORCED OPERATION function:
When the machine is off, press TOUCH to engage the Forced Auto
Mode. Press TOUCH again, within 5 seconds, to engage the
FORCED COOLING mode. In FORCED AUTO, FORCED
COOLING or any other operation mode, press TOUCH to turn off
the unit.
In the FORCED OPERATION mode, all general protections and the
remote controller are available.
Operation Rules:
FORCED COOLING mode:
The compressor runs at the F2 frequency and the indoor fan runs as a
breeze. After running for 30 minutes, the unit enters the AUTO mode
at a 75.2°F (24°C) setting temperature.
FORCED AUTO mode:
The FORCED AUTO mode is the same as the normal AUTO mode
with a 75.2°F (24°C) setting temperature.
AUTO-RESTART function
The indoor unit is equipped with an AUTO-RESTART function,
which is carried out through an auto-restart module. In case of a
sudden power failure, the module memorizes the setting conditions
before the power failure. The unit resumes the previous operation
setting (not including the swing function) automatically 3 minutes
after the power returns.
If the memorization condition is the FORCED COOLING mode, the
unit runs in the COOLING mode for 30 minutes and enters the
AUTO mode as 75.2°F (24°C) setting temp.
If the air conditioner turns off before the unit powers off and the air
conditioner is required to restart immediately, the compressor delays
for 1 minute when the power is on. Under other conditions, the
compressor has a 3 minute delay when it restarts.
Refrigerant Leakage Detection
With this new technology, the display area displays EC when the
outdoor unit detects a refrigerant leak.
46°F (8°C) Heating
When the compressor is running, the indoor fan motor runs without
the anti-cold air function. When the compressor is off, the indoor fan
motor is off.
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