Fedders GWH18MC-D3DNA1A/O Service Manual Download Page 21

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Function and Control

(4) Sleep function

(5) Timing function

The main board integrates general timing and moment timing. Such two timing functions can be selected through a remote
controller on which different functions are arranged.

1. General timing:

Timing start

: timing start can be set when the unit is off. When preset time is reached, the controller will operate in a preset

mode. Timing can be set at an interval of 0.5 hour in a scope of 0.5 - 24 hours.

Timing stop

: timing stop can be set when the unit is on. When preset time is reached, the system will be turned off. Timing

can be set at an interval of 0.5 hour in a scope of 0.5 - 24 hours.

2. Moment timing

Timing start

: if timing start is set when the system is at operation state, the system will continue to operate; if timing start is set

when the system is at stop, as the preset time is reached, the system will start to run in preset mode.

Timing stop

: if timing stop is set when the system is at stop state, the system will keep standby; if timing stop is set when the

system is in operation, as the preset time is reached, the system will stop running.

Timing change:

When the system is in timing mode, start and stop can be set through the On/Off button on the remote controller; or timing
time can be reset and the system will operate according to the latest setting.
When the system is in operation and both timing start and stop are set, the system will stay at currently set operation state.
When preset timing stop time is reached, the system will stop working.
When the system is at stop state and both timing start and stop are set, the system will keep at stop state. When preset timing
start time is reached, the system will start operation.
From then on, the system will operate in preset mode at a preset start time and stop at a preset stop time everyday. If timing
stop time is set as the same as timing start time, a stop command will be executed.

(6) Dry and mildew proof function

Dry and mildew proof function can be set in cooling and dehumidification modes.

(7) Control of indoor fan

Indoor fan can be set at four levels, super-high, high, middle and low, with a remote controller. When one level is set, the fan
will thus operate at such level. The fan can also be set at auto state.

(8) Power-failure memory function

What will be memorized includes modes, up and down wind blow, light, preset temperature, preset wind speed, general timing
(no memory for moment timing), and Fahrenheit /Celsius degree. When the unit is powered on again after power failure,
operation continues according to memorized content. If timing is not set by the last remote control command, the system will
memorize the last remote control command and operate in the mode specified in the last remote control command. If timing is
set by the last remote control command and power failure happens before the preset time, the system, as powered on again,
will memorize the timing function set by the last remote control command. Timing will be re-counted from the time at which the
system is powered again. If timing is set by the last remote control command and timing of start or stop is reached before
power failure, the system, as powered on again, will memorize operation state before power failure and will not perform timing
action. Moment timing is out the range of memory.

(9) Locked Protection of PG Motor

When starting up the fans, if the motor has run at a lower speed continuously for a period, for preventing

automatic protection of the motor, stop running, and display the locked operation; if the machine is running at

present, the code of the locked fault---H6 of double-eight digital tubes will be displayed; if the machine is shut

down at present, the information of the locked fault will not be displayed.

(10) Super Power Function

In cooling and heating modes (automatic, dehumidifying and air-supplying modes are without strong power),

press the button of Super Power, the wind speed on the remote controller is displayed as super-high air flow, and

the inner fans are also turned to super-high air flow;

(11) Health Function

When the inner fans are running, the remote controller is set at the Health function at this time (if there is no

Health button on the remote controller, the Health On order is defaulted), then start the Health function device.