Hyundai HSH-121NBE, Service Manual

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5-3. Control function
5-3-1 Emergency switch
5-3-1-1 Press the emergency switch once to turn on the machine and press it again to turn off
the machine; in the automatic mode, the indoor control temperature is set at 24 ℃ with the
indoor fan speed setting is automatic and the flaps sweep.
5-3-1-2 When the machine is turned on (in the OFF condition), press and hold the emergency
switch for 5 seconds, the buzzer rings for 3 times and the controller starts in the trial operation.
The trial operation is the forced cooling with the indoor fan speed being set at high speeds,
the flaps sweeping and the air conditioner’s operation is irrelevant with room temperatures.
5-3-1-3 If a remote signal has been received during the emergency run, the machine will
operate upon the command of such a remote signal.
5-3-2 Operator-machine communication
5-3-2-1 The air conditioner has a thermal sensor to detect room temperatures. Some remote
controller is equipped with a thermal sensor (Such remote controller has the function of
man-machine communication. For details, refer to the section for the remote controller). In
addition, there is a thermal sensor at the indoor air inlet. In the case where the remote
controller is equipped with a thermal sensor, the default setting for room temperatures is
subject to the detection by the remote controller. The remote controller detects the room
temperature once every 20 seconds, and automatically transmits a signal at an interval of 3
minutes or when a change in the room temperature is detected. If the indoor control unit has
not received a remote signal for more than 10 minutes, the control function will be
automatically switched over to the thermal sensor on the indoor unit.
5-3-2-2 Neither the turning on nor turning off operation will cancel the operator-machine
communication function.
5-3-2-3 In default, the air conditioner is set to start the operator-machine communication
function.
5-3-3 Timer function
5-3-3-1 Timer on: When set to start in a time by the remote controller, the air conditioner starts
in the timer on condition. When the set time is up, the air conditioner will turn on and operates
in the preset conditions after receiving a signal from the remote controller. If the air conditioner
has not received a signal from the remote controller when the set time is up, it will
automatically start and operate in the preset conditions.
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