Control Mode (Indoor Unit Mode Control) - Friedrich FPHMR18A3A Service Manual

OPERATION

Control Mode (Indoor Unit Mode Control)

General Technical Parameters
Remote to receiver distance: 26 ft (8m).
Remote receiver angle: Less than 80 degrees.
Temperature control accuracy: ± 33.8°F (1°C)
Time error: Less than 1%.
Emergency Switch
Pressing the emergency button will activate the automatic mode of operation. Press the button to turn it on and
press it again to turn it off.
Forced Cooling Operation:
When the unit is OFF, press and hold the emergency button until the unit beeps (approximately 5 seconds). The
indoor unit will be forced into turbo operation. The flaps will sweep and the unit will operate in turbo mode
regardless of room temperatures. Forced cooling operation will be canceled once it receives a signal from the
remote control.
Indoor temperature Sensing
The indoor unit and remote controller are provided with a temperature sensor. The temperature sensor on the remote
controller detects the room temperature and sends this value to the indoor unit. If the indoor control unit has not received
remote control signal for a long time, it will automatically switch to the air conditioner body temperature sensor.
Timer function
Timer on
When start time is set 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.
Timer off
When a stop time is set by the remote cont roller, the air conditioner will start in the timer off condition. When the set time is
up, the air conditioner will turn off after receiving a signal from the remote controller. If the air conditi oner has not received a
signal from the remote controller when the set time is up, it will turn off automatically.
Neither the turning on nor turning off operation will cancel the timer function.
Auto Restart from Power Break
When the power supply is recoverd after a break, all presets are still effective and the air-conditioner can run according to
the previous setting.
How to set/ cancel:
It can be set with a wired remote controller.
For details, see internal control parameter adjustment.
Fault code
The fault code can be shown by digital tube on the indoor panel.
Filter clean
FC will light up when the air filter is clogged with dust.
How to set / cancel: It can be set or cancelled with wired remote controller.
For details, see internal control parameter adjustment.
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