Friedrich FPHMR18A3A Service Manual page 40

OPERATION
Remote Technical Parameters
Remote receiver distance (front of the air conditioner): 26ft.
Remote receiver angle: Less than 60 degrees.
Temperature control accuracy: ±2.4°F.
Time Response: Less than 1 second.
Display Functions
Remote
Current control functions on the remote controller (See unit's "Installation and Operating Manual")
Display of the indoor unit displays set temperature or indoor temperature.
Indoor unit
Running LED lit during operation, flashing when in defrost.
Timer LED lit when the timer mode is active.
Sleep LED lit when the sleep mode is activated and turns off after 10 seconds.
Compressor LED lit when compressor is running.
Remote control receiver receives signals from the remote control.
Displays error codes if present. An error code is displayed according to the signal from the indoor CPU. The error code will
flash for 5 seconds while displayed.
Indoor Unit Operation
Manual Operation "ON/OFF" Button:
When pressing the manual operation "ON/OFF" button after system is idle or in stand-by mode, the previous settings will be
restored from last operation: Mode, Temperature, and Fan Speed. The air flow directional setting is not restored. When first
powered, pressing the manual operation "ON/OFF" button will force the system would operate in "auto" mode and will enter
stand-by mode by pressing the button again. Pressing and holding the manual operation "ON/OFF" button for 5 seconds will
engage Test Mode and will beep 1 times. It will operate in cooling mode with the indoor fan speed set to high-speed and will
ignore indoor temperature for 5 minutes. If the manual operation "ON/OFF" button is pressed again or a signal is received
from the remote control, test mode will exit. If exited from the remote control the system will operate with the corresponding
mode selected on the remote control.
I-Feel Function
The I-Feel function is set by the remote control. The room temperature value interpreted by the system will use the
temperature on the remote control instead of the temperature reported by the ambient air sensor in the indoor unit. The
remote control will automatically transmits a temperature signal every 10 minutes. The remote control will transmits a
signal every 2 minutes if the temperature setpoint selected exceeds 2°F. If the indoor unit does not received a signal from the
remote in 30 minutes, the selected temperature setpoint will depend on the ambient air sensor of the indoor unit.
Timer Function
Max Timer range is 24 hours.
Timer ON/OFF can be cycled anytime.
Timer accuracy is ±1 minute.
The Timer can be adjusted by 1 min increments.
Timer On-OFF operational times can overlap.
Sleep Function
Sleep mode can only be used in Cooling, Heating and Dry mode.
If Sleep mode is selected in Cooling mode, the room temperature setting will increase 2.5°F every hour for 8 hours. Room
temperature will not rise more than 2.5°F per hour. Temperature rise will cease at 79°F. Room temperature will not rise
above 79°F.
If Sleep mode is selected in Heating mode, room temperature will be decreased by 2.5°F per hour for 3 hours but will not
decrease more than 2.5°F per hour or 8°F for the duration of the mode.
In either mode, the indoor fan run in the LOW speed. Last user settings (air direction and temperature) can be used, or
adjusted by user. The Running indicator will flash 10 times per 1-Hz frequency, then the unit will turn off all the light
indicators except the Sleep. After 5 minutes, the Sleep indicator will turn off. All indicators will be standby unless the
temperature or Time setting is adjusted. After setting these, the indicators will turn off after 10 seconds.
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