Hisense 88FZBpC, Maintenance Manual, Page: 8 / 37

Page 7 of 36
五、
ELECTRIC FUNCTIONS
6
．
1 Accessibility statement
6.1.1
Failure codes self-test:
After continuously pressing "efficient" key on the remote four times in 10
seconds, the air-conditioner stars fault self-test. The fault flag should be
checked by the display chip. If there is any failure, the fault codes are
displayed in the location of the temperature value displayed, which flash 10
seconds or so, and other icons are properly displayed. If there is no failure,
screen display reads "0." Then if there is display communication failure, it
should also be displayed.
6.1.2 Fixed-frequency mode:
The air-conditioner runs into the rating, after continuously receiving the
operation of the efficient button on the remote 10 times. The air-conditioner
runs according to the original settings state, frequency value is fixed, and the
buzzer sounds five times.
6.1.3 Panel buttons and remote control logic:
Indoor control change its own state after receiving the remote control signal,
and the display contents are changed according to the settings change after
display CPU receiving the signal from the indoor control board.
6.1.4 Key Operation
6.1.4.1 Switch Key: ON or OFF.
6.1.4.2 Mode Key: Switching mode cycle.
6.1.4.3 Speed Key: Switching wind speed loop.
6.1.4.4 Temp Key: Temperature increasing button, max 30.
6.1.4.5 Temperature- Key: Temperature decreasing button, minimum 16.
6.1.4.6 Left-right Throttle Key: Switching between sweeping and directional.
6.1.4.7 Lock Key: Entering lock state if no key operation about 1 minute, then
invalid key.
6.1.4.8 Unlock Key: Hold down the switch key for 2 seconds or so, Keys to unlock
state, Beeper.
6.1.5 Operator-machine communication
The air conditioner has two sets of thermal sensor to detect room temperatures.
One is equipped at remote controllers, and the other is equipped at the indoor
air inlet. 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.