Timer Function - Haier HSU-12LEK03-Y2 Service Manual

Executive
function after 2
seconds by
remoter control:

Timer function:

Alarm from
indoor fan
motor:
HSU-12LEK03-Y2
After receiving remote control signal, the mainboard doesn't enter the corresponding
instruction task until 2 seconds elapse.
You can set 24-hour timer on or timer off as required, and the minimum time unit is 1
minute. After setting, a pattern of clock displayed on the LED, and it is off when timer
setting is completed. There are several timer mode as follows.
1) Timer on: The pattern of clock displayed on the LED ,the background light is off, and
unit behaves with halt status. Timer on is completed, and then unit starts running with the
pattern of clock disappeared ,and the background light is on. The unit starts with the last
setting receiving timer signals, and sleep setting is not allowed.
2) Timer off: Unit working, the pattern of clock displayed on the LED; When reaching
time setting, unit enters shutdown mode, and sleep function can be set. If timer off and
sleep are set synchronously, the one which time is short run first. Executing shutdown
instruction clear timer and sleep function.
3) Timer on and timer off can be set synchronously.
120 seconds later after the indoor fan motor is charged, and the impulse from fan motor
is not detected , then stop outputting voltage to indoor fan motor, send alarm signals.
13
Functions and control
Domestic air conditioner