Ventilation Working; Automatic Mode; Sleep Function; Failure Display - Chigo ACS-HR12LED R410A Service Manual

working mode.
Ventilation Ventilation working working
Ventilation

Ventilation working

working mode
In the ventilation mode .When ventilating, the compressor, outdoor blower fan, four-way valve and electric heating are
all closed and the indoor blower fan is running at the set speed.

Automatic mode

Automatic Automatic Automatic mode mode mode
● Conditions for entering the automatic running mode are: After power-up for the first time, start up and select the
automatic operating mode of remote or press emergency key, the working mode depends on Tr and if the working
mode had set , it doesn't change by Tr and the default set temperature is 25 ℃.
Time Time on on on and and and time time
Time Time on and time time off
When the time on or time off is used, the clock of remote controller shall be corresponding to the current clock and the
timing times is less than or equal to 24 hours, when the timing time is reached, unit will start-up or shutdown.
Sleep Sleep Sleep

Sleep function

function function function
When the sleep key is press, air conditioner enter sleep state, indoor blower fan running at low speed, only sleep
indication display.
Emergency Emergency Emergency Emergency key key key function key function function function
There is a forcible execution key on the panel of indoor units and the air conditioner can run by pressing the key when
the remote control is out of work or missing.
When pressing down the forcible execution key, then power up and enter the self-check program.
Failure Failure Failure

Failure display

display display display
LED
code explain
display at flicker 1/1
DF
on state
display at flicker 1/3
off state
display at flicker 1/1
E2
off state
mode mode
mode
off off
off
lamp display
code explain
SEC
SEC
display
at
SEC on/off
state
failure
Normal, the defrost state is removed, it
defrost
will return to normal condition
indication
automatically
1、 Normal (during heating mode )
2、It will be removed when the coil pipe
anti cold wind
temperature sensor reaches certain
temperature.
1、Check whether the resistance of the
sensor is normal (the resistance is 5КΩ
in the normal temperature 25℃), when
it is abnormal the sensor should be
replaced.
2、Check whether there is short circuit or
room temp.
open circuit in the wire of the sensor,
sensor fault
and whether the plug is connected well,
whether there is welding off or rosin
joint on the electric control board, if
there is any, it should be repaired.
3、When the 1 and 2 are both normal, then
the components or integrated circuit is
- 27 -
The reason of fault and solution