Midea CSU 12HCAA, Руководство по установке и обслуживанию

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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
●
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 on and 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 function
When the sleep key is press, air conditioner enter sleep state, indoor blower fan running at low speed, only sleep
indication display.
Emergency key 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 display
LED lamp display
code explain code explain
failure The reason of fault and solution
DF
display at
on state
flicker 1/1
SEC
defrost
indication
Normal, the defrost state is removed, it will
return to normal condition automatically
display at
off state
flicker 1/3
SEC
anti cold wind
1
、
Normal (during heating mode )
2
、
It will be removed when the coil pipe
temperature sensor reaches certain
temperature.
E2
display at
off state
flicker 1/1
SEC
display
at on/off
state
room temp.
sensor fault
1
、
Check whether the resistance of the
sensor is normal (the resistance is 5 КΩ in
the normal temperature 25
℃
), when it is
abnormal the sensor should be replaced.
2
、
Check whether there is short circuit or
open circuit in the wire of the sensor, 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
damaged, the electric control board
should be replaced.
E3
display at
off state
flicker 3/5
SEC
display
at on/off
coil temp.
sensor fault
1
、
Check whether the resistance of the
sensor is normal (the resistance is 5 КΩ in