Chigo CS/CU-25H3A-V84 [5/13] 三 portable air conditioner serial

the unit is running.

3、 Check whether the indoor and outdoor wiring is right;

when it is wrong, connect them again according to the

circuit diagram

4、Check whether the contact of the inserter on the circuit

board and the connection are well, otherwise repair.

5、Check whether the signal feedback wire is disconnected,

replace or connect the feedback signal wire.

6、Check whether the supply power is phase-lacking or

phase opposition.

7、Check whether the AC electromagnetic contactor is well.

display at

off state

flicker 8/10

SEC

display

at off

state

frost

protection

/over heat

protection

1、 Check whether the filter of the indoor unit is dirty or

blocked, and clean if it is dirty.

2、Check whether the indoor fan is running normally, and

replace the motor if it is abnormal.

3、Check whether indoor pipe temperature sensor is normal,

and replace the sensor if it is abnormal.

4 、 Check whether the system pressure is normal, if

abnormal, should check whether there is leakage, and fill

the refrigerant again.

三、portable air conditioner serial

LED lamp display

code explain code explain

failure

The reason of fault and solution

display at

off state

room temp.

sensor fault

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 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.

display at

off state

coil

temp. sensor

fault

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 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

Chigo CS/CU-25H3A-V84 [5/13] 三 portable air conditioner serial

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