Samsung AW05B05A, Service Manual

Page: 12 / 21

Samsung Electronics 5-1
5. Troubleshooting
5-1 Method of Troubleshooting and Cautions on Troubleshooting
Before troubleshooting the air conditioner,
it is necessary to determine whether the electrical power or the electrical parts are faulty.
Follow this procedure :
The input voltage shall be 115V/60Hz
The air conditioner may not operate properly if the voltage is out of this range.
Malfunction Check point Possible cause
1. check the thermostat position. 1. Setting temp is lower than room temp.
2. check the connection of the lead wire. 2. Disconnection of the lead wire.
3. check the over load protector. 3. O.L.P is faulty
4. check the compressor. 4. Compressor is faulty
1. check the connection of the lead 1. disconnection of the lead wire
wire & switch. 2. switch is faulty.
2. check the motor 3. motor is faulty
1. check the refrigerant leakage. 1. Caused by the pipe crack
2. check the evaporator condition 2. shortage of refrigerant
( freezing, blocked with dusts, etc. ) 3. clean the evaporator & air filter.
❈
Difference of temp. exists between
the suction side and the discharge
side at least 12°C
❈
Standard condition
Indoor : 27°C outdoor : 35°C
1. check vibration of the pipe 1. pipes are contact with the other parts.
2. check the propeller fan and blower 2. the hex nut is loose
( not loose or broken ). 3. the parts are broken
3. check bearing noise of the motor 4. motor is faulty
4. check the compressor noise against 5. compressor is faulty
that of other compressors.
5-1-1 Check the Voltage of the power source.
5-1-2 Check weak and fragile parts.
5-1-3 Check the connection of terminals.
5-1-4 When a malfunction occurs:
➀
➁
➂
➃
The compressor does not
operate.
The motor does
not operate.
The cooling capacity
is low.
Noise
AW05E05A(AW0510)-1 6/9/00 5:11 PM Page 5-1