11.SERVICE PROCEDURES

9)Poor Cooling

Check installation position of remote control unit.

• Does cool air from air condi-

tioner reach remote control

unit directly ?

 

 

YES

Change installation

position of remote

 

 

control unit.

 

 

 

 

• Is wide tube between indoor unit

and outdoor unit insulated ?

YES

NO

Insulate wide tube and then execute taping with narrow tube.

Measure temperatures of suction and discharge air of indoor unit.

 

Temperature

 

 

 

 

difference

 

 

 

 

Possibility of

 

Charge

 

is small.

 

 

refrigerant

 

refrigerant

 

 

 

 

 

shortage.

 

(R22).

 

 

 

 

 

Temperature difference between suction and discharge air is

large enough (Approx. 10 deg. or more).

• Check clogging of air

 

 

 

 

filter.

Air filter is clogged.

 

 

 

 

 

 

 

 

 

YES

 

• Is fan speed set to LOW ?

 

 

 

 

 

 

 

 

 

 

 

• Review cooling load estimate, if performance of air conditioner is normal.

Clean filter.

Set fan speed to either HIGH or MEDIUM.

Reduce cooling load or replace the unit with higher cooling capacity.

1040_X_S

10) Excessive Cooling.

YES

• The set temperature is too low.

• Is the remote control unit installed

NO

 

 

at a place where it can

 

detect the room temperature

 

 

properly ?

 

 

 

 

 

Set the temperature to higher value using temperature setting button of the remote control unit.

Change installation position of the remote control unit.

0637_X_S

SM830079

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Sanyo XS1852, C1852, CL1852 service manual Poor Cooling, Excessive Cooling

XS1852, CL1852, C1852 specifications

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