12. SERVICE PROCEDURES
11) Poor Cooling
Check installation position of remote control unit.
• Does cool air from air condi- |
tioner reach remote control |
unit directly ? |
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YES | Change installation | |
position of remote | ||
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| control unit. | |
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• 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 |
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| difference |
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| Possibility of |
| Charge | |
| is small. |
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| refrigerant |
| refrigerant | |
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| shortage. |
| (R22). |
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Temperature difference between suction and discharge air is
large enough (Approx. 10 deg. or more).
• Check clogging of air |
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filter. | Air filter is clogged. |
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| YES |
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• Is fan speed set to LOW ? |
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• 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
12) Excessive Cooling.
YES
• The set temperature is too low.
• Is the remote control unit installed | NO |
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at a place where it can |
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detect the room temperature |
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properly ? |
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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
SM830078
– 60 –