Poor COOL(HEAT) operation
Improper set of temperature 
Adjust set temperature
If cooling (heating) load is 
Check the forecasted load of cooling (heating) proper
|
|
|
|
|
|
|
|
|
|
|
|
| heck and fill the leakage, then |
| |
|
|
|
|
| The refrigerant has leakage or is | ||||||||||
|
|
|
|
|
|
| vacuumize it and supplement the re- |
|
| ||||||
|
|
|
|
| insufficient |
|
|
|
|
| |||||
|
|
|
|
|
|
|
|
|
|
| |||||
|
|
|
|
|
|
|
|
| frigerant as required |
|
| ||||
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
| Leakage between the high pres- |
|
|
|
|
|
| ||||
|
|
|
|
|
|
|
|
|
|
| |||||
|
|
|
|
|
|
|
| Replace the compressor |
| ||||||
|
|
|
|
| sure and the low pressure in- |
|
|
|
| ||||||
| Malfunction of |
|
|
|
|
|
|
| |||||||
|
|
|
| side the compressor |
|
|
|
|
|
|
| ||||
| r e f r i g e r a n t |
|
|
|
|
|
|
|
|
|
| ||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
| flow |
|
|
| Malfunction of |
|
|
| Replace the |
| |||||
|
|
|
|
|
|
| |||||||||
|
|
|
|
|
|
|
| ||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
| Local block of capillary |
|
|
| Replace the capillary |
| |||||
|
|
|
|
|
|
|
| ||||||||
|
|
|
|
|
|
|
|
| |||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| Judge whether the system is blocked by |
| |
|
|
|
|
|
|
|
|
|
|
|
|
| observing the condensation of evapora- |
| |
|
|
|
|
| Blockage of cooling system |
|
|
|
| ||||||
|
|
|
|
|
|
| tor and the pressure value of the high |
|
| ||||||
|
|
|
|
|
|
|
|
| |||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
| pressure manometer and take measures |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
| to deal with the system. |
| |
| Heat insulation for the connection |
|
|
|
|
|
|
|
|
|
| ||||
|
|
|
| Make sure that heat insulation for the thick and thin pipes | |||||||||||
| pipes of the indoor unit and the out- |
|
|
| |||||||||||
|
|
|
| is good. Heat insulation must also be provided for the | |||||||||||
|
|
|
| ||||||||||||
| door unit is bad. |
|
|
|
|
|
|
| |||||||
|
|
|
|
|
|
|
| joint andthe exposed part of the copper pipe . | |||||||
|
|
|
|
|
|
|
|
| |||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Air circulation is insufficient
| Block of outdoor heat ex- |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Clean the dust accumulated on the surface of | ||||||||
|
|
|
|
|
|
|
| |||||||||
| changer |
|
|
|
|
|
| the heat exchanger. |
|
|
|
| ||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Clean the filter |
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
|
| ||||
| Air filter were blocked |
|
|
|
|
|
|
|
| |||||||
|
|
|
|
|
|
|
|
|
|
|
|
| ||||
|
|
|
|
|
|
|
|
| To set the fan speed to high or |
|
|
| ||||
| Fan speed was set too slow |
| ||||||||||||||
|
|
|
|
|
| middle speed |
|
|
|
| ||||||
|
|
|
|
|
|
|
|
|
| |||||||
|
|
|
|
|
|
|
|
|
|
|
|
| ||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| Replace the capaci- |
|
| |
|
|
|
|
|
|
|
|
| Capacitor |
|
| |||||
| Fan rotation speed becomes |
|
|
|
| damage |
|
| tor |
|
| |||||
| low |
|
|
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
|
| ||||
|
|
|
|
| Motor damage |
|
|
| Replace the motor |
| ||||||
|
|
|
|
|
|
|
|
|
|
|
|
| ||||
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| The installation position of the |
|
|
|
|
|
| Good ventilation must be provided for the |
|
|
| |||||
|
|
|
|
|
|
|
|
|
| |||||||
| outdoor unit is not appropriate. |
|
|
|
|
| installation position of the outdoor unit. |
|
|
| ||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Properly install the rainproof plate or the sunproof plate. If the |
The outdoor temperature is too high. |
|
|
| |
|
|
| maximum cool air still can not meet the requirement, it is sug- | |
|
|
|
| |
|
|
|
| gested to replace the air conditioner. |
|
|
|
|
|
|
|
|
|
|
The air tightness is not enough. People |
|
|
| Keep certain air tightness indoors, try not to use |
come in and out too frequently. There |
|
|
| |
|
|
| electricalappliance with large quantity of heat | |
are heating devices indoors. |
|
|
| |
|
|
|
| |
|
|
|
|
|
