Panasonic Cs A18gkd Cs A18gkd Cu A18gkd Cu A24gkh Repair Manual

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14 Troubleshooting Guide
14.1. Refrigeration Cycle System
In order to diagnose malfunctions, make sure that there are no
electrical problems before inspecting the refrigeration cycle.
Such problems include insufficient insulation, problem with the
power source, malfunction of a compressor and a fan.
The normal outlet air temperature and pressure of the
refrigeration cycle depends on various conditions, the standard
values for them are shown in the table on the right. 

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14.1.1. Relationship between the condition of the air conditioner and pressure and electric
current
• Carry out the measurements of pressure, electric current, and temperature fifteen minutes after an operation is started.
14.1.2. Diagnosis methods of a malfunction of a compressor and 4-Way Valve
Cooling Mode Heating Mode
 
Low Pressure High PressureElectric current 
during operatingLow Pressure High PressureElectric current 
during operating Condition of the air 
conditioner
Insufficient refrigerant...

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15 Disassembly and Assembly Instructions
15.1. Indoor Electronic Controllers and Control Board Removal Procedures
WARNING
• Cautions! When handling electronic controller, be careful of electrostatic discharge.
• Be sure to return the wiring to its original position.
• There are many high voltage components within the heat sink cover so never touch the interior during operation. Wait at least two minutes after
power has been turned off. 

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15.2. Indoor Fan Motor and Cross Flow Fan Removal Procedures 

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16 Technical Data
16.1. Thermostat Characteristics 

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16.2. Operation Characteristics 

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