Panasonic CS-E18CKE Service Manual

Contents

1. Relationship between the condition of the air conditioner and pressure and electric currentCooling Mode Heating ModeCondition of the airconditoner Low Pressure High Pressure Electric currentduring operationLow Pressure High Pressure Electric currentduring operationInsufficient refrigerant(gas leakage)Clogged capillary tubeor StrainerShort circuit in theindoor unitHeat radiationdeficiency of theoutdoor unitInefficient compression• Carry on the measurements of pressure, electric current, and temperature fifteen minutes after an operation is started.12.2. Breakdown Self Diagnosis FunctionOnce abnormality detected during operation, the unit will immediately stop its operation (Timer LED is blinking) and maximum ofthree error codes (abnormality) will be saved in memory. The abnormality of the operation can be identified through the belowbreakdown diagnosis method:• Press “CHECK” button at remote control continuously for more than five seconds to turn on the diagnosis mode, “H11” will bedisplayed at remote control.• By pressing the TMER “ ” button once, next error code will be displayed; press “V” button once, previous error code will bedisplayed.• If error code displayed matches the error code saved in unit memory (abnormality detected), four “beep” sounds will be heardand Power LED will light on. Otherwise, one “beep” sound is heard.If “CHECK” button is press again during Cooling operation using test run operation mode for 30 seconds, the diagnosis mode willturn off.74