Panasonic CS-E9SD3UAW Service Manual

Contents

8515.5.14 H98 (Error Code Stored in Memory and no alarm is triggered / no TIMER LEDflashing)Malfunction Decision Conditions Indoor high pressure is detected when indoor heat exchanger is detecting very high temperature when the unit isoperating in heating operation. Phenomena: unit is stopping and re-starting very often in heating mode.Malfunction Caused Indoor heat exchanger thermistor Clogged air filter or heat exchanger Over-bent pipe (liquid side)TroubleshootingWhen abnormality indication starts againCheck the indoor unit intake air filterIs the air filter dirty?Check the dust accumulation on the indoor unit heat exchangerIs the indoor unit heat exchanger dirty?Is the measured resistance of the indoor pipe temperaturethermistor matches the value specified in its characteristicchart?Check the indoor pipe temperature thermistor:Plug out connector (CN-TH) from the indoor unit PCBMeasure the resistance of the indoor heat exchangertemperature thermistorFor safety reason and to preventcomponent breakdown, always switchoff the power before remove andconnect the component.YESYESYESNONONOClean the air filterClean the indoor unit heat exchangerDefect in indoor pipe temperaturethermistorReplace the indoor pipe temperaturethermistorCheck the piping & installation conditionReplace piping / reinstall the unitif necessaryCaution