Table of Contents Symbol Explanations Safety Precautions Precautions for Handling Units for Use with R410A Table of Contents Components and Functions Indoor Unit Remote Controller Remote Controller Buttons Remote Controller Display Specifications NC Curves Sound Pressure Levels Fan Performance and Corrected Air Flow Outlines and Dimensions Wiring Diagram Refrigerant System Diagram Component and Check Points Thermistor Characteristic Graph Fan Motor Troubleshooting Error Code Lists Serial Communication Error (Indoor Unit) Drain Sensor Submergence (Models with a Float Switch) Drain Pump Fault (Models with a Drain Sensor) Drain Pump Fault (Models with a Float Switch) Drain Sensor (Thd) Fault RPM Error/Motor Error Abnormal Bus Voltage Rise (Indoor Unit) IPM Error (Indoor Unit) Short-Circuited Ipm/Ground Fault (Indoor Unit) Position Detection Error at Startup (Indoor Unit) Pipe Temperature Sensor (TH2) Fault (OA Processing Unit) Return Air Temperature Sensor (TH4) Fault (OA Processing Unit) Pipe Temperature Sensor (TH22) Fault (Indoor Unit) Return Air Temperature Sensor (TH21) Fault (Indoor Unit) Heatsink Temperature Sensor (THHS) Fault (Indoor Unit) Open-Circuited Ipm/Loose ACCT Connector (Indoor Unit) Address Overlap Transmission Processor Hardware Error Error Code Transmission Line Bus Busy Error Communication Error between Device and Transmission Processors No ACK Error No Response Error MA Controller Signal Reception Error (no Signal Reception) MA Remote Controller Signal Transmission Error (Synchronization Error) MA Remote Controller Signal Transmission Error (Hardware Error) Error Code 6834 MA Controller Signal Reception Error (Start Bit Detection Error) Capacity Code Setting Error Remote Controller Sensor Fault Pulse Signal Output and Valve Operation LEV Valve Closing and Opening Operation Indoor LEV LEV Operation Address Switch Setting Indoor Controller Board Test Point Diagram Noise Filter Board (NF Board) Power Supply Board INV Board Dipswitch Setting (Factory Setting) Function Setting External Static Pressure Power Voltage Setting Model Setting Capacity Code Setting Selecting a Function To Change the Settings To Confirm the Setting 1S and 10Ths Digits SW11, SW12 (Rotary Switch) Connection No. Setting Removing the Control Box Cover Control Box Disassembly Procedure Thermistor (Intake Air) Thermistor (Gas Pipe) (Liquid Pipe) – LEV Removing the Bottom Plate Removing the Drainpan Heat Exchanger Reactor, Fan, and Fan Motor Removing the Reactor Removing the Fan Case Removing the Fan and Fan Motor Optional Parts
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Quick Links 1 Components and Functions 2 Indoor Unit 3 Specifications 4 Fan Performance and Corrected Air Flow 5 Wiring Diagram 6 Troubleshooting 7 Optional Parts Download this manual AIR CONDITIONERS2011TECHNICAL & SERVICE MANUALModel nameModel namePEFY-P72NMHSU-EPEFY-P96NMHSU-E Table of Contents Previous Page Next Page 1 2 3 4 5
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