Panasonic Urban Multi MX1R Series Service Manual

PACD011001C2Table of Contents iii3.4 Indoor Unit: Fan Motor (M1F) Lock, Overload......................................1593.5 Indoor Unit: Malfunction of Swing Flap Motor (M1S)............................1603.6 Indoor Unit: Malfunction of Moving Part ofElectronic Expansion Valve (Y1E)........................................................1613.7 Indoor Unit: Drain Level above Limit ....................................................1623.8 Indoor Unit: Malfunction of Capacity Determination Device .................1633.9 Indoor Unit: Malfunction of Thermistor (R2T) for Liquid Pipe ...............1643.10 Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes ................1653.11 Indoor Unit: Malfunction of Thermistor (R1T) for Air Inlet.....................1663.12 Indoor Unit: Malfunction of Thermostat Sensorin Remote Controller ............................................................................1673.13 Outdoor Unit: Actuation of Safety Device.............................................1683.14 Outdoor Unit: PC Board Defect ............................................................1693.15 Outdoor Unit: Actuation of High Pressure Switch.................................1703.16 Outdoor Unit: Actuation of Low Pressure Switch .................................1713.17 Outdoor Unit: Malfunction of Moving Part ofElectronic Expansion Valve (Y1E)........................................................1723.18 Outdoor Unit: Abnormal Discharge Pipe Temperature.........................1733.19 Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air............1743.20 Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R3T)...........1753.21 Outdoor Unit: Malfunction of Thermistor (R4T) for Suction Pipe..........1763.22 Outdoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger ....1773.23 Outdoor Unit: Malfunction of Discharge Pipe Pressure Sensor ...........1783.24 Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor................1793.25 Outdoor Unit: Malfunction of Oil Temperature Thermistor (R5T) .........1803.26 Low Pressure Drop Due to Refrigerant Shortage orElectronic Expansion Valve Failure......................................................1813.27 Negative Phase, Open Phase ..............................................................1823.28 Malfunction of Transmission between Indoor Units..............................1833.29 Malfunction of Transmissionbetween Remote Controller and Indoor Unit ........................................1843.30 Malfunction of Transmission between Outdoor Units...........................1853.31 Malfunction of Transmissionbetween Master and Slave Remote Controllers...................................1863.32 Malfunction of Transmissionbetween Indoor and Outdoor Units in the Same System .....................1873.33 Excessive Number of Indoor Units .......................................................1883.34 Address Duplication of Central Remote Controller...............................1893.35 Refrigerant System not set, Incompatible Wiring/Piping ......................1903.36 Malfunction of System, Refrigerant System Address Undefined..........1914. Failure Diagnosis for Inverter System .................................................1924.1 Points of Diagnosis...............................................................................1924.2 How to use the Monitor Switch on the Inverter PC Board ....................1935. Troubleshooting (Inverter)...................................................................1945.1 Outdoor Unit: Malfunction of Inverter RadiatingFin Temperature Rise...........................................................................1945.2 Outdoor Unit: Inverter Instantaneous Over-Current .............................1955.3 Outdoor Unit: Inverter Thermostat Sensor, Compressor Overload ......1965.4 Outdoor Unit: Inverter Stall Prevention, Compressor Lock ..................1975.5 Outdoor Unit: Malfunction of Transmissionbetween Inverter and Control PC Board ..............................................1985.6 Power Supply Insufficient or Instantaneous Failure .............................199