Panasonic U-4LE1E5 Service Manual

Also see for U-4LE1E5: Installation instructions Service manual Installation instructions Service manual Operating instructions

Contents

Panasonic U-4LE1E5 Service Manual Manual pdf 24 page image

1 - 181Mini VRF SYSTEMControl Functions••*10-1. Discharge Gas Temperature ProtectionAlarmThe compressor upper-limit discharge temperature is 106°C. If the discharge temperature reaches 106°C, thenthe compressor stops. If the discharge temperature reaches 106°C 4 times repeatedly after restart, an alarmoccurs. After the compressor stops, if the discharge temperature at the stopped compressor is at or above 101°C,the compressor start restriction temperature, then this compressor does not operate until the temperature drops.10-2. Control For Detection of Discharge Sensor FailuresIf the temperature is at or above sensor failure temperature (80°C) (value in parentheses) 60 minutes afterthe compressor stopped, an alarm occurs.If the discharge gas temperature remains at or above sensor failure temperature (101°C) for 20 minutesafter the system is stopped, an alarm occurs.In this case, in addition to sensor failure, compressor overheating caused by insufficient refrigerant is also apossibility.11. Current Protection11-1. Fan MotorCompressormodelCompressortypeCompressorstart restrictiontemperature (°C)Alarm displayCompressor 1 Inverter 106 103 P03List of discharge temperature protectionsStop temperature (°C)Compressor 1 Inverter F04List of discharge sensor failuresStop temperature (°C)Alarm DescriptionP22 Occurs when the fan motor detects overcurrent, or when thefan motor is locked and does not turn.CompressormodelCompressortype10. Discharge Gas Temperature11. Current Protection