Panasonic CS-A12CTP Service Manual

Also see for CS-A12CTP: Brochure Operating instructions Operating instructions Operating instructions Technical information

Outdoor UnitCU-A12CTP5• To protect compressor from reverserotation when there is a instantaneouspower failure.60 Secs. Forced Operation Control• Once the compressor is activated, it doesnot stop within the first 60 secs.However, it stops immediately with remotecontrol stop signal.Overload Protector• OLP to protect the compressor for A12CTonly.Inner protector for A18CT & A24CT only.Compressor Reverse RotationProtection ControlOutdoor Fan Operation ControlA18 / 24CT• 4-pole induction motor (2 speed).• For Cooling or Soft Dry operationHi-speed ............... When outdoortemperature reaches to 31°C.Lo-speed .............. When outdoortemperature reaches to 29°C.• For Heating operationHi-speed ............... When outdoortemperature reaches to 13.5°C.Lo-speed .............. When outdoortemperature reaches to 15.5°C.• For Over-heating Protection, the Fan isswitched ON or OFF depending on thepiping temperature and the outdoortemperature.A12CT• 6-pole induction motor (1 speed).CU-A18CTP5CU-A24CTP54-Way Valve Control• When the unit is switched to “OFF” duringHeating Operation, 4-way valve stays atHeating position for 5 minutes.Overload Protection Control• Outdoor fan stops when indoor heatexchanger temperature rises to 51°C andabove, and restarts when the indoor heatexchanger temperature drops to 49°C andbelow (A12CT).• Compressor stop when indoor heatexchanger temperature reaches 65°C(A12CT), 68°C (A18CT & A24CT).(Heating Operation Only)Deice Control• To prevent frosting at outdoor heat ex-changer. (Only for Heating Operation)Compressor Protection Control• If the outdoor fan motor is not running aftercompressor starts for 50 secs., compressorwill stop. (Cooling and Soft Dry Operationonly).4CS-A12CTP CU-A12CTP5 / CS-A18CTP CU-A18CTP5 / CS-A24CTP CU-A24CTP5