Panasonic CS-A73KR Service Manual page 97

Outdoor Unit
CU-A73KR / CU-A93KR
Compressor Reverse Rotation
Protection Control
• To protect compressor from reverse
rotation when there is a instantaneous
power failure.
Overload Protector
• 2-Stage OLP to protect the compressor.
Overload Protector will trip when
– Temperature of compressor increases
to 120°C.
– High temperature or high current flows
to compressor.
(Refer circuit diagram for OLP
characteristic)
60 Secs. Forced Operation Control
• Once the compressor is activated, it
does not stop within the first 60 secs.
However, it stops immediately with
remote control stop signal.
Outdoor Fan Operation Control
• Inner protector.
CU-A123KR
Deice Control
• To prevent frosting at outdoor heat
exchanger. (Only for Heating Operation)
• Temperature of outdoor heat exchanger is
sensed by TRS (Thermal Reed Switch).
Overload Protection Control
• Outdoor fan stops when indoor heat
exchanger temperature rises to 51°C
and above, and restarts when the indoor
heat exchanger temperature drops to
49°C and below.
• Compressor stop when indoor heat
exchanger temperature reaches 65°C or
above. (Heating Operation Only)
Compressor Protection Control
• If the outdoor fan motor is not running
after compressor starts for 50 secs.,
compressor will stop. (Cooling and Soft
Dry Operation only)
4-Way Valve Control
• When the unit is switched to "OFF"
during Heating Operation, 4-way valve
stays at Heating position for 5 minutes.
Outdoor Fan Motor Control