Liquid 
Compression 
Protection, 
Crankcase 
Heater
Input 
power
W 31-37 31-37 31-37 31-37 31-37 34-41
Compressor 
OFF
°C 160 165 120* 115 135 120
Protection,
50Hz
Internal °C 165 165 - - 140 135
Protector
60Hz
ON °C 
50Hz
90 102 90*
61
61 61
°C 
60Hz
105 105 - - 61 61
Trip time
50Hz
5-15sec/
55A
5-15sec/
55A
- 10sec/44A 10sec/40A 10sec/40A
60Hz
3-9sec/
96A
3-9sec/
96A
- - 10sec/85A 10sec/85A
For Fan 
Motor 
Protection, 
OFF °C 135 135 135 135 135 135
Internal 
Protector 
(49F)
ON °C 85 85 85 85 85 85
Heating 
Pressure 
Switch (Heat
OFF
MPa
2.35 2.35 2.35 2.35 2.35 2.35
 
Pump Only) 
(Fan Speed) 
(63H
2
) 
ON
MPa
2.25 2.25 2.25 2.25 2.25 2.25
Cooling 
Control,
Control
 
Th   30 degree celcius ----- High speed 
Heat 
Exchanger
method  
Th < 30 degree celcius ------5 speed step control 
Outlet Temp.
Thermistor 
(Th2)
For Control 
Protection, 
Fuse
CUT A 6.3 6.3 6.3 6.3 6.3 6.3
1MPa = 10.2 kgf/cm
2 /  
* Head Thermostat only for CU-A28BBP8 / CU-C28BBP8
14. COMPONENT SPECIFICATION
78