Panasonic CS-VZ9SKE Service Manual page 92

1.5°C
Lower level
Intake Temperature - Setting Temperature
Control content

Aluminium electric heater 3-way valve is ON in 90 sec.

Aluminium electric heater 3-way valve ON is completed, at the time that initial conditions are not arranged.
15.3.8 Aluminium Electric Heater (HEATCHARGE) Protection Control
Heat charge will absorb the heat from compressor body and store the heat inside the storage unit. Cool refrigerant
will flow through the heat charge and absorb the accumulate heat before return to compressor.
Safety control for aluminium electric heater.
Protection by temperature sensor and temperature fuse.
o
Aluminium electric heater coil surface temperature less than 100°C in normal condition.
o
Aluminium electric heater coil surface temperature around 350°C ~ 390°C in abnormal condition.
o

Heater OFF by sensor (1) temperature detection.

Heater STOP by sensor (2) temperature detection.

Temperature fuse makes heater when software OFF protection not active.
Control
1.0°C
Upper level
Non Control
Temp. Fuse
Sensor Temp. 2
Sensor Temp. 1
38Hz
Fuse wire cut
Abnormality (F83)
Heater OFF
Heater ON
Temperature
92
Control
Non Control
Compressor Hz
Hardware Protected
Software Protected
35Hz