Electric Heater Control 1 - Panasonic CS-XE15SKUA Service Manual

12.13 Electric Heater Control 1


Starting condition
When all condition (1+2+3+4+5+6+7) are fulfilled.
o
 Operation ON
 Indoor Heating mode
 Thermostat ON
 Temperature different control
(Remote controller setting -
Example:
a. When air conditioning is switch ON,
Remote controller setting = 82.4°F (28°C)
Intake air temperature = 78.8°F (26°C)
Temp difference = 82.4°F (28°C) - 78.8°F (26°C) = 3.6°F (2°C)
Heater ON
b. After a while when
Remote controller setting = 82.4°F (28°C)
Intake air temperature = 80.6°F (27°C)
Temp difference = 82.4°F (28°C) - 80.6°F (27°C) = 1.8°F (1°C)
Heater OFF
c. After a while when
Temp difference ≥ 7.2°F (4°C)
Heater ON
 Intake air temperature control
 Evaporator pipe sensor control
 Indoor Fan speed ≥ Lo Fan

Control content
Electric heater will be switch ON when all condition for starting condition fulfilled.
o
Once Electric heater switched ON, It will operate at least 3 minutes.
o
°F (°C)
Temp difference
When air conditioning is
Intake air temperature) switched ON
7.2 (4)
1.8 (1)
Intake air temperature [°F (°C)]
Evaporator pipe sensor
140.0 (60) (β)
132.8 (56) (α)
Heater ON
Heater OFF
Heater OFF
84.2 (29)
Heater ON
78.8 (26)
When air conditioning is
switched ON
[°F (°C)]
Heater OFF
Heater ON
When air conditioning is
switched ON
40
ON by
Temp difference ≥ 7.2°F (4°C)
OFF by
Temp difference ≤ 1.8°F (1°C)