Panasonic cs-mke18nku Benutzerhandbuch

Seite von 122
Overload prevention during heating
During HEAT operation, the temperature of the indoor heat 
exchanger is used to control the frequency and lessen the load 
on the compressor before the protective device is activated.
Freeze prevention
During COOL or DRY operation, freezing is detected and 
operation is stopped when the temperature of the indoor heat 
exchanger matches the conditions below.
1.  Freeze-prevention operation is engaged when the 
temperature of the indoor heat exchanger is below 43°F(6°C).
2.  Restart after freeze-prevention operation occurs when the 
temperature of the indoor heat exchanger reaches 46°F(8°C) 
or above.
a.
  Area: Automatic capacity control
b.
  When Point A has been exceeded, the operation frequency is 
reduced by a certain proportion.
c.
  Area: Frequency increase is prohibited.
d.
  At Point B and below, overload prevention is ended and 
control is the same as in the 
area.
a.
  Area: Automatic capacity control
b.
  When the temperature drops below Point A, the operation 
frequency is reduced by a certain proportion.
c.
  Area: Frequency increase is prohibited.
d.
  When the temperature reaches Point C or above, freezing 
prevention is ended and control is the same as in the 
a
 area.
*
  When the temperature drops to below 36°F(2°C) (continuously 
for 2 minutes or longer), the compressor stops.
     Once the freeze condition is detected, the air conditioner will 
work less than the maximum frequency until it is turned off.
A
A
*
B
C
B
Indoor heat exchanger
A. Control start
B. Control end
a
b
c
d
a
b
c
d
Indoor heat e
x
changer
temperature 
°F(
°C)
Indoor heat e
x
changer
temperature 
°F (
°C)
36
(2)
43
(6)
46
(8)
7-2.  Protective Functions
Cold-air prevention during heating
During heating, the fan speed is set to "LL" (very low) or stopped.
As the temperature of the indoor heat exchanger rises, the fan 
speed is changed to the set speed.
At stability of operation
At start of operation
High
LL
Stopped
Set fan speed
77
(25)
86
(30)
Approx. 104
(40)
Indoor heat exchanger
temperature °F(°C)
•  The fan speed is forcibly changed to "LL" beginning 30 seconds 
after the thermostat turns OFF.
•  At stability of operation refers to operation when the room 
temperature has approached the set temperature.
•  When HEAT operation starts, the indoor fan is stopped until the 
temperature of the indoor heat exchanger reaches 68°F(20°C) 
or higher, or until the room temperature reaches 59°F(15°C) or 
higher.
NOTE
T
1
T
2
  The operation temperature shown as T
1
 and T
2
 in the chart left 
differ by models.
NOTE
T
1
T
2
127(53)
CS-KE7NKU
117(47)
124(51)
CS-KE18NKU
CS-KE9NKU
CS-KE24NKU
CS-KE12NKU
113(45)
°F(°C)
34