Mitsubishi Electric PKH18FK Technical & Service Manual page 40

2-4 AUTO operation (Automatic COOL/HEAT change over operation)
-CENTRALLY CONTROLLED-
POWER
STAND BY
ON
DEFROST
CHECK DRY
HEAT AUTO
HEAT COOL
CHECK SET
WARMER
SET TEMP F TEMPERATURE
TIMER OFF
TIMER MODE
AUTO STOP
HR
AUTO START
LOW HIGH FAN SPEED LOW/HIOGH
AIR
UP/DOWN
DISCHARGE
F
AUTO RETURN
CHECK TEST RUN CHECK
MITSUBISHI ELECTRIC
(1) Initial mode
1 When AUTO operation starts after unit OFF.
If the room temperature displayed on remote controller is higher than the set temperature, operation starts in COOL
mode.
If the room temperature displayed on remote controller is equal to or lower than the set temperature, operation starts
HEAT mode.
2 When AUTO operation starts after COOL or HEAT operation, the previous mode continues.
(2)Mode change
1 HEAT mode changes to cool mode when 15 minutes have passed since the room temperature became 2 degrees
above the set temperature.
2 COOL mode changes to HEAT mode when 15 minutes have passed since the room temperature became 2 degrees
below the set temperature.
To:Set temperature (19
(degree)
To + 4
To + 2
To
To - 2
To - 4
Start
ON
Compressor
OFF
(3)Temperature range
AUTO operation is available under the outside air temperatures as follows.
-15.8
10¡F
-17¡F
40
ON/OFF
COOL/DRY
COOLER
HOURS
SWING
STOP
TEST RUN
When the room temperature displayed remote controller becomes2degrees above the set temperature,
28 )
the operation mode can not be changed for 15 minutes.
15 minutes
Mininum 3 minutes
HEAT mode
32 50 68
Cooling range
Heating range
<How to operate>
1 Press POWER ON/OFF button.
2 Press AUTO button to set operation mode to AUTO.
3 To set desired temperature, press WARMER or COOLER
button.
NOTE : Set temperature changes by 2˚F in the range 66~86˚F,
each time WARMER or COOLER button is pressed.
Once the desired temperature is set, operation mode is
switched automatically between COOL and HEAT
according to room temperature.
Mode change (HEAT
COOL mode
Mininum 3 minutes
86 104
COOL)
Mode change
15 minutes (COOL
HEAT mode
115¡F (Outside air temperature)
HEAT)