Mitsubishi Electric PK12FK Technical & Service Manual page 27

COOLING OPERATION
COOL operation
NO
NO
NO
NO
Downward discharge
Vane horizontal
Vane setting notch
8 When operation stops or changes to cooling or dry mode, the auto vane turns to a horizontal angle. IF operation changes
during auto vane SWING, the auto vane will continue to swing.
9 When operating TEST RUN, the thermostat will be continuously ON.
10After 3 minute compressor operation, if the indoor coil thermistor reads -5°F or below for 3 minutes, the compressor will
stop for 6 minutes.
11Cooling area : Indoor coil temperature is more than 5 degrees above the room temperature.
Heating area : Indoor coil temperature is more than 5 degrees below the room temperature.
FAN area : Indoor coil temperature is within 5 degrees either way of the room temperature.
Four-way valve/OFF
Initial
COOLING
8 YES
Vane initial
setting
Vane
60 deg downward angle
70 deg downward angle
YES
Fan speed
LOW
YES
1 hour
YES
airflow
NO
9
Compressor YES
thermostat
ON
NO
Allowance
cancel
NO
YES
3-minute
time delay
NO
YES 6-minute
time delay
NO
3-minute
NO
compressor operation
YES
10
YES
Coil frost
prevention
NO
11
NO
Cooling area
YES
10-minute
NO
compressor operation
YES
Allowance cancel
YES
Coil frost
protection
NO
16-minute
NO
compressor operation
YES
Indoor pipe
YES
temperature is
34 ¡ F or lower
NO
Coil frost
prevention
Compressor ON Compressor OFF
1
YES
Allowance
period
NO
6 minute
time delay
Allowance set
NO
1 min continue
YES
FAN speed
LOW
FAN speed
LOW 5 min
elapse
NO
Indoor coil
tempreature is NO
50 ¡ F or higher
Outdoor unit
YES
3-minute
time delay
Coil frost
prevention release
Coil frost protection
YES
trouble
27