Cooling Operation - Mitsubishi Electric PKH18FK Technical & Service Manual

COOLING OPERATION

NO
NO
Vane setting notch
w8 When operation stops or changes to cooling or dry mode, the auto vane turns to a horizontal angle. IF opera-
tion changes during auto vane SWING, the auto vane will continue to swing.
w9 When operating TEST RUN, the thermostat will be continuously ON.
w10After 3 minute compressor operation, if the indoor coil thermistor reads -59°F or below for 3 minutes, the com-
pressor will stop for 6 minutes.
w11Cooling area : Indoor coil temperature is more than 9 degrees above the room temperature.
Heating area : Indoor coil temperature is more than 9 degrees below the room temperature.
FAN area : Indoor coil temperature is within 9 degrees either way of the room temperature.
COOL operation
Four-way valve/OFF
Initial
COOLING
w 8
YES
Vane intial
setting
Vane
60 deg downward angle
70 deg downward angle
YES
NO
Fan speed
LOW
YES
NO
Downward discharge
1 hour
YES
Vane horizontal
airflow
w 9
NO
Compressor YES
thermostat
ON
NO
Allowance
cancel
NO
YES
3-minute
time delay
NO
YES 6-minute
time delay
NO
3-minute
NO
compressor opration
YES
w 10
Coil frost
prevention
NO
w 11
Cooling area
YES
10-minute
NO
compressor operation
YES
Allowance cancel
Coil frost
protection
NO
16-minute
NO
compressor operation
YES
Indoor pipe
temperature is
34¡F or lower
NO
Compressor ON
1
Aliowance
period
6 minute
time delay
Allowance set
YES
NO
YES
NO
Indoor coil
tempreature is
50¡F or higher
YES
3-minute
YES
time delay
Coil frost Coil frost
prevention prevention release
Compressor OFF
YES
NO
Coil frost protection
NO
1 min continue
YES
FAN speed
LOW
YES
FAN speed
LOW 5 min
elapse
NO
Outdoor unit
trouble
27