COOLING OPERATION

COOL operation

Four-way valve/OFF

NO

 

 

 

Initial

 

 

 

w 8

COOLING

 

 

 

YES

 

 

 

 

Vane initial

 

 

 

 

setting

NO

 

 

 

Vane

 

40 deg downward angle

 

 

60 deg downward angle

 

NO

 

YES

 

Fan speed

 

 

 

 

 

 

 

LOW

 

NO

 

 

YES

 

 

Downward discharge

 

 

 

 

 

 

 

1 hour

 

 

 

 

YES

Vane setting notch

Vane horizontal

airflow

 

w 9

NO

Compressor YES thermostat

ON NO

Allowance cancel

NO YES

3-minute

 

 

 

time delay

 

 

 

NO

 

 

YES

6-minute

Allowance

YES

 

time delay

period

 

 

 

NO

 

 

NO

 

 

 

 

 

 

6 minute

 

 

 

 

 

 

 

 

 

NO

 

3-minute

 

 

time delay

 

 

 

compressor operation

 

 

 

 

 

 

 

YES

 

 

Allowance set

 

Coil frost protection

 

w 10

 

 

 

 

 

 

Coil frost

YES

 

 

 

 

 

 

prevention

 

 

 

 

 

 

 

NO

 

 

 

 

 

w 11

 

 

NO

 

 

 

 

 

Cooling area

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

NO

 

10-minute

 

 

NO

 

 

 

compressor operation

 

 

1 min continue

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

YES

 

 

Allowance cancel

 

 

 

 

 

 

 

 

FAN speed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOW

 

 

 

Coil frost

YES

 

 

 

 

 

 

protection

 

 

 

FAN speed

YES

 

 

NO

 

 

 

 

 

 

 

 

LOW 5 min

 

NO

 

16-minute

 

Indoor coil

NO

elapse

 

 

 

NO

 

 

compressor operation

 

temperature is

 

 

 

 

 

 

50°F or higher

 

 

Outdoor unit

 

 

YES

 

YES

 

 

trouble

 

 

 

 

 

 

 

 

Indoor coil

YES

3-minute

 

 

 

 

temperature is

 

time delay

 

 

 

 

34°F or lower

 

 

 

 

 

 

 

NO

Coil frost

Coil frost

 

 

 

 

 

 

prevention

prevention release

 

 

Compressor ON

Compressor OFF

1

w8 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.

w9 When operating TEST RUN, the thermostat will be continuously ON.

w10 After 3 minute compressor operation, if the indoor coil thermistor reads -59°F or below for 3 minutes, the compressor will stop for 6 minutes.

w11 Cooling 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.

OC277-24

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Mitsubishi Electronics PCH24GK, PCH36GK, PCH30GK, PCH42GK specifications OC277-24, Cooling Operation