Mitsubishi Electric PKH18FK Technical & Service Manual page 35

2-2 DRY operation
-CENTRALLY CONTROLLED-
POWER
STAND BY
ON
DEFROST
CHECK DRY
HEAT AUTO
HEAT COOL
CHECK SET
WARMER
F
SET TEMP TEMPERATURE
TIMER OFF
AUTO STOP TIMER MODE
HR
AUTO START
FAN SPEED LOW/HIOGH
LOW HIGH
AIR
UP/DOWN
DISCHARGE
F
AUTO RETURN
CHECK
CHECK TEST RUN
MITSUBISHI ELECTRIC
<DRY operation time chart>
Thermostat
Indoor fan
Auto vane
Booster heater
Compressor
w1 Even if the room temperature dispayed on remote controller above the set temperature during this period, the compressor will not start until this period
has ended.
(1) Compressor control
13-minute time delay
To prevent overload, the compressor will not start within 3 minutes after stop.
2The compressor runs when the room temperature displayed on remote controller
is higher than the set temperature.
The compressor stops when the room temperature displayed on remote controller
is equal to or lower than the set temperature.
3The compressor stops in check mode or during protective functions.
4The compressor will not start when the room temperature displayed on remote controller
is below 64°F.
The compressor starts intermittent operation when the power is turned ON with room temperature above 64°F. The com-
pressor ON/OFF time depends on the thermostat ON/OFF and the following room temperatures.After 3-minute compres-
sor operation,
If the room temperature thermistor reads above 82°F with thermostat ON, the compressor will operate for 6 more min-
utes and then stop for 3 minutes.
If the room temperature thermistor reads 79°F—82°F with thermostat ON, the compressor will operate for 4 more min-
utes and then stop for 3 minutes.
If the room temperature thermistor reads 75°F—79°F with thermostat ON, the compressor will operate for 2 more min-
utes and then stop for 3 minutes.
If the room temperature thermistor reads below 75°F with thermostat ON, the compressor will stop for 3 minutes.
If the thermostat is OFF regardless of room temperature, the compressor will stop for 10 minutes.
5Coil frost protection in DRY operation is the same as in COOL operation.
6Coil frost prevention does not operate in DRY operation.
(2) Indoor fan control
The indoor fan runs on LOW speed during compressor operation. The fan speed cannot be changed with the remote con-
troller. Also, the indoor fan does not run during compressor OFF.
(3) Auto vane & drain pump controls
Same as in COOL operation
(4) Detecting abnormalities in the outdoor unit
An abnormality in the outdoor unit can not be detected in DRY operation.
ON/OFF
COOL/DRY
COOLER
HOURS
SWING
STOP
TEST RUN
Operation starts by
P O W E R b u t t o n
ON.
ON
OFF
LOW speed
ON
OFF
Initally 10 degrees discharge
30
( Changeable by remote controller setting )
CLOSE
ON
OFF
OFF
ON
OFF
<How to operate>
1 Press POWER ON/OFF button.
2 Press COOL / DRY button to set operation mode to DRY.
NOTE : "Cool" and "DRY" are alternately displayed each time
COOL / DRY button is pressed.
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.
The room temperature The room temperature
dislayed on remote con- dislayed on remote con-
troller becomes equal to troller rises
set temperature. temperature.
w
Minimum 3 minutes 1
Operation stops by
P O W E R b u t t o n
above set
OFF.
LOW speed
30
CLOSE
35