Service manual

28
2. INDOOR UNIT CONTROL
2-1COOL operation
Thermostat
Operation starts by
POWER button
ON.
ON
OFF
Indoor fan
ON
OFF
Auto vane
ON
OFF
Compressor
ON
OFF
w1 Even if the room temperature rises above the set temperature during this period, the compressor will not start until this period has ended.
LOW or HIGH
CLOSE CLOSE
LOW or HIGH
Depends on remote controller setting
MIN. 3 minutes w1
Room temperature
becomes equal to
set temperature.
Room temperature
rises above set
temperature.
Operation stops by
POWER button
OFF.
<COOL operation time chart>
(1)Compressor control
1 3-minute time delay
To prevent overload, the compressor will not start within 3 minutes after stop.
2 The compressor runs when the room temperature is higher than the set temperature.
The compressor stops when the room temperature is equal to or lower than the set temperature.
3 The compressor stops in check mode or during protective functions.
4 Coil frost prevention
To prevent indoor coil frost, the compressor will stop when the indoor coil thermistor (RT2) reads 1°C or below after the
compressor has been continuously operated for 16 minutes or more. The coil frost prevention is released under any of the
following conditions.
● The indoor coil thermistor rises to 10°C or above.
● The room temperature becomes equal to or lower than the set temperature.
● COOL mode is stopped or changed to another mode.
NOTE : By cutting the jumper wire JR02 on the indoor controller board, the temperature to start coil frost prevention
changes from 1°C to - 3°C
TEMP
ON / OFF
NOT AVAILABLE
AM
PM
AM
PM
˚C
PK-2.5FLA4
PK-3FLA5
PK-4FLSA4
<How to operate>
1 Press
[ ON/OFF button.
2 Press MODE button to set operation mode to COOL .
3 Set desired temperature with or button.
button.
NOTE: 1. Set temperature changes by 1 °C in the range 19-30 °C
each TEMP or button is pressed.
2. Set temperature is displayed on the LCD.
/
/
/
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PK-1.6FLA3
PK-2FLA3
PK-2.5FLA2/3
PK-3FLA2/3/4
PK-4FLSA2/3
OC129A-1.qxp 01.10.1 7:33 PM Page 28