12
NOTA
●
The control circuit will not attempt to turn the compressor ON until the compressor has been OFF for at least
5 minutes. To protect the compressor from stalling out when trying to start against the high side refrigerant
pressure, the control circuit has a built-in automatic time delay to allow the internal pressure to equalize.
●
As a protective measure, the control circuit switches the compressor OFF after 5 minutes or more of com-
pressor operation.
●
Thermo ON:
When the room temperature is above T + 1 °C (T°C is set temperature).
Compressor
➜
ON.
●
Thermo OFF: When the room temperature in equal to or below set temperature T°C.
Compressor
➜
OFF.
Heating
●
Room temperature control is obtained by cycling the compressor ON and OFF under control of the room
temperature sensor in the remote control unit.
●
The room temperature (and other information) is transmitted every 3 minutes by the remote control unit to
the controller in the indoor unit.
ON
OFF
5 MINUTI
ON
OFF
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
ON
ON (REVERSING CYCLE)
OFF
OFF
ON
ON
OFF
ON
OFF
SET SPEED
SET SPEED
5 MINUTES
ROOM TEMP.
30 SECONDS
30 SECONDS
MORE THAN
5 MINUTES
3 MINUTES
3 MINUTES
3 MINUTES
3 MINUTES
3 MINUTES
3 MINUTES
THERMO.
ON
THERMO.
OFF
THERMO.
ON
THERMO.
OFF
SIGNAL FROM REMOTE CONTROL UNIT
COLD DRAFT PREVENTION
SET.
TEMP.
T °C
T -1 °C
T -2 °C
COMPRESSOR
OUTDOOR
FAN
INDOOR
FAN
STANDBY LAMP
INDOOR HEAT EXCH. COIL
TEMP. 35 °C
SOLENOID
(4 WAY-VALVE)
OPERATION
BUTTON
25 °C
