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Heating
●
Room temperature control is obtained by cycling the compressor ON and OFF under control of the room tem-
perature 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.
●
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 pres-
sure, 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 compressor
operation.
●
Thermo. ON : When the room temperature is below T – 2°F (T°C is set temperature).
Compressor
➞
ON
●
Thermo. OFF : When the room temperature is equal to or above set temperature T°F.
Compressor
➞
OFF
*1: Refer to "8-6 Cold Draft Prevention".
NOTE
3 minutes 3 minutes 3 minutes 3 minutes 3 minutes 3 minutes
5 minutes 5 minutes
ON OFF ONOFFCompressor OFF
ON OFF ONOFFOutdoor fan OFF
Set speed
LL
LL
ON
OFF
OFF OFF ON OFF ON
*1
OFF
OFF
ON
ON ( Reversing cycle )
Thermo.
ON
Thermo.
OFF
Thermo.
ON
Thermo.
OFF
More than
5 minutes
Signal from remote control unit
T ¡F
T – 2 ¡F
T – 4 ¡F
set temp.
Indoor fan
Standby lamp
Indoor heat exch.
coil temp.
95 ¡F
77 ¡F
Solenoid coil
(4 – way valve)
Operation button
Room temp.
*1
Set speed
30 seconds30 seconds
LL
000-111 SM (18-68) 00.3.17 11:49 AM y[W 48