Sanyo CH1852 - Manual (Page 52)

48
■ 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 ON OFF Compressor OFF
ON OFF ON OFF Outdoor 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 seconds 30 seconds
LL
000-111 SM (18-68) 00.3.17 11:49 AM y [ W 48