OB274-41
MODE
THERMOSTAT
52C CONTACTOR
INDOOR FAN SPEED
COOL & COOL mode
of I FEEL CONTROL
DRY & DRY mode
of I FEEL CONTROL
FAN
ON
OFF
ON
OFF
OFF
ON
OFF
OFF
OFF for 2 min.
after unit starts operation
Repeat of 8 min. ON/ 3min.
OFF operation or 2 min.
ON/3 min. OFF operation
Repeat of 4 min. OFF/
1 min. ON operation
AUTO or set speed
AUTO or set speed
AUTO or set speed links with
52C CONTACTOR
AUTO or set speed
MODE
THERMOSTAT
52C CONTACTOR
INDOOR FAN SPEED
COOL & COOL mode
of I FEEL CONTROL
DRY & DRY mode
of I FEEL CONTROL
ON
AUTO or set speed
OFF for 5 min.
After that, OFF is
prolonged until
indoor coil thermistor
reads termination
temperature.
Indoor fan speed
High
Med.
Low
OFF
Relay turning ON
SR144
SR143
SR142
All fan relays are OFF.
AUTO or set speed
<MS12/15/17>
Low speed when coil frost prevention starts
while COMPRESSOR OFF
RELAY OPERATION
MS09TW
MS12TN
MS15TN
MS17TN
NOTE : Once the compressor is OFF, “3-minute time delay circuit” works at next start-up.
• COIL FROST PREVENTION
2. SOLID STATE RELAY (INDOOR FAN MOTOR RELAY)
MS12TN MS15TN MS17TN
1. COMPRESSOR CONTACTOR
• EACH MODE
