5 Control System
150
SMGB0087 rev.0 - 12/2013
Pressing
RUN/STOP
switch
STOP
Power to
outdoor unit:
OFF
LCD indication: OFF
Power to PCB in indoor unit: OFF
from 1
Power to CMC: OFF
RUN/STOP lamp: OFF
HEAT, set fan speed and set temperature indication: continuously ON
Power to PCB in outdoor unit: OFF
Power to CH: OFF
Stop of inverter
Stop of MC
Tem-
perature on
the top of comp.
Power to CH: ON
Power to CH: OFF
(for RAS-(2-2.5)HVNP and
RAS-3HVNC < 60ºC)
< Td target temperature -15ºC
(for RAS-(2-2.5)HVNP and
RAS-3HVNC ≥ 60ºC)
≥ Td target temperature -10ºC
Power to Y52C or RY1: ON
Stop of MOF
IU air
outlet temp.
Heating operation
Lower than
+2ºC in set
temp.
IU
air
intake temp.
Higher than
+2ºC in set
temp.
Thermo-OFF
IU
air
intake temp.
Higher than
set temp.
Lower than
set temp.
A
Control of MOF fan speed
(including stop)
MIF operation at low fan
speed
Control of MC frequency
(including stop)
Indoor fan motor MIF: OFF
Slow fan speed
IU
dischar-
ge air temp.
Ope-
ration at slow
speed
Shorter than
2 min.
Lower than 50 ºC
Higher than 50 ºC
Higher
than
40 ºC
Lower than 40 ºC
After 2 min.
Power to
indoor unit:
OFF
Reset of timer for
defrosting
IU: Indoor unit
OU: Outdoor unit
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