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4-2 Cold Draft Prevention (Heating Cycle)
The cold draft prevention function controls indoor fan speed so a strong draft of cold air will not blow out before
the indoor heat exchange coils have warmed up.
STANDBY shows on the remote controller when the indoor fan speed is LL (very low) or OFF. This condition
occurs in the following 3 cases:
• During Thermo OFF (refer to 2-1 B). Room Temperature Control, Heating)
• During the defrosting operation (refer to 2-10 Defrosting Control, Heating)
• Until either the coil temperature E2 reaches 27°C or when a maximum of 6 minutes has past.
The indoor fan motor operates in L instead of LL for 3 seconds as it starts to
give the fan an initial boost.
INDOOR UNIT
COIL TEMP .
E2 ( °C)
AUTO OR H
SET
FA N
SPEED
"STANDBY"
INDICATOR
the set fan speed as the coil temperature E2 rises.
The indoor unit's coil temperature is taken from sensor E2 located in the middle of the indoor
heat exchange coil.
The dotted line shows that the indoor fan motor is OFF . When the temperature at sensor E2
falls below 10°C, the indoor fan motor stops running.
33
MAX. 6 MINUTES
31
27
25
10
LL
LL/OFF
M
LL
LL/OFF
L
L L
LL/OFF
"STANDBY" APPEARS
LL= Very low speed
L= Low speed
Chart Summary and Explanations
LL
L
M
LL
L
M
LL
L
M= Medium speed
H= High speed
15
H
M
L
L
0673_X_S
Fig. 3
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