Toshiba RAV-104SBH-PE Service Manual page 94

NO. ITEM
Fan speed control
3
Cold draft prevention
4
control
Freeze preventing
5
control
(Low temp. release)
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7. OUTLINE OF CONTROL CIRCUIT
OUTLINE OF SPECIFICATION
3-1 [AUTO], [HIGH], [MED], [LOW] are available,
3-2 In the auto fan. The fan speed is changed by the
difference between Ta, Ts, as shown below.
COOL Mode
+2
"H"
+1
"M"
Ts
"L"
Room Temp (TA)
+3.5
+2.5
Tsc
+0.5
-0.5
Tsh
-2.5
-3.5
When performing heating
operation, indoor fan control is
carried out as follows based on
temperature detection of Tc sensor.
C zone: Depending upon fan
speed setting of the
remote controller
B zone: Indoor fan at Low
A zone: Fan stop
When performing cooling operation,
indoor fan control is carried out as
follows based on temperature
detection of Tc sensor.
1- When starting the operation,
the point P is made +3
2- When [J] zone is detected,
timer counting starts.
3- When [K] zone is detected,
timer count is stopped and
held on.
4- When [I] zone is detected, timer
is cleared and returns back to
ordinary operation.
5- When timer count becomes full time, the Outdoor Unit
stops and the point P is changed to +12
by check display.
When [I] zone is reached (12°C), the temperature is
returned back to +3
94
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HEAT Mode
"UL"
+1
"L"
Ts
"M"
-1
"H"
-2
Room Temp (TA)
AUTO Mode
"H"
"M"
"UL"
"L"
"UL"
"L"
"L"
"M"
"H"
Room Temp (TA)
o
( C)
C
30
B
26
20
A
10
Indoor Coil (TC)
(°C)
I
˚
C.
P
K
O
J
Indoor Coil (TC)
˚
C to be covered
˚
C.
REMARKS
Whilst in heating
mode, and the
compressor is turned
off, the fan speed can
be [Ultra Low] or
[Stop] (See note 4).
Tc is used to
prevent cold
drafts
Tc = Indoor coil
sensor
Full time
MIN 7 min.
MAX 20 min.
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