Toshiba RAV-SM560AT-E Service Manual page 63

2. Outdoor fan control (Object: SM560)
The outdoor fan is controlled by TO sensor and the revolutions frequency of the compressor (rps).
The outdoor fan is controlled by every 1 tap of DC fan control (8 taps). According to each operation mode,
the fan is operated by selecting an outdoor fan operation tap in the following table based upon the conditions
of TO sensor and the compressor operation (rps).
Tap
Revolutions per
SM560
minute (rpm)
In cooling operation
Frequency of the
To 14
compressor (rps)
TO ≥ 38°C
F7
TO < 38°C F7
3. Coil heating control
1) This control function heats the compressor by turning on the stopped compressor instead of a case
heater. It purposes to prevent slackness of the refrigerant inside of the compressor.
2) As usual, turn on power of the compressor for the specified time before a test run after installation,
otherwise a trouble of the compressor may be caused. As same as a test run, it is recommended to turn
on power of the compressor beforehand when starting operation after power of the compressor has been
interrupted for a long time.
3) A judgment for electricity is performed by TD and TO sensors. If TO sensor is defective, a backup control
is automatically performed by TE sensor. For a case of defective TO sensor, judge it with the outdoor LED
display.
4) Coil heating is controlled by TD and TE sensor.
5) For every model, the power is turned off when TD is 30°C or more.
TO [˚C]
18
15
Power-ON condition
10
TD < 30˚C
8
* TD sensor is read in once per 15 minutes
TO [˚C]
10
9
4
3
2
1
Allocations of fan tap revolutions
F1 F2
960 870
To 14 35 to MAX
F4 F3
F5 F4
No power-ON
Continuous ON (L)
Continuous ON (M)
.
(Object: SM560)
No power-ON
Continuous ON (L)
Continuous ON (M)
Continuous ON (H)
F3 F4
870 870
In heating operation
Frequency of the
compressor (rps)
TO ≥ 5.5°C
TO < 5.5°C
(In trouble of sensor)
TO [˚C]
20
18
12
10
– 62 –
F5 F6 F7
750 700 540
To 14 To 14
F7 F6
F6 F6
No power-ON
Continuous ON (L)
Continuous ON (M)
SM800
L 20W and equivalent
M 40W and equivalent
SM560
L 10W and equivalent
M 20W and equivalent
H 30W and equivalent
F8
390
35 to MAX
F4
F3