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5. 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).
Allocations of fan tap revolutions
Tap
SM560
Revolutions per
minute (rpm)
F1 F2 F3 F4 F5 F6 F7 F8
960 870 870 870 750 700 540 390
In cooling operation In heating operation
6. 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.
Frequency of the
compressor (rps)
TO ≥ 38°C
TO < 38°C
To 14 To 14 35 to MAX
F7 F4 F3
F7 F5 F4
* TD sensor is read in once per 15 minutes
.
No power-ON
Continuous ON (L)
Continuous ON (M)
No power-ON
Continuous ON (L)
Continuous ON (M)
Continuous ON (H)
No power-ON
Continuous ON (L)
Continuous ON (M)
Power-ON
condition
TD < 30˚C
(In trouble of sensor)
(Object: SM560)
TO [˚C] TO [˚C]
TO [˚C]
20
18
12
10
18
15
10
8
10
9
4
3
2
1
L
M
SM800 SM1100 SM1400
20W and equivalent 20W and equivalent 25W and equivalent
40W and equivalent 40W and equivalent 50W and equivalent
Frequency of the
compressor (rps)
TO ≥ 5.5°C
TO < 5.5°C
To 14 To 14 35 to MAX
F7 F6 F4
F6 F6 F3
L
M
H
SM560
10W and equivalent
20W and equivalent
30W and equivalent