Toshiba RAV-SM802CT-E Coil heating control, In trouble of TE sensor, Object SM56, SM80

15

18

21

24

TE [˚C]

+1 tap/20 seconds

rpm hold

–1 tap/20 seconds

–2 tap/20 seconds

–2 tap/20 seconds STOP timer count

2)Heating fan control

Q The outdoor fan is controlled by TE sensor, TO sensor and the operation frequency. (From Min. W1 to Max. are controlled according to the following table.)

R During 3 minutes after start-up, the fan is fixed

with the maximum fan tap corresponding to zone in the following table. After then the fan is controlled by temperature of TE sensor.

S If status, TE > 24°C continues for 5 minutes, the operation stops. This status is same to the usual Thermo-OFF which has no alarm display, and the fan restarts after 2 minutes and 30 seconds. This intermittent operation is not abnormal.

T When the above status R occurs frequently, it is considered that the filter of suction part of the indoor unit is stain. Clean the filter and then restart the operation.

(The operation frequency differs according to the model type. The case of SM110 is shown in the table below.)

	Temp. range	Below 33 Hz	Above 33 Hz below 51 Hz	Above 51 Hz
	10°C < TO	W7	W8	W9
Maximum	5 < TO < 10°C	WA	WB	WF
	TO < 5°C	WF	WF	WF
	TO error	WF	WF	WF

5.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.

(In trouble of TE sensor)

TO [˚C]

18

Power-ON condition 15

TD < 30˚C10

8

	TE [˚C]
No power-ON	20
	18
Continuous ON (L)	12
	10
Continuous ON (M)

No power-ON

Continuous ON (L)

Continuous ON (M)

* TD sensor is read in once per 15 minutes. * TO sensor is read in once per 15 minutes

	(Object: SM56, SM80)
TE [˚C]
0		No power-ON
–1
–6		Continuous ON (L)
–7
		Continuous ON (H)

SM110, SM140

L20W and equivalent

M 40W and equivalent

SM56, SM80

L10W and equivalent

H 30W and equivalent

– 78 –