Toshiba RAS-M13EKCVP-E, RAS-M18EACV-E, RAS-M14EACV-E + ~ ~, Checking Method for Each Part, 99

No.

Part name

Checking procedure

5

Outdoor temperature sensor

Disconnect the connector, and measure resistance value with the

(TO), discharge temperature

tester. (Normal temperature)

sensor (TD), suction

Temperature

temperature sensor (TS),

10°C

20°C

30°C

40°C

50°C

Sensor

outdoor heat exchanger

TD (kΩ)

100

64

41

27

18

temperature sensor (TE),

A room gas side temperature

TGa, TGb (Cooling only)

20.6

12.6

10.0

5.1

3.4

sensor (TGa), B room gas

TO, TE, TS (kΩ)

side temerature sensor (TGb)

TGa, TGb (Heat Pump) (kΩ)

20.5

12.5

10.0

5.3

3.6

6

4-way valve coil

Measure the resistance value of winding by using the tester.

(Model : VHV)

Resistance value

1435±144 Ω

Under 20°C

7

Electronic control valve coil

Measure the resistance value of winding by using the tester.

(Model : CAM-MD12TF-1)

1 W

Position

Resistance value

COM

6

R

Red - White

42 to 50kΩ

3

O

White - Orange

42 to 50kΩ

Brown- Yellow

42 to 50kΩ

Y BR BL

Brown- Blue

42 to 50kΩ

COM 2 5 4

Under 20°C

11-9-5. Checking Method for Each Part

No.	Part name		Checking procedure
1	Electrolytic capacitor	1. Turn OFF the power supply breaker.
	(For boost, smoothing)	2.	Discharge all three capacitors completely.
		3.	Check that safety valve at the bottom of capacitor is not broken.
		4.	Check that vessel is not swollen or exploded.
		5.	Check that electrolytic liquid does not blow off.
		6.	Check that the normal charging characteristics are shown in continuity test
			by the tester.

		side	C12 C13 C14	Case that product is good
		IGBT		Pointer swings once, and returns
		sink	MCC-5009	slowly. When performing test
		Heat		once again under another polarity,
			Soldered	the pointer should return.
			surface
		C12, C13, C14 → 760µF/400V
2	Diode block	1. Turn OFF the power supply breaker.

2.Completely discharge the four electrolytic capacitors.

3.Remove the diode block from the PCB (which is soldered in place).

4.Use a multimeter with a pointer to test the continuity, and check that the diode block has the proper rectification characteristics.

	+								10 to 20 Ω
1				Tester rod				Resistance value
									when the
				+		–		in good product
									multimeter
				~
~	~	+ ~ ~	–		2	+
									probe is
3	2			~			1	∞
		1 2 3 4			3				reversed
				–		~	2
–	4	(DBO1)			4	~ 3

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