FILE NO. SVM-07008

(3) Checking procedure.

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 11-6-1

 

 

 

 

 

 

 

 

 

 

 

 

 

No.

ProcedureCheck Point (Symptom)

 

 

Causes

 

 

 

 

 

 

 

 

 

 

 

 

1

Shut off the power supply and

1. Is the fuse blown?

 

 

1.

Application of shock voltage.

 

 

remove the P.C. board assembly

 

 

 

 

 

 

 

Overload by short-circuit of the

 

 

from the electronic parts base.

 

 

 

 

 

 

 

parts.

 

 

Remove the connecting cable from

 

 

 

 

 

 

 

 

 

 

the terminal block.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

Remove the connector for the motor,

Voltage check

 

 

 

1.

AC power cord is defective.

 

 

and turn the power on.

1.Between F01 and CN01(pin 1)

 

 

Poor contact of the terminal plate.

 

 

If the OPERATION lamp blinks

(AC 220 ~ 240 V)

 

 

2.

 

Capacitor (C121) is defective.

 

 

(0.5 sec. : ON, 0.5 sec. : OFF) when

2.Between + and −of C03

 

 

Line filter (L01) is defective.

 

 

the power turning on, the checking

DC310~DC340V

 

 

 

 

Capacitor (C03) is defective.

 

 

points described as 1-4 of right

3. Between

 

and

 

 

 

 

Diode (D01,D02,D03, or D04)

 

 

5V

GND

 

 

 

 

column are not necessary to

4. Between

 

and

 

 

 

 

is defective.

 

 

12V

GND

 

 

 

 

perform.

 

 

 

 

 

3.

 

T101 is defective.

 

 

 

 

 

 

 

 

 

 

 

 

 

3

Start the operation with the system

1. All indicators light for 3 sec..

 

}

Defective indicator, or poor

 

 

which the time of the restart delay

2. Indicators do not indicate normally

 

 

 

 

housing assembly. (CN21)

 

 

timer is shortened.

after approximate 3 sec..

 

 

 

 

 

 

 

 

 

 

 

 

4

Make the operation status by

1. Compressor does not operate.

1.The temperature of the indoor

 

 

pressing once the [

 

] button.

2. OPERATION lamp blinks.

 

heat exchanger is abnormally

 

 

 

 

 

 

 

 

 

 

1.The time of the restart delay timer

 

 

 

 

 

 

lower.

 

 

is shortened.

 

 

 

 

 

2.Poor contact of the heat

 

 

2.Cool operation

 

 

 

 

 

 

exchanger sensor. (The connector

 

 

3.Air volume [AUTO]

 

 

 

 

 

 

is disconnected.) (CN62)

 

 

4. Make the setting temperature lower

 

 

 

 

 

3.Heat exchanger sensor, main

 

 

enough than room temperature.

 

 

 

 

 

 

P.C. board are defective. (Refer to

 

 

5. Continuous operation.

 

 

 

 

 

4.Main P.C. board is defective.

 

 

 

 

 

 

 

 

 

 

 

5

The status of No. 4 is continued, and

1. Compressor does not operate.

1. The temperature of the heat

 

 

make the following condition.

2. OPERATION lamp blinks.

 

exchanger is abnormally high.

 

 

1.Heat operation

 

 

 

 

 

2. The heat exchanger sensor

 

 

2.Make the setting temperature

 

 

 

 

 

 

connector has short-circuit. (CN62)

 

 

higher enough than room

 

 

 

 

 

3. The heat exchanger sensor is

 

 

temperature.

 

 

 

 

 

 

defective.

 

 

 

 

 

 

 

 

 

 

4. P.C. board is defective.

 

 

 

 

 

 

 

 

 

 

 

6

Turn the power on after connecting

1.Motor does not rotate. (The key

1. Poor contact of the motor

 

 

the motor connector. Start the

operation is accepted.)

 

connector.

 

 

operation with the following

2. The Motor rotates, but it vibrates

2. Fan motor is defective

 

 

condition.

too much.

 

 

 

 

 

 

 

1.Operation [Cooling]

2.Airflow [High fan]

3.Continuous operation

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