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¢ Model: AOYG14KMCC

Check point 1. Check connections

Check connection of connector. (Loose connector or open cable)

NOTE: For details of wiring diagram, refer to "Wiring diagrams" in Chapter 2. TECHNICAL DATA

AND PARTS LIST on page 02-19.

Check point 2. Check coil of EEV

Remove connector, check each winding resistance of coil.

Read wire Resistance value

1 (Red) - 2 (Blue)

46 Ω ±4 Ω at 20°C

1 (Red) - 3 (Orange)

1 (Red) - 4 (Yellow)

1 (Red) - 5 (White)

→ If Resistance value is abnormal, replace EEV.

Check point 3. Check Voltage from main PCB

Remove connector and check voltage (DC 12 V)

→ If it does not appear, replace main PCB.

Check point 4. Check noise at start up

Turn on the power and check the operation noise.

→ If an abnormal noise does not show, replace main PCB.

Check point 5. Check Opening and Closing Operation of Valve

When valve is closed, it has a temp. difference

between inlet and outlet

Pipe (In)

Pipe (Out)

Hi TEMP.

Normal TEMP.

Example : Hot Gas

If it is open, it has no temp. difference between

inlet and outlet

Pipe (In)

Hi TEMP.

OPEN

Example : Hot Gas

Pipe (Out)

Hi TEMP.

5-3. Outdoor unit Electronic Expansion Valve (EEV) - (03-70) - 5. Service parts information

TROUBLESHOOTING

Fujitsu AOYG14KMCC User Manual

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