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4-3. Outdoor unit Electronic Expansion Valve (EEV)

¢ Models: AOHG36KRTA, AOHG45KRTA, and AOHG54KRTA

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 02-37.

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 ± 3 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.

4-3. Outdoor unit Electronic Expansion Valve (EEV) - (03-61) - 4. Service parts information

TROUBLESHOOTING

Fujitsu ARXG24KMLA Service Manual

Other manuals for Fujitsu ARXG24KMLA