Outdoor Unit Electronic Expansion Valve (Eev) - Fujitsu ASYG07KMCF Service Manual

5-3. Outdoor unit Electronic Expansion Valve (EEV)

¢ Models: AOYG07KMCC, AOYG09KMCC, and AOYG12KMCC
Check point 1. Check connections
Check connection of connector. (Loose connector or open cable)
NOTE: For details of wiring diagram, refer to
AND PARTS LIST on page 02-19.
Check point 2. Check coil of EEV
Remove connector, check each winding resistance of coil.
Read wire
White - Red
Yellow - Red
Orange - Red
Blue - Red
→ 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
CLOSE
Example : Hot Gas
Pipe (In)
Hi TEMP.
5-3. Outdoor unit Electronic Expansion Valve (EEV)
"Wiring diagrams"
Resistance value
46 Ω ±3.7 Ω
at 20°C
If it is open, it has no temp. difference between
inlet and outlet
Pipe (Out)
Normal TEMP.
- (03-68) -
in Chapter 2. TECHNICAL DATA
OPEN
Example : Hot Gas
Pipe (In)
Hi TEMP.
Pipe (Out)
Hi TEMP.
5. Service parts information