23
K Check of LEV (Expansion valve)
Replace the inverter P.C.
board.
No
Self-check (Refer to 10-2-1.) start.
Expansion valve operates in full-opening direction.
OK
NOTE
: After check of LEV, turn OFF the power supply and turn ON it again.
1. Regardless of normal or abnormal condition, a short beep
is emitted once the signal is received.
Measure each voltage between connector pins
of CN724 on the inverter P.C. board.
1. Pin (-) — Pin (+)
2. Pin (-) — Pin (+)
3. Pin (-) — Pin (+)
4. Pin (-) — Pin (+)
Is there about 3 ~ 5 VAC between each?
NOTE
: Measure the voltage with an analog tester.
Properly fix the LEV coil to the expansion valve.
Replace the LEV coil.
Replace the expansion valve.
Is LEV coil properly fixed to
the expansion valve?
Does the resistance of LEV
coil have the characteristics?
(Refer to 10-4.)
Do you hear the expansion valve "click,
click·······"?
Do you feel the expansion valve vibrate
on touching it ?
Yes
No
No
Yes
No
Yes
Yes
