Mitsubishi Electric SUZ-KA60VA3, Техническое и сервисное руководство

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Press OPERATE/STOP (ON/OFF) button of the remote
controller (the set temperature is displayed) with the
remote controller headed towards the indoor unit. *1
Expansion valve operates in full-opening direction.
OK
NOTE : After check of LEV, do the undermentioned operations.
1. Turn OFF the power supply and turn it ON again.
2. Press RESET button on the remote controller.
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 by an analog
tester.
Properly fi x the LEV coil to the expansion valve.
Replace the inverter P.C.
board.
Replace the LEV coil.
Replace the expansion valve.
Is LEV coil properly fi xed to
the expansion valve?
Does the resistance of LEV
coil have the characteristics?
(Refer to 11-4.)
Do you hear the expansion valve "click,
click·······"?
Do you feel the expansion valve vibrate
on touching it ?
Turn ON the power supply.
<Preparation of the remote controller>
While pressing both OPERATION SELECT button and
TOO COOL button on the remote controller at the same
time, press RESET button.
First, release RESET button.
And release the other two buttons after all LCD except the
set temperature in operation display section of the remote
controller is displayed after 3 seconds.
Yes
No
No
Yes
No
Yes
No
Yes
k Check of LEV
ON/OFF
RES
ET
TOO
WARM
TOO
COOL
MOD
E
AUTO
COOL
DRY
HEAT
FAN
VANE
SELECT
TIME
ON/OFF
TOO
WARM
TOO
COOL
h
Turn on power supply to the outdoor unit after checking
LEV coil is fi xed to the LEV body securely.
Yes
Disconnect the connector CN724 is there nor-
mal resistance to LEV coil?
No
Replace the inverter P.C. board.
Replace the LEV coil.
No
Normal
Start
Is "click - click" sound heard?
Or, do you feel vibration of the LEV coil with a hand?
Yes
k Check of LEV
(For wired remote controller use model)
*1. Regardless of normal or abnormal condition, a short beep is
emitted once the signal is received.
(For wireless remote controller use model)
[SUZ-KA60/71VA3.TH]
OCH530