Mitsubishi Electronics MSZ-FA35VA, MSZ-FA25VA service manual Continuously flash?, AIR Purifying 0V?

When PLASMA/WASH lamp flashes 2-time.

wThe power failure mode for PLASMA AIR PURIFYING power is memorized when the failure mode is called.

G Check of PLASMA AIR PURIFYING power

After performing the check, make sure to release the failure mode recall function.

Turn ON the power supply.

High voltage (approx. -3.9kV) is generated during PLASMA AIR PURIFYING power operation.

Pay careful attention and never touch PLASMA/WASH unit and the high-voltage lead part (red wire).

While the operation is being	Yes
stopped, does		Replace the indoor electronic control P.C. board is out of order.
PLASMA/WASH lamp flash
twice?		1 During pressing both OPERATION SELECT
No		button and TOO COOL button on the remote
Make sure that the front panel is firmly closed.		controller at the same time, press RESET button.
		2 First, release RESET button.
1 During pressing both OPERATION SELECT button and		And release the other two buttons since
TOO COOL button on the remote controller at the same time,		all LCD in operation display section of the
press RESET button.		remote controller is displayed after 3 seconds.
2 First, release RESET button.		(Failure mode recall function is set.)
And release the other two buttons since		3 Press OPERATE/STOP (ON/OFF) button.
all LCD in operation display section of the		4 After a short beep sound is emitted, press
remote controller is displayed after 3 seconds.		twice PLASMA button.
(Failure mode recall function is set.)		PLASMA AIR PURIFYING operation is
3 Press OPERATE/STOP (ON/OFF) button.		selected.

4After a short beep sound is emitted, press

twice PLASMA button.	PLASMA AIR
PLASMA AIR PURIFYING operation is
	PURIFYING
selected.
	operation
wThe plasma power operation check mode is set.(Refer to 9-2.5.)

Does PLASMA/WASH lamp stay OFF, or	Stays OFF
continuously flash?

PLASMA AIR PURIFYING power supply is normal. The front panel is not firmly closed, therefore the protection by the interlock switch is active.

				w1 Turn PLASMA AIR PURIFYING power OFF and ON again.
		Continuously flashes.		(For turning off PLASMA AIR PURIFYING power, refer to 9-2.3.)
				(If it goes normal without turning OFF and ON, PLASMA/WASH lamp
				doesn't go OFF.
	Remove the plasma unit, firmly close the				If the plasma unit is dirty, clean the unit.
					After cleaning, make sure to attach the unit when it is
	front panel, and then perform PLASMA AIR		Stays OFF
					completely dry.
	PURIFYING power operation check (w1).
					If the air conditioner goes ON with the plasma unit
	Does PLASMA/WASH lamp stay OFF, or
					being wet, protection gets active and PLASMA/WASH
	continuously flash?
					lamp continuously flashes.
		Continuously flashes.
	Turn OFF the power supply, and check the		No
	SAFETY DEVICE(PLASMA UNIT).				Firmly fix the SAFETY DEVICE.
	Is it firmly fixed?
		Yes
Turn ON and OFF the SAFETY DEVICE			No
(PLASMA UNIT) using something like a screw
driver, and measure the resistance value between					Replace the SAFETY DEVICE(PLASMA UNIT).
CN1T2 1 and 3 on the indoor electronic control
P.C. board. Does the switch work?
		Yes
	Keep the SAFETY DEVICE(PLASMA UNIT)		No
	ON using something like a screw driver.
			9.5V DC is generated.
	Turn ON the power supply.
	While the operation is being stopped, is the				Replace the indoor electronic control P.C. board.
	voltage between CN1 1(+) and 2(GND) on
	the PLASMA POWER P.C. board (PLASMA
	AIR PURIFYING) 0V?
		Yes
Set the plasma power failure mode recall function.
	When PLASMA button is pressed, is		No		Replace the indoor electronic control P.C. board.
	there voltage of 12.5V DC between CN1				Check the wiring of CN1T1 on the indoor electronic control
	1(+) and 2(GND)?				P.C. board.
		Yes
	Replace the PLASMA POWER P.C. board
	(PLASMA AIR PURIFYING).

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