Toshiba RAV-SP404ATZ-E service manual Latest error display, Error display, which occurs at present

<In case of SP80>

10-2-6. Diagnostic Procedure for Each Check Code (Outdoor Unit)

1)This section describes the diagnostic method for each check code displayed on the wired remote controller.

2)In some cases, a check code indicates multiple symptoms.

In this case, confirm LED display on the outdoor P.C. board to narrow the contents to be confirmed.

3)The check code on the remote controller is displayed only when the same error occurred continuously by multiple times while LED of the outdoor P.C. board displays even an error which occurred once. Therefore the display on the remote controller may differ from that of LED.

How to check LED display on outdoor P.C. board

Dip switch setup

•When turning on 1) only of SW803, the latest error is displayed. As the memory is stored, it can be confirmed even if the power supply is turned off once. (excluding outside temp. sensor (TO) error)

•When the work finished or the outdoor temp. sensor (TO) error was found, turn off all of SW803. (The error which occurs at present is displayed.)

<Latest error display>

Only 1) of SW803 is ON.

	4
	3
ON
	2
	1

<Error display, which occurs at present>

All SW803 are OFF. (Initial status)

	4
	3
ON
	2
	1

Display selection

•When an error happens, some of yellow LED (D800 to D804) turn on. <Display 1>

•If pushing the button switch SW800 for 1 second under the above condition, the yellow LED is displayed with flashing. <Display 2>

•When pushing SW800 for 1 second again, the status returns to <Display 1>.

•The error contents can be confirmed by combining <Display 1> and <Display 2>.

D800 (Yellow)

D801 (Yellow)

D802 (Yellow)

D803 (Yellow)

D804 (Yellow)

D805 (Green)

<Display 1> ó<Display 2>

(No error) (Error occurred)		(Push SW800)
l	¡	l
l	¡	l
l	l	¥
l	l	l
l	¡	l
¡	¡	¡

(Example of discharge temp. sensor error)

l: Go off, ¡ : Go on, ¥ : Flash

Check	Outdoor		Check and troubleshooting
code	LED display	(Item without special mention Indicates part of outdoor unit.)
[E04]	—	[Indoor/Outdoor communication error]
		Is setting of group address		NO
					Check Item code [14].
		of remote controller correct?
		YES
		Are inner wiring of indoor unit and		NO
					Correct wiring
		inter-unit wires (1, 2, 3) correct?			and inter-unit cable.
		YES
		Are CN04 connection and wiring		NO
					Correct wiring of connectors
		of terminal blocks (1, 2, 3) correct?			and terminal blocks.
		YES
		After turning off the power supply,		NO
					Check indoor P.C. board.
		turn on it again.
					Defect →	Replace
		Does D502 (Orange LED) flash?
		YES
					Check outdoor P.C. board.
					Defect →	Replace

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