Toshiba HWS-802XWHM3-E Outdoor Unit Failure Detection, Diagnosis procedure for each check code

9-4-2. Outdoor Unit Failure Detection

Diagnosis procedure for each check code

•One check code may indicate multiple symptoms. In such a case, see the LED indication on the outdoor board to narrow down the check details.

•The handy remote controller displays a check code only when the same failure repeatedly occurs while the LED on the outdoor board indicates an error even if it occurs only once. This may cause indication inconsistency between the remote controller and LED.

Outdoor board LED indication method

Dip switch setting

•Setting 1 only of SW803 to ON indicates the latest failure. Because the error history is recorded, you can see the detail even after the power is once turned off. (Not including outside air temperature sensor (TO) failure)

•After check work is done or when outside air temperature sensor (TO) failure is detected, set all the SW803 switches to OFF.

(An abnormality now is indicated.)

Indication switching

•One or more LEDs of D800 through D804 lit yellow indicates that a failure occurred. <Indication 1>

•With the status above, pressing the SW800 button for one second causes the yellow LED to blink. <Indication 2>

•Pressing again SW800 for one second or longer returns to <Indication 1>.

•The combination of <Indication 1> and <Indication 2> can determine what kind of abnormality.

<Latest abnormality>			<Abnormality now>
SW803 1 only is ON			SW803 All OFF (Initial status)
		4			4
		3			3
		2			2
	ON	1		ON	1

	<Indication 1>		<Indication 2>
	(Normal) (Abnormality occurs)(Press SW800)
D800	(yellow)
D801	(yellow)
D802	(yellow)
D803	(yellow)
D804	(yellow)
D805	(green)
	(Example of outlet temperature sensor failure)
	Off	Light	Blink

Check code	Outdoor LED			Check and Action procedure
	indication		(No specific description indicates outdoor unit parts.)
[H01]	<Indication 1> <Indication 2>	[Compressor fails]
			Power voltage is normal.		No
						Improve power line
			230ACV ± 23V	Yes
			Wiring connection is	normal.
					No	Check and correct wiring
			Compressor lead (Board side, compressor
						connection
			side reactor lead, power lead)
				Yes
			Abnormally over loaded		Yes	Deal with or remove causes
				No
			Check outdoor control board
			If defective, replace it

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