Toshiba RAV-SM1404UT-E 1.D501 Red, 2.D403 Red, 3.D503 Yellow: Main bus communication, 6.D15 Green

11-1-2. Forced Defrost Setup of Remote Controller (For wired remote controller only)

(Preparation in advance)

1 Push TEST + SET + CL buttons simultaneously for 4 seconds or more on the remote controller. (Push buttons while the air conditioner stops.)

The first displayed unit No. is the master indoor unit address in the group control.

2 Every pushing UNIT button, the indoor unit No. in the group control is displayed one after the other.

Select a main indoor unit (outdoor unit is connected) which is to be defrosted. In this time, fan and louver of the selected indoor unit operate.

3	Using the set temperature		TEMP.	buttons, specify the item code (DN) 8C.
4	Using the timer time TIME		buttons, set time to data 0001. (0000 at shipment)
5	Push SET button. (OK if indication lights)
6	TEST	button returns the status to the normal stop status.
	Pushing
(Practical operation)
• Push ON/OFF		ON / OFF Key.

•Select the HEAT mode.

•After while, the forced defrost signal is sent to the outdoor unit and then the outdoor unit starts defrost operation. (The forced defrost operation is performed for Max. 12 minutes.)

•After defrost operation finished, the operation returns to the heating operation.

To execute the defrost operation again, start procedure from above item 1 .

(If the forced defrost operation was executed once, setting of the above forced defrost operation is cleared.)

11-1-3. LED Display on P.C. Board

1.D501 (Red)

•It goes on (Goes on by operation of the main microcomputer) at the same time when the power supply is turned on.

•It flashes with 1-second interval (every 0.5 second): When there is no EEPROM or writing-in operation fails.

•It flashes with 10-seconds interval (every 5 second): During DISP mode

•It flashes with 2-seconds interval (every 1 second): While setting of function select (EEPROM)

2.D403 (Red)

•It goes on when power supply of the remote controller is turned on. (Lights on hardware)

3.D503 (Yellow): Main bus communication

•It goes on for 5 seconds in the first half of communication with the central controller.

4.D504 (Green): Sub bus communication

•It flashes for 5 seconds in the first half of communication with the remote controller. (Group master unit)

•It flashes with 0.2-second interval (for 0.1 second) for 5 second in the latter half of communication between master and follower in the Gr indoor unit.

5.D14 (Orange)

•It flashes while receiving the serial signal from the outdoor unit. (Hardware)

6.D15 (Green)

•It flashes while sending the serial signal to the outdoor unit. (Hardware)

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