Forced Defrost Setup Of Remote Controller (For Wired Remote Controller Only); Led Display On P.c. Board - Toshiba RAV-GM561UT-E Service Manual

9-1-2. Forced Defrost Setup of Remote Controller (For wired remote controller only)

(Preparation in advance)
1
Push + +
(Push buttons while the air conditioner stops.)
The first displayed unit No. is the header indoor unit address in the group control.
2
Every pushing
UNIT LOUVER
control is displayed one after the other.
Select a header 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
4
Using the timer time
5
Push button. (OK if indication lights)
6
Pushing button returns the status to the normal stop status.
(Practical operation)
• Push ON/OFF
• Select the HEAT mode.
• After a 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
(If the forced defrost operation was executed once, setting of the above forced defrost operation is cleared.)

9-1-3. 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
• For the indoor unit connecting to the central control device, D503 alternates between flashing for 5 seconds
and lighting for 5 seconds when the PC board receives the communication signal.
• For the indoor unit disconnecting to the central control device, D503 flashes every 5 seconds when the air
conditioner continues to stop the operation.
4. D504 (Green): Sub bus communication
• It flashes for 5 seconds in the first half of communication with the remote controller. (Group header unit)
• It flashes with 0.2-second interval (for 0.1 second) for 5 second in the latter half of communication between
header 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)
buttons simultaneously for 4 seconds or more on the remote controller.
button (button of the left side), the indoor unit No. in the group
buttons, specify the CODE No. (DN)
buttons, set time to data
button.
0001 0001 0001 0001 0001 0000 0000 0000 0000 0000
. (
– 69 –
8C 8C 8C 8C 8C
.
at shipment)
1
.