Troubleshooting - Toshiba RAV-HM301SDTY-E Installation Manual

IM_D0X7205001-01_EN.book Page 139 Friday, May 19, 2023 9:06 PM
12

Troubleshooting

 Confirmation and check
If a problem occurs with the air
conditioner, the OFF timer indicator
alternately shows the check code and
the indoor Unit No. in which the
problem occurred.
Check code
 Troubleshooting history and confirmation
You can check the troubleshooting history with the following procedure if a problem occurs with the air conditioner.
(The troubleshooting history records up to 4 incidents.)
You can check it during operation or when operation is stopped.
• If you check the troubleshooting history during OFF timer operation, the OFF timer will be canceled.
Procedure
Push the OFF timer button for over 10 seconds and the
indicators appear as an image indicating the troubleshooting
history mode has been entered. If [
displayed, the mode enters in the troubleshooting history mode.
• [01: Order of troubleshooting history] appears in the
1 temperature indicator.
• The OFF timer indicator alternately shows the [check code]
and the [indoor Unit No. ] in which the problem occurred.
Each time the setting button is pushed, the recorded
troubleshooting history is displayed in sequence.
The troubleshooting history appears in order from [01] (newest)
to [04] (oldest).
CAUTION CAUTION
2
In the troubleshooting history mode, DO NOT push the Menu
button for over 10 seconds, doing so deletes the entire
troubleshooting history of the indoor unit.
After you have finished checking, push the ON/OFF button to
return to the regular mode.
3
• If the air conditioner is operating, it remains operated even
after the ON/OFF button has been pushed.
To stop its operation, push the ON/OFF button again.
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The indoor Unit No. in which
the problem occurred.
Description of operation
Service check] is
1 2 3
– 139 –
 Check codes and parts to be checked
Wired
Wireless remote controller
remote
Sensor block display of
controller
receiving unit
display
Main defective parts
Operation Timer
Ready
Indication Flashing
GR GR OR
No header remote
controller
E01
Remote controller
communication
trouble
Remote controller
E02
transmission trouble
Indoor unit-remote
controller regular
E03
communication
trouble
Indoor unit-outdoor
unit serial
communication
trouble
E04
IPDU-CDB
communication
trouble
Duplicated indoor
E08
addresses
Duplicated header
E09
remote controllers
CPU-CPU
E10 communication
trouble
Communication
trouble between
E11
Application control kit
and Indoor unit
Header unit follower
unit regular
E18
communication
trouble
IPDU communication
E31
trouble
Indoor unit heat
F 0 1 A L T exchanger sensor
(TCJ) trouble
Indoor unit heat
F 0 2 A L T exchanger sensor
(TC) trouble
Outdoor unit
F 0 4 A L T discharge temp.
sensor (TD) trouble
Outdoor unit temp.
F 0 6 A L T sensor (TE / TS)
trouble
F 0 7 A L T T L s e n s o t r o r
Outdoor unit outside
F 0 8 A L T air temp. sensor
trouble
Indoor unit room
F 1 0 A L T temp. sensor (TA)
trouble
Judging
Parts to be checked / trouble description
device
Incorrect remote controller setting --- The header
remote controller has not been set (including two
remote controllers).
Remote
controller
No signal can be received from the indoor unit.
Indoor / outdoor connecting wires, indoor P.C. board,
Remote
remote controller
controller
--- No signal can be sent to the indoor unit.
Remote controller, network adapter, indoor P.C.
Indoor board --- No data is received from the remote
controller or network adapter.
Indoor / outdoor connecting wires, indoor P.C. board,
Indoor outdoor P.C. board --- Serial communication trouble
between indoor unit and outdoor unit
Indoor address setting trouble --- The same address
Indoor
as the self-address was detected.
Remote controller address setting trouble --- Two
remote controllers are set as header in the double-
Remote
remote controller control.
controller
(* The header indoor unit stops raising alarm and
follower indoor units continue to operate.)
Indoor P.C. board --- Communication trouble between
Indoor
main MCU and motor microcomputer MCU
Communication trouble between Application control
Indoor
kit and Indoor unit
Indoor P.C. board --- Regular communication is not
Indoor possible between header and follower indoor units or
between twin header (main) and follower (sub) units.
Outdoor Communication trouble between IPDU and CDB
Heat exchanger sensor (TCJ), indoor P.C. board ---
Indoor Open-circuit or short-circuit of the heat exchanger
sensor (TCJ) was detected.
Heat exchanger sensor (TC), indoor P.C. board ---
Indoor Open-circuit or short-circuit of the heat exchanger
sensor (TC) was detected.
Outdoor temp. sensor (TD), outdoor P.C. board ---
Outdoor Open-circuit or short-circuit of the discharge temp.
sensor was detected.
Outdoor temp. sensors (TE / TS), outdoor P.C. board
Outdoor --- Open-circuit or short-circuit of the heat exchanger
temp. sensor was detected.
TL sensor may be displaced, disconnected or short-
u b e l O u d t o r o
circuited.
Outdoor temp. sensor (TO), outdoor P.C. board ---
Outdoor Open-circuit or short-circuit of the outdoor air temp.
sensor was detected.
Room temp. sensor (TA), indoor P.C. board --- Open-
Indoor circuit or short-circuit of the room temp. sensor (TA)
was detected.
Air
conditioner
status
*
*
Auto-
reset
Auto-
reset
Auto-
reset
*
Auto-
reset
Entire
stop
Auto-
reset
Entire
stop
Auto-
reset
Auto-
reset
Entire
stop
Entire
stop
Entire
stop
Operation
continued
Auto-
reset
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