Toshiba RAV-HM301SDTY-E Service Manual page 65

Calling of error history
<Contents>
The error contents in the past can be called.
<Procedure>
1
Push and hold [TIME] button for more than 10 seconds,
and an indicator icon
troubleshooting history mode.
• [01] (01-04: Error record sequence) is displayed at CODE No.
• The SET DATA alternately displays the check code and the
error indoor unit number.
2
Each time push [▼] or [▲] button, the number (CODE No.)
of error history record will be displayed in order.
The error history record is displayed in the order from
[01] (latest) to [04] (oldest).
• Up to 4 error history records can be stored.
Warning:
In the error history mode, do not push and hold [MENU] button
for more than 10 seconds, otherwise, all error history records
of the indoor unit will be deleted. If push [MENU] button to
delete the error history, turn off the power, and then turn it on again.
When the last error that occurred before deletion occurs again in
succession, it may not be saved in the memory.
3
Push [ON/OFF] button to return to the normal mode after completing the check.
(Group control operation)
In a group control, operation of maximum 8 indoor units can be controlled by a remote controller.
Twin, triple or double twin of an outdoor unit is one of the group controls.
The indoor unit connected with outdoor unit (Individual/Header of twin) controls room temperature according to
setting on the remote controller.
<System example>
OUT
IN
1-1
Remote controller
1. Display range on remote controller
The setup range (Operation mode/Air volume select/Setup temp) of the indoor unit which was set to the header
unit is reflected on the remote controller.
1) Concealed duct high static pressure type (RAV-SMXXX) is not set up on the header unit.
• If the Concealed duct high static pressure type is the header unit:
Operation mode: [Cooling/Heating AUTO] [HEAT] [COOL] [FAN] and no [DRY]
Air volume select: [HIGH]
• When the operation mode is [DRY], [FAN] stops in concealed duct high static pressure models.
2. Address setup
If there is no serial communication between indoor and outdoor when the power is turned on, it is judged as
follower unit of the twin. (Every time when the power is turned on)
• The judgment of header (wired) / follower (simple) of twin is carried out every time. It is not stored in non-
volatile memory.
Turn on power of the indoor unit to be controlled in a group within 3 minutes after setting of automatic address.
If power of the indoor unit is not turned on within 3 minutes (completion of automatic address setting), the system
is rebooted and the automatic address setting will be judged again.
1) Connect indoor/outdoor connecting wire surely.
2) Check line address/indoor address/group address of the unit one by one.
3) The unit No. (line/indoor group address) which have been set once keep the present status as a rule if the unit
No. is not duplicated with one of another unit.
appears, indicating it is in the
OUT OUT
Header
IN IN
2-1 3-1
SET DATA [MENU]
OUT
IN
4-1
– 65 –
[TIME] [▼] [▲] [ON/OFF] CODE No.
OUT
IN
8-1
Max. 8 units