Toshiba MMU-P0121H Service Manual page 42

3-6-2. Troubleshooting with CHECK Display of Remote Controller
3-6-2-1. In case of main remote controller/sub-remote controller
RBC-AM1E
1. Operation for CHECK display
When pushing the CHECK switch, the indoor unit No. (Group address No.) which sends the check code is
displayed at the right side of the set up TEMP. display section, and the check data of 2 errors/faults x 16 units
is displayed in the set up temp. display section.
If there is a filter display, the indoor unit No. which sends the filter signal is displayed at the right side of the
set up temp. display section, and then the check code is displayed as described above.
(1 display for 3 seconds)
MODE FA N T E M P.
F A N A N
CHECK ADDRESS CHECK ADDRESS
1 2 1 2
C O O L C O O L
H E AT H E A AU T U TO
F I X F I X
CENTRAL
MODE
FIL FILTER TER CHECK CHECK
ON/OFF
RBC-AS1E
UNIT ST STANDBY ANDBY
FILTER
PREHEAT PREHEA
DEFROST DEFR OST
LOUVER
MANUAL MANU
RESET switch
Push the switch in the hole with pin.
The remote controller resets the power supply.
(All data is cleared.)
CHECK switch
Push for 0.5 seconds to display CHECK code.
Push for 3 seconds to reset indoor microprocessor.
(While indoor microprocessor is locked by ALL STOP alarm)
Push for 10 seconds to clear check data.
LCD display "STANDBY"
is present.
• When phase-sequence of power
wiring is incorrect
• When combination of indoor units
is over capacity
• Indoor unit with command
excepted by operation mode
select switch
• When there is an indoor unit
which stopped with the indoor
overflow alarm "0b".
• Indoor unit with cooling operation
command excepted by heating
priority control
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