Toshiba BMS-SM1280HTLE Service Manual page 44

No. Check item
2 Controller operation
check
No.
1. 1.Turn on the controller and check that the LCD displays "Line" and "All".
×
NG:
The frame line only is
displayed; no "Line" or
"All" are displayed.
2. 3.Check that the LCD displays the group numbers of all the indoor units connected.
When the indoor units are connected to Line 1 and Line 2, press the [LINE] button
to switch the line, and check the group number.
(When the air conditioner is connected to either Line 1 or Line 2, pressing the [Line
Switch] button does not switch the line.)
×
NG1:
The number of line
where the air conditioner
is connected is not
displayed.
×
NG2:
The number of group
numbers displayed is
less than expected, or
some numbers are
missing.
OK:
The group numbers of all
the indoor units
connected are displayed
Procedure
Error message
1) Check if the controller is turned on.
2) Check if the controller internal wiring is defective or
connector is properly inserted.
3) Check the power line wiring between the controller and
the power unit.
Error message
Check if the TCC-LINK wiring is properly installed.
(
Refer to "15-4. TCC-LINK Wiring
With the handy remote controller of the indoor unit
whose group number is not displayed, check if the
central address setting is correct.
Proceed to the next check.
44
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