Toshiba MMK-AP0072H, Service Manual

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7-2-2. New Check Code
1. Difference between the TCC LINK and AI-NET check code
The displaying method of the check code changes in this model and after.
Used characters
Characteristics of code
classification
Block display
AI-NET check code
Hexadecimal notation, 2 digits
Few classification of communication/
incorrect setup system
Indoor P.C. board, Outdoor P.C.
board, Cycle, Communication
TCC Link
Al Decimal notation, 2 digits
Many classification of communication/incorrect setup system
Communication/Incorrect setup (4 ways), Indoor protection,
Outdoor protection, Sensor, Compressor protection, etc.
< Display in wired remote controller >
• [ ] goes on.
• [UNIT No.] + Check code + Operation lamp (Green) flash
<Display on sensor part in wireless remote controller>
• Block display of combination of [ ] [ ] [ ]
<Display on 7-segment in outdoor unit>
• Unit No. and check code are displayed.
• In a case of error with auxiliary code, the check code and the
auxiliary code are displayed alternately.
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→
Display
A
C
E
F
H
J
L
P
Classification
Unused
Central control system error
Communication system error
Each sensor error (Failure)
Compressor protective system error
Unused
Setup error, Other errors
Protective device operation
7-3. Troubleshooting by Check Display on Remote Controller
7-3-1. In Case of Main Remote Controller (RBC-AMT21E)
UNIT No.
CODE No.
R.C. No.
Check code Indoor unit No. in which
an error occurred
UNIT
SET CL
3
1
2
Procedure
1
2
3
Description
When pushing
SET
and buttons simultaneously for 4 seconds or more, the below display appears.
If [Service Check] is displayed, the mode enters in the error history mode.
• [01: Error history order] is displayed in code number window.
• [Check Code] is displayed in check code window.
• [Indoor unit address with error] is displayed in UNIT No.
Every pushing temp. set / buttons, the error histories stored in the memory are displayed in
order. The numbers in item code indicates item code [01] (Latest) to [04] (Oldest).
CAUTION
Do not push [CL] button because all the error histories of the indoor unit will be deleted.
After confirmation, push button to return to the usual display.
UNIT No.
CODE No.
R.C. No.
1. Confirmation and check
When a trouble occurred on the air conditioner, the check code and
the indoor unit No. are displayed on the display section of the remote
controller.
The check code is displayed while the air conditioner operates.
If the display disappeared, operate the air conditioner and
check the error based upon the following “Confirmation of
error history”.
2. Confirmation of error history
When a trouble occurred on the air conditioner, the error
history can be confirmed with the following procedure.
(Up to 4 error histories are stored in memory.)
This history can be confirmed from either operating status or
stop status.
FILE NO. SVM-05052