<Self-diagnosis by check codes>
1)The
2)Remote control key operation under the ser- vice mode is conducted by ON/OFF or TEMP. The remote control display by each key op- eration is varied as shown below. Two digit number is displayed in a hexadecimal num- ber.
3)The
a)Enter the service mode and make sure the off timer display of the remote control shows
“ ” .
b)Operate the “ON/OFF” key and make sure the timer lamp on the display section is flashing (5 Hz).
c)At the same time, also make sure the op- eration lamp is also flashing. This shows that the protection circuit on the indoor PC board is working.
d)Operate the TEMP. key and make sure the remote control display shows “ ” and
flashing of the operation lamp. If the op- eration lamp is flashing, it shows the pro- tection circuits for connecting cable is work- ing or thermal fuse is blown.
e)In the same way, operate the TEMP. key so that the display is increased one by one to continue checks by the
“ ” up to “ ” check operations of protection circuits for each block, and
“” to “ ” check operations of the typical protection circuits.
Table
Operating key | Indication after operation |
ON/OFF |
| “ | ” |
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| 1 is added to data before operation. |
| “ | ” | “ | ” |
TEMP. | (Up) |
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| ➞ |
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(Example) |
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| 1 is subtracted from data before operation. |
| “ | ” | “ | ” |
TEMP. | (Down) |
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| ➞ |
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(Example) |
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| 10 is subtracted from data before operation. | “ | ” | “ | ” | |
“AUTO” LOUVER |
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| ➞ |
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| (Example) |
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| Data before operation is directly transferred. | “ | ” | “ | ” | |
“SET” LOUVER |
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| ➞ |
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| (Example) |
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