Check code

 

Check code name

Possible causes

 

 

 

 

 

 

[F10]

 

I/U sensor TA error

Sensor TA open or short-circuit

(New code)

 

 

 

 

 

 

 

 

 

 

Is TA connector

NO

 

 

 

Correct connector connection.

CN104 connected

 

 

normally?

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

Is TA resistor

NO

 

 

 

Replace sensor TA.

characteristic

 

 

normal?

 

 

 

 

 

 

* See I/U temp. sensor characteristics-1.

YES

Check MCC-1510 board.

Replace it if necessary.

Check code

Check code name

Possible causes

 

 

 

[F29]

Other indoor unit errors

Failure of I/U board

(New code)

 

 

 

 

 

This is an error of non-volatile EEPROM IC10 on the indoor unit board, which occurs during operation. Replace the service board.

*If EEPROM is not mounted at power on or if no data can be read/written from/in the EEPROM, auto address mode is repeated. At this time, the AI-NET central controller indicates code “97”.

(About 3 minutes)

(About 1 minutes)

 

 

(Power on)

“SETTING” appears

“SETTING” disappears.

LED (D02) on the I/U

Reboot

 

on the R/C.

 

board blinks for about

(reset)

 

 

 

10 seconds (1Hz).

 

(Repeated)

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