Carrier MMY-MAP0724FT9UL Service Manual page 189

(6) Display of Outdoor EEPROM Writing Error Code (Displayed on Header Unit Only)
* The latest error code written in the EEPROM of each outdoor unit is displayed.
(This function is used to check the error code after the resetting of the power supply.)
To display the error code, push SW04 and hold for at least 5 seconds after setting SW01 to 03 as shown in the
table below.
SW01 SW02 SW03
1 Latest error code of header unit (U1)
1 16
2 Latest error code of follower unit No. 1 (U2)
• 7-Segment Display
Set SW01/SW02/SW03 to [1/1/16] and push SW04 and hold for at least 5 seconds. The latest error code of the
header unit (U1) will be displayed.
If the setting of SW02 is changed, the latest error code of a follow unit (U2-U3) will be displayed.
Indoor address
Section A
D600 D601
– 189 –
Section B
D602 D603 D604
7-segment display section A
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E. 1.
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E. 2.