MXS Service Manual

SiUS121736EA Service Diagnosis
Service Diagnosis 146
2 Press UP or DOWN button and change the UNIT No. until the indoor unit starts to beep.
3 Press OPERATION MODE SELECTOR button. The left 0 (upper digit) indication of the
error code blinks.
Step Action
UP button
DOWN button
(R15408)
If you hear... Then...
3 short beeps Follow all steps below.
1 short beep Follow steps 3 and 4. Continue the
operation in step 4 until you hear a
long beep. This long beep
indicates that the error code is
confirmed.
1 long beep There is no abnormality.
(R24051)
OPERATION MODE
SELECTOR button