CITY MULTI indoor unit

Test run [Output pattern A] Errors detected by indoor unit Wireless remote controller Wired remote controller Symptom Remark Beeper sounds/OPERATION INDICATOR lamp flashes Number

• During heating operation, even if the indoor unit is set to operation while the outdoor unit is in defrosting operation, operation starts after the defrosting op- eration of the

Check 2 digitscode Check 4 digitscode Trouble Detected Unit Remarks Indoor Outdoor Remote Controller Ed 0403 Serial communication error Outdoor unit Multi controller board–Power

Check code Trouble Detected Unit Remarks Indoor Outdoor Remote Controller 0403 Serial communication error Outdoor unit Multi controller board ~ Power board communication trouble

[Output pattern A] Errors detected by indoor unit Wireless remote controller Beeper sounds/OPERATION INDICATOR lamp flashes Number of times 1 2 3 4 5 6 7 8 9 10 11 12 No sound Wired

• During heating operation, even if the indoor unit is set to operation while the outdoor unit is in defrosting operation, operation starts after the defrosting op- eration of the

[System configuration figure connected with the Personal computer Example] Outdoor Unit Indoor Unit Indoor Unit M-NET transmission line ME Remote controller Shield RS-232C

Connecting refrigerant pipes and drain pipes A To outdoor unit B End connection brazing C BC controller D Indoor unit E PWFY unit Lower stream unit model Less than 200 in total