13-12
TROUBLESHOOTING
SM WNGDCI 2-E.4 GB
No
Symptom
Probable Cause
Corrective Action
21
Other home appliances operation
is faulty such as noise appears
in the television picture, or the
picture is distorted or static occurs
in the radio sound
EMC interference by
the A/C unit
Check for EMC problems
22
All others
Specific problems of
indoor or outdoor units
Check diagnostics
13.2.2
Checking the refrigeration system
Checking system pressures and other thermodynamic measures should be done when system is
in technician Mode where the system operates as in fixed settings. The performance curves given
in this manual are given for unit performance in Technician mode when high indoor fan speed is
selected.
13.2.3 Diagnostics
13.2.3.1 Outdoor
unit
diagnostics
If any fault exists in the system, it will be shown according to tIf no fault exists in the system, no
fault code will be displayed during normal operation mode, and the status led will be on while the
compressor is enable.he following coding method.
Two LEDs display the system diagnostics on real time as follows:
STATUS LED is blinking 5 times in 5 seconds, and shut off for the next 5 seconds.
FAULT LED will blink during the same 5 seconds according to the following table:
CONTENTS
