Sanyo CHX06052 - Manual (Page 176)

5-2
Self-Diagnostics Function Table
1. Self-Diagnostics Function Table
1. Self-Diagnostics Function Table
v
v
v
Trouble Cause and correction
Trouble Cause and correction
The power LED on the outdoor unit control PCB does not turn ON.
LED 1 and 2 on the outdoor unit control PCB do not turn OFF when
the outdoor unit power is turned ON, and automatic address setting
cannot be started.
An alarm appears immediately when automatic address setting is
started from the remote controller.
Nothing happens when the operator attempts to start automatic
address setting from the remote controller.
Check for any errors in the power wiring to
the outdoor unit, and check for a missing
phase.
Check the hAlarm Displaysv table and
correct the problem.
Check that the remote controller wiring
and the inter-unit control wiring are
connected correctly.
Check that the indoor unit power is ON.
An alarm appears on the remote controller sometime from several
seconds to several minutes after automatic address setting is started.
LED 1 and 2 on the outdoor unit control PCB indicate that automatic
address setting is in progress (the LEDs blink alternately) for several
minutes after automatic address setting is started (the compressors
may also start and stop several times), however LED 1 and 2 never
indicate that automatic address setting is completed (turn OFF).
Check the hAlarm Displaysv table and
correct the problem.
Check the alarm details on the hOutdoor
Unit Control PCB LED 1 and 2 Alarms v
table, then check the hAlarm Displaysv
table and correct the problem.
Alarm display
E15
E16
E20
Alarm description
The number of indoor units detected during automatic address setting was smaller than the
number of indoor units which was set with switch S004 on the outdoor unit PCB.
The number of indoor units detected during automatic address setting was larger than the
number of indoor units which was set with switch S004 on the outdoor unit PCB.
The outdoor unit received no serial signals from indoor units within 90 seconds after automatic
address setting was started.