Self-Diagnostics Function Table - Panasonic S-36PU1E5A Technical Data & Service Manual

R410a models
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4-15. Self-Diagnostics Function Table

• Causes and corrections in instances when automatic address setting cannot be started.
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.
4
• Causes and corrections in instances when automatic address setting starts, but cannot be completed successfully.
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).
• If alarm E15, E16, or E20 appears after automatic address setting is started, check the following items.
Alarm display
E15
The total capacity of indoor units is too lower than that of outdoor unit.
E16
The total capacity of indoor units is too higher than that of outdoor unit.
The outdoor unit received no serial signals from indoor units within 90 seconds after automatic
E20
address setting was started.
Trouble
Trouble
Alarm description
4-46
Cause and correction
Check for any errors in the power wiring to
the outdoor unit, and check for a missing
phase.
Check the "Alarm Displays" 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.
Cause and correction
Check the "Alarm Displays" table and
correct the problem.
Check the alarm details on the "Outdoor
Unit Control PCB LED 1 and 2 Alarms"
table, then check the "Alarm Displays"
table and correct the problem.

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