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4. SELF-DIAGNOSTICS
PROCEDURE
After turning on power to the air conditioner, use the remote
controller and follow the steps below to execute
self-diagnostics.
Step 1: Press and hold the remote controller NIGHT SET
BACK (NSB) button and 1 HR TIMER button. Then,
press and hold the ACL (reset) button with a pointed
object such as the tip of a pen. After 5 seconds,
release ACL button first, then release NIGHT SET
BACK (NSB) and 1 HR TIMER buttons, "oP-1" (test
run) appears, blinking in the remote controller clock
display area.
Step 2: Next, press the 1 HR TIMER button once to change
the display from "oP-1" to "oP-3" (self-diagnostics).
(The display continues to blink.)
Step 3: Finally press the ON/OFF button to engage
self-diagnostics mode.
• The self-diagnostics function utilizes the 3 indicator lamps
on the main unit, in combinations of ON lamps, blinking
lamps, and OFF lamps, to report the existence of sensor
trouble or a protective operation. (The lamps blink or
remain ON for 5 seconds, then turn OFF for 2 seconds.)
Self-diagnostics is completed when the buzzer sounds 3
short beeps.
• A maximum of 3 self-diagnostics reports are displayed, for
5 seconds each, beginning with the most recent report.
Following this display the lamps turn OFF. In order to view
the self-diagnostics results again, press the ON/OFF button
again.
• The 3 lamps remain OFF if no trouble has occurred.
<IMPORTANT> After self-diagnostics is completed, be sure
to press the ACL (reset) button to return to
normal mode. The air conditioner will not
operate if this is not done.
ON/OFF
operation button
1 HR.TIMER
button
NIGHT SETBACK
button
ACL (Reset)
button
< Clock display >
Test run mode
Self-diagnostics mode
4-1. Self-Diagnostics Procedure
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