Sanyo STK-RCS-7TWSUA service manual Self-Diagnostics

4. SELF-DIAGNOSTICS

4-1. Self-Diagnostics Procedure

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.

<Clock display > Test run mode

Self-diagnostics mode

ON/OFF

operation button

NIGHT SETBACK button

1 HR.TIMER button

ACL (Reset) button

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