Sanyo 26KHHS72R Service Manual - Page 150
LED 1, LED 2, Remarks
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(2) LED Indicator Messages on Outdoor Control PCB 4. Service procedures LED 1 LED 2 Remarks Power ON sequence 1. No communication from indoor units in system 2. Communication received from 1 or more indoor units in system 3. Regular communication OK (Capacity and unit quantity match) If it is not possible to advance to 3, repeats 1 → 2. At 3, changes to normal control. Normal operation EEPROM error (F31) Pre-trip (insufficient gas) Pre-trip (P20) Pre-trip (other) (0.25/0.75) (0.75/0.25) Displayed during automatic address setting 1 and initial communication. After these are completed, alarm F31 is displayed. P03 Alarm 1 Insufficient gas indicator Alternate blinking during alarms LED 1 blinks M times, then LED 2 blinks N times. The cycle then repeats. M = 2: P alarm 3: H alarm 4: E alarm 5: F alarm 6: L alarm N = Alarm No. * Refer to "1. Examples of alarm display" below. Refrigerant recovery mode Automatic address setting Automatic address setting in progress Blinking alternately 2 Automatic address setting alarm (E15) Automatic address setting alarm (E20) (0.25/0.75) (0.75/0.25) (0.25/0.75) Blinking simultaneously (0.75/0.25) Blinking simultaneously Automatic address setting alarm (Other than E15 and E20) Blinking simultaneously : ON : Blinking (0.25/0.75) indicates that the lamp illuminates for 0.25 seconds, and then is OFF for 0.75 seconds. Unless otherwise indicated, the blinking is (0.5/0.5). 3 : OFF (3) Examples of alarm display (other than E15, E16, and E20) → Alarm / Display P03 4 P04 P05 P31 H01 LED 1 Alternately ( Blinks 2 times ) (Blinks 3 times) → LED 2 (Blinks 3 times) (Blinks 4 times) (Blinks 5 times) (Blinks 31 times) (Blinks 1 times) • 5 E04 • F07 • L13 • 6 • (Blinks 4 times) • (Blinks 5 times) • (Blinks 6 times) • (Blinks 4 times) (Blinks 7 times) (Blinks 13 times) Note: This table shows example alarms. Other alarms may also be displayed. SM831148 IV-4