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