INDOOR UNIT ERROR CODES
TABLE 12: Error Codes - 09K 12K
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| Display Method of Indoor Unit |
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| Malfunction |
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| Malfunction |
| Indicator Display | Indicator has 3 kinds of display |
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No. | Dual 8 | (during blinking, | status and during blinking, ON 0.5s | A/C Status | Possible Causes | |||||||
| Name | Code | ON 0.5s and OFF 0.5s) |
| and OFF 0.5s |
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| Display | Operation | Cool | Heating | Yellow |
| Red |
| Green |
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| Indicator | Indicator | Indicator | Indicator |
| Indicator |
| Indicator |
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| During cooling and drying | Possible reasons: |
| High |
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| 1. Refrigerant was super abun- | |
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| OFF 3s |
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| operation, except indoor | dant; | |
1 | pressure |
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| fan operates, all loads | 2. Poor heat exchange (includ- | |
E1 | and blink |
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protection of |
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| stop operation. During | ing filth blockage of heat | |||
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| once |
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| system |
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| heating operation, the | exchanger and bad radiating | |
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| complete unit stops. | environment); Ambient tempera- |
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| ture is too high. |
| Antifreezing |
| OFF 3S |
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| OFF 3S |
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| During cooling and drying | 1. Poor |
2 | E2 | and blink |
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| and blink |
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| operation, compressor | 2. Fan speed is abnormal; | |
protection |
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| and outdoor fan stop while | |||||
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| twice |
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| 3 times |
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| indoor fan operates. | 3. Evaporator is dirty. |
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| System block |
| OFF 3S |
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| OFF3S |
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| The | |
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| will show E3 until the low | ||||
3 | or refrigerant | E3 | and blink |
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| and blink |
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| system | |
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| pressure switch stop | ||||||
| leakage |
| 3 times |
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| 9 times |
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| operation. | ||||
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| compressor. | |
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| High |
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| During cooling and drying |
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| operation, compressor | Please refer to the Proficien- | |
| discharge |
| OFF 3S |
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| OFF 3S |
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4 |
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| and outdoor fan stop while | TECH Ductless Splits Technical | |||
temperature | E4 | and blink |
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| and blink |
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| indoor fan operates. | Training Manual (discharge pro- | |||||
| protection of |
| 4 times |
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| 7 times |
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| During heating operation, | tection, overload). | |||
| compressor |
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| all loads stop. |
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| During cooling and drying |
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| Overcurrent |
| OFF 3S |
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| OFF 3S |
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| operation, compressor | 1. Supply voltage is unstable; |
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| and outdoor fan stop while | 2. Supply voltage is too low and | |||
5 | E5 | and blink |
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| and blink |
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protection |
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| indoor fan operates. | load is too high; | ||||
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| 5 times |
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| 5 times |
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| During heating operation, | 3. Evaporator is dirty. | ||
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| all loads stop. |
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| Communi- |
| OFF 3S |
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| During cooling operation, |
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| compressor stops while | Refer to the corresponding | ||
6 | cation | E6 | and blink |
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| OFF | indoor fan motor operates. | ProficienTECH Ductless Splits |
| Malfunction |
| 6 times |
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| During heating operation, | Technical Training Manual. |
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| the complete unit stops. |
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| High |
| OFF 3S |
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| OFF 3S |
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| During cooling operation: |
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| compressor will stop while | Refer to the malfunction | |||
7 | temperature |
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E8 | and blink |
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| and blink |
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| indoor fan will operate. | analysis (overload, high | ||
resistant |
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| 8 times |
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| 6 times |
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| During heating operation, | temperature resistant). | |
| protection |
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| the complete unit stops. |
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| During cooling and drying |
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| OFF 3S | OFF 3S |
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| operation, compressor will |
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| EEPROM |
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| stop while indoor fan will | Replace outdoor control panel | ||
8 | EE |
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| and blink | and blink |
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malfunction |
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| operate; During heating | AP1. | ||||
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| 15 times | 11 times |
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| operation, the complete |
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| unit will stop. |
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| Discharging after the complete |
| Limit/ |
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| unit is |
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| check whether the thermal | |
| decrease |
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| All loads operate normally, | |
9 | frequency | EU |
| OFF 3S | OFF 3S |
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| while operation frequency | grease on IPM Module of |
due to high |
| and blink | and blink |
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| for compressor is | outdoor control panel AP1 is | ||
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| 6 times | 6 times |
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| sufficient and whether the | ||
| temperature |
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| decreased | |||
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| radiator is inserted tightly. If its | ||
| of module |
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| no use, please replace control | |
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| panel AP1. |
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| Wireless remote receiver | 1. No jumper cap insert on |
| Malfunction |
| OFF 3S |
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| mainboard. | |
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| and button are effective, | 2. Incorrect insert of jumper cap. | ||
10 | protection of | C5 | and blink |
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| but cannot dispose the | 3. Jumper cap damaged. | ||||
| jumper cap |
| 15 times |
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| related command. | 4. Abnormal detecting circuit of | ||
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| mainboard. |
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| When the outdoor unit |
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| Gathering |
| OFF 3S | OFF 3S |
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| receive signal of Gather- |
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| ing refrigerant, the system |
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11 | F0 | and blink | and blink |
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| Nominal cooling mode | ||
refrigerant |
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| will be forced to run under | |||||
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| 1 times | 1 times |
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| cooling mode for gathering |
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| refrigerant |
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32 | Johnson Controls Unitary Products |
