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TABLE 12: Error Codes - 09K 12K (Continued) |
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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 | ||||||||
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| 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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| 1. Loosening or bad contact of | |
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| Indoor |
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| During cooling and drying | indoor ambient temp. sensor | |
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| and mainboard terminal. | |||
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| ambient |
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| OFF 3S |
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| operation, indoor unit | 2. Components in mainboard fell | |
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| temperature |
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| operates while other loads | |||
12 | F1 |
| and blink |
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| down leads short circuit. | ||||
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| sensor is |
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| once |
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| will stop; during heating | 3. Indoor ambient temp. sensor | |
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| open/short |
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| operation, the complete | |||
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| damaged. (check with sensor | |||
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| circuited |
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| unit will stop operation. | ||
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| resistance value chart). | |||
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| 4. Mainboard damaged. | |
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| 1. Loosening or bad contact of | |
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| Indoor |
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| AC stops operation once | Indoor evaporator temp. sensor | |
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| and mainboard terminal. | |||
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| reaches the setting tem- | |||
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| evaporator |
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| OFF 3S |
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| 2. Components on the | ||
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| perature. Cooling, drying: | ||||
13 | temperature |
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| mainboard fall down leads | ||||
F2 |
| and blink |
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| internal fan motor stops | |||||
sensor is |
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| short circuit. | ||||||
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| twice |
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| operation while other | |||
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| open/short |
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| 3. Indoor evaporator temp. | |||
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| loads stop operation; heat- | |||
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| circuited |
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| sensor damaged. (check temp. | ||
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| ing: AC stop operation | sensor value chart for testing). | |
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| 4. Mainboard damaged. | |
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| Outdoor |
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| During cooling and drying | Outdoor temperature sensor | |
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| ambient |
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| OFF 3S |
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| OFF 3S |
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| operating, compressor | hasnt been connected well or is | |
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| temperature |
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| stops while indoor fan | ||||
14 | F3 |
| and blink |
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| and blink |
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| damaged. Please check it by | ||||
sensor is |
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| operates; During heating | |||||||
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| 3 times |
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| 6 times |
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| referring to the resistance table | |||
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| open/short |
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| operation, the complete | ||||
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| for temperature sensor). | |||
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| circuited |
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| unit will stop operation. | ||
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| Outdoor |
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| During cooling and drying | Outdoor temperature sensor | |
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| condenser |
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| OFF 3S |
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| OFF 3S |
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| operation, compressor | hasnt been connected well or is | |
15 | temperature |
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| stops while indoor fan will | |||||
F4 |
| and blink |
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| and blink |
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| damaged. Please check it by | |||||
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| sensor is |
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| 4 times |
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| 5 times |
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| operate; During heating | referring to the resistance table | |
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| open/short |
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| operation, the complete | ||||
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| for temperature sensor). | |||
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| circuited |
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| unit will stop operation. | ||
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| During cooling and drying | 1.Outdoor temperature sensor | |
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| Outdoor |
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| operation, compressor will | hasnt been connected well or is | |
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| stop after operating for | |||
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| discharge |
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| OFF 3S |
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| damaged. Please check it by | ||
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| OFF 3S |
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| about 3 mins,while indoor | ||||
16 | temperature | F5 |
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| referring to the resistance table | |||||
sensor is |
| and blink |
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| and blink |
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| fan will operate;During | for temperature sensor). | ||||
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| 5 times |
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| 7 times |
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| heating operation, the | |||
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| open/short |
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| 2.The head of temperature | ||||
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| complete unit will stop | |||
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| circuited |
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| sensor hasnt been inserted | ||
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| after operating for about | |||
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| into the copper tube. | ||
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| 3 mins. | ||
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| Limit/ |
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| All loads operate normally, | Refer to the malfunction | |
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| decrease |
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| OFF 3S |
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| OFF 3S |
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17 | frequency | F6 |
| and blink |
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| and blink |
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| while operation frequency | analysis (overload, high | ||
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| for compressor is | ||||||||
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| due to |
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| for 6 times |
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| 3 times |
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| temperature resistant) | ||
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| decreased. | |||||
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| overload |
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| Decrease |
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| OFF 3S |
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| OFF 3S |
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| All loads operate normally, | The input supply voltage is too | |
18 | frequency | F8 |
| and blink |
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| and blink |
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| while operation frequency | low; System pressure is too high | ||
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| due to |
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| 8 times |
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| once |
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| for compressor is | and overload. | |
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| overcurrent |
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| decreased. | ||||
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| Decrease |
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| OFF 3S |
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| OFF 3S |
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| All loads operate normally, | Overload or temperature is too | |
19 | frequency |
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| while operation frequency | high; Refrigerant is insufficient; | ||||
F9 |
| and blink |
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| and blink |
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due to high |
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| for compressor is | Malfunction of electric expan- | ||||||
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| 9 times |
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| twice |
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| air discharge |
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| decreased. | sion valve (EKV). | |||
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| Limit/ |
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| All loads operate normally, |
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| decrease |
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| OFF 3S | OFF 3S |
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| OFF 3S |
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20 |
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| while operation frequency | Poor | ||||||
frequency | FH |
| and blink | and blink |
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| and blink |
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| for compressor is | fan speed is too low. | ||||||||
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| due to |
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| 2 times | 2 times |
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| 4 times |
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| decreased. |
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| antifreezing |
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| 1. Measure the voltage of posi- | |
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| tion L and N on wiring board | |
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| During cooling and drying | (XT), if the voltage is higher than | |
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| 265VAC, turn on the unit after | ||
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| Voltage for |
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| OFF 3S |
| OFF 3S |
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| operation, compressor will | the supply voltage is increased | |
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| stop while indoor fan will | to the normal range. | ||||
| 21 | DC | PH |
| and blink |
| and blink |
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| operate; During heating | 2.If the AC input is normal, mea- | ||||||
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| too high |
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| 13 times |
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| operation, the complete | sure the voltage of electrolytic | ||||
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| unit will stop operation. | capacitor C on control panel | |
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| (AP1), if its normal, theres mal- | |
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| function for the circuit, please | |
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| replace the control panel (AP1). | |
Johnson Controls Unitary Products | 33 |
