TABLE 14: Error Codes - 30K 36K (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 | |||||||
| 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 |
| Indoor |
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| During cooling and drying | indoor ambient temp. sensor |
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| and mainboard terminal. | ||
| ambient |
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| OFF 3S |
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| operation, indoor unit | 2. Components in mainboard fell |
| temperature |
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| operates while other loads | ||
12 | F1 |
| and blink |
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| down leads short circuit. | ||
| sensor is |
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| once |
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| will stop; during heating | 3. Indoor ambient temp. sensor |
| open/short |
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| operation, the complete | ||
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| damaged. (check with sensor | ||
| 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 |
| 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- | ||
| 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 | ||
| open/short |
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| 3. Indoor evaporator temp. | ||
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| loads stop operation; heat- | ||
| 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 |
| 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 |
| 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 | ||
| open/short |
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| operation, the complete | |||
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| for temperature sensor). | ||
| 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 |
| 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 | |||
| 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 |
| open/short |
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| operation, the complete | |||
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| for temperature sensor). | ||
| circuited |
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| unit will stop operation. | |
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| During cooling and drying | 1.Outdoor temperature sensor |
| Outdoor |
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| operation, compressor will | hasnt been connected well or is |
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| stop after operating for | ||
| 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 | ||
| open/short |
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| 2.The head of temperature | |||
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| complete unit will stop | ||
| 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 ProficienTECH |
| decrease |
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| OFF 3S |
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| OFF 3S |
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17 |
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| while operation frequency | Ductless Splits Technical Train- | |||
frequency | F6 |
| and blink |
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| and blink |
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| for compressor is | ing Manual (overload, high | |||||
| due to |
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| for 6 times |
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| 3 times |
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| decreased. | temperature resistant) | |||
| 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 |
| due to |
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| 8 times |
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| once |
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| for compressor is | and overload. |
| 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. | ||||||
| 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 | |
| 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- | |||||
| too high |
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| 11 times |
| 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). |
42 | Johnson Controls Unitary Products |