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Troubleshooting

1. Indoor malfunction Anti freezing protection Overload of system No motor indoor feedback Indoor temperature sensor malfunction Intemat amblant temperature sensor malfunction Zero passage abnormal Overload of compressor Startup faiture No motor of outdoor unit feedback Overcurrent protection 4 way conversion abnormal Phase curent detection malfunction of compressor Eror display Dual 8 display Heating LED pause 3s and blink 15 times Heating LED pause 3s and blink 15 times Running LED pause 3s and blink 2 times Heating LED pause 3s and blink 4 times Running LED pause 3s and blink 11 times cooling LED pause 3s and blink 2 times Cooling LED pause 3s and blink 1 times Heating and cooling LED blinks 7 times at the same time healing LED pause 3s and blink 3 times heating LED pause 3s and blink 11 times Heating and cooling LED blink times at the same time Running LED pause 3s and blink 5 times cooling LED pause 3s and blink 20 times Heating LED pause 3s and blink 13 times Repair method Replace indoor main board Replace indoor main board Outdoor ambient temperature is too low System abnormal check if the evaporator and condenser is dirly and blocked Is electromotor mounted normatly Is it Measure the resistance value with universal meter Is it loose Measure the resistance value wilh universal meter
2. ling LED pause 3s and blink 10 times cooling LED pause 3s and blink 11 times Heating LED pause 3s and blink 24 times Running LED pause 3s and blink 6 times Heating and codling LED blink 12 times al the same time Check if the resistance of compressor and resisiance to ground Is normal If the compressor is normal the outdoor main boar d may be wrong Replace outdoor main board Is H loose Measure the resistance value with universal meter ts it loose Measure the resistance value with universal meter Is fl toose Measure the resistance value with universal meter ts it loose Measure the resistance value with universal meter Is outdoor ambient temperature is too high Is radiator mounted correctly Replace outdoor main board Is vallage of AC power supply normal Is voltage of AC power supply normal Is outdoor connected connecting wire reliably Outdoor unit is nol matched with indoor unit 4min after protection stop of compressor the malfunction is shown in error code In other situation the malfunction will be displayed by press the light button for 6 times within 4s
3. loose Replace indoor main board Inspecl connection state of the overload wire Check if ihe resisiance of compressor and resistance fo ground ls normal if tha compressor is normal the outdoor boar d may be main wrong This malfunction may happen when outdoor DC electromotor is used Is electric network varlable Replace 4 way valve Replace outdoor board main Sync failure Current diction malfunction of complete unit Outdoor ambient temperature sensor malfunction Discharge protection compressor Break circuit and short circuit of outdoor discharge temperature sensor Break circuit and short circuit of outdoor condenser tamperature sensor Overheat of carbon fin DC overcurrent Temperature sensor malfunction of carbon fin Lack of Freon or block protection DC input voltage is oo high DC input voltage is too low Communication malfunction Setting error indoor and outdoor unit abnormal Troubleshooting Repair method Dual 8 LED display H7 Heating LED pause 3s and blink 7 times Cooling LED pause 3s and blink 13 times Cooling LED pause 35 and blink 3 limes Running LED pause 3s and blink 4 limes cooling LED pause 3s and blink 5 limes cooling LED pause 3s and blink 18 times heating LED pause 3s and blink 19 times Heating and cooling LEO blink 11 times at ihe same time heailng LED pause 3s and blink 18 times coo

Troubleshooting

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