1. E1 There are obstacles in front of the condenser 2. Control circuit 3. Three phase power supply is out of phase 3. Refrigeration starts when the outdoor ambient temperature is higher than 43 ° C. 4. Excessive working current causes the protector to act or the high pressure pipe pressure causes the high pressure switch to act. First, determine whether the air conditioner fails after running for a period of time or after starting up, so as to distinguish whether it is a system failure or a circuit failure, In terms of the system, the main considerations are: 1>unclean evacuation/new installation 2>excessive injection/maintenance 3>high temperature of the external unit/poor ventilation? Dirty blockage? Bad environment? Circuit: short circuit the internal main board ovc and the zero line.
2. If the failure continues, the mainboard is defective/replaced and repaired.
3. If there is no fault, check whether the high-voltage switch is on<the switch should be on under normal pressure>, if it is on.
4. Check the connection between the high-voltage switch and the ovc. If it is not connected, repair the high-voltage switch. First, determine whether the air conditioner fails after running for a period of time or after starting up.
5. In order to distinguish between system failure and circuit failure, the main system considerations are: 1>poor emptying/new installation 2>excessive injection/maintenance 3>high temperature of external unit/poor ventilation? Dirty blockage? Bad environment? Circuit: short circuit the main board ovc and the zero line of the internal unit, if the fault continues to occur.
6. Then the mainboard is defective/replaced and repaired. If no fault occurs.
7. Check whether the high-voltage switch is connected<the switch should be connected under normal pressure>. If it is, check the connection between the high-voltage switch and the ovc.
8. If not, repair the high-voltage switch.