Poor heat dissipation Fault indicator is on 1 high voltage switch trip 2 high voltage switch is damaged 1 clean the condenser, air retention 2 Replace the new pressure switch Insufficient refrigerant Fault indicator is on 1 refrigerant is not enough to escape from low pressure 3 thermostat is not allowed or the sensor is malfunctioning 1 according to the note <2> 2 Check whether the expansion tank is out of water, whether the circulating pump is running, and after resetting, manually reset the low pressure switch or shut down and restart; 3 If the evaporator freezes, please drain the ice water and add warm water to dissolve the ice. 4 Replace or repair. Note: It is not possible to hit the ice with a hard object, such as breaking through the copper pipe, which will damage the compressor. overload Fault indicator is on 1 voltage is abnormal; 2 The motor, pump, and compressor shaft are damaged; 3 poor heat dissipation 4 overload relay is too small or the adjustment value is too low; 5 line contact is bad or loose 1 Three-phase power supply voltage drop or voltage instability and phase loss, please adjust the voltage and check the cause of the missing phase; 2 Replace the new shaft or replace it; 3 Please follow the note <1>; 4 change to large or increase according to normal values; 5 lock The fault indication is not lit but the compressor is not working Protection device Please follow note 4 Ice sink water is not cold Or low pressure trip 1 insufficient capacity; 2 insufficient refrigerant; 3 refrigerant blocking; 4 valve rupture; 5The temperature switch setting is too high; 6 temperature switch failure; 7 poor heat dissipation 8 sensor failure 1 increase the host capacity; 2 Processing according to Note <3>; 3 Replace the blocking part such as desiccant or expansion valve vacuum treatment and refill the refrigerant; 4 Replace the compressor, judged by the note <3>; 5 lower the temperature; 6 new; 7 low efficiency, please follow the note <1>; 8 replacement new Water shortage Inadequate water flow 1 The water in the water tank is insufficient; 2 pipe water flow is too small 1 add water to the water tank; 2 check whether each valve is open to the maximum
2 evaporator icing