1, 4-Way Reversing Valve coil circuit breaker, short circuit or voltage does not meet the coil performance requirements, resulting in the pilot valve spool can not act;

2, due to external reasons, the pilot valve part of the deformation, resulting in the valve core can not act;

3, Pilot valve Capillary deformation or blockage, the formation of insufficient flow, forming the pressure difference required for commutation;

4, main valve body deformation, the piston part is stuck to die and cannot move;

5, frozen oil deterioration or system into debris, 4-Way Reversing Valve piston die;

6, 4-Way Reversing Valve welding, the temperature is too high, the internal parts of the thermal deformation can not be action;

7, refrigeration system refrigerant leakage, refrigerant circulation is insufficient, can not reach the pressure required for commutation;

8, compressor temperature is too high, due to refrigerant leakage and other reasons the compressor can not be very good cooling, exhaust temperature too high cause the internal parts of the 4-Way Reversing Valve deformation card or reversing.

4-Way Reversing Valve4-Way Reversing Valve used in packaged and central air conditioners
1, 4-Way Reversing Valve coil circuit breaker, short circuit or voltage does not meet the coil performance requirements, resulting in the pilot valve spool can not act; 2, due to external reasons, the pilot valve part of the deformation, resulting in the valve core can not act; 3, Pilot valve Capillary deformation or...