Air-conditioning Four-way valve stuck, how to do?
4-Way Reversing Valve jammed the reason
1, poor lubrication, Spring is stuck or damaged, oil or impurities stuck sliding parts;
2, a long time after the use of the valve core sealing ring wear, valve stem and seat damage, valve action slow or not normal reversing, etc.
3, the inlet, the exhaust hole is the oil, the mud and so on debris blockage, closed tightly, the activity Iron core is card death;
4, the valve body by external impact damage, causing the sliding valve can not be reversed.
1, if not cut to the new position, immediately cut back to the original position, to avoid the system suppress pressure;
2, if can not be cut back to the original position, can use emergency venting treatment, such as still bad treatment, according to the shutdown treatment;
3, separate to the 4-Way Reversing Valve power, with a stick percussion, or on the Four-way valve on the road with the four-way valve movement of the same pressure, and then Percussion.
4, the 4-Way Reversing Valve removed to see if the dirty things stuck; 5, with some toilet paper and towel wrapped in 4-Way Reversing Valve, and then with the freshly boiled hot water poured on it, heating it. Then use the power cord of the 4-Way Reversing Valve to make it suction and pull the Spool.
Several times, heard a large airflow sound, the system is functioning normally, preferably do not use gas welding, gas welding temperature is too high, will be the valve core baking deformation; 6, should first check whether the work of the oil mist is normal, the viscosity of the lubricant is Appropriate.
If necessary, replace the lubricating oil, clean the sliding part of the reversing valve, or replace the spring and reversing valve;
7, Replace the sealing ring, stem and seat, or replace the new 4-Way Reversing Valve. If you have a professional electrician knowledge, can be used to measure the voltage of the coil, to see if the rated voltage is reached, if the voltage is too low, you should further check the control circuit power supply and associated travel switch circuit.
If the reversing valve at the rated voltage can not be normal commutation, you should check the coil connector or plug is loose or contact is not real.
Precautions If you do not solve the problem, to prevent electrical damage, It is recommended that professional master inspection Repair.http://www.shunfengvalve.com/air-conditioning-four-way-valve-stuck-how-to-do/4-Way Reversing Valve used in packaged and central air conditioners