Air Conditioning Electronic Expansion Valve Detection and Repair Instrument Manual Valve Opening Tooling Controller Electronic

The new electronic expansion valve detection and repairer adopts high-power independent driving tube, and the driving torque is 5 times that of the original controller

Universal for all 5-wire 6-wire electronic expansion valves, compatible with 12V 24V, the maximum number of steps supports 3000 steps

The electronic expansion valve can be opened automatically on site, and the expansion valve can be adjusted manually at any opening.

Automatic positioning lock valve function. According to the operating state of the unit, adjust the expansion valve to an appropriate position, so that the unit can resume normal operation immediately.

It can be used as a tool for vacuuming, charging refrigerant and other tools that need to temporarily open the valve during air conditioning maintenance, and can also be used for the detection and repair of the valve body stuck fault caused by the electronic expansion valve.

Automatic positioning and manual valve adjustment function:

After the repairer is powered on, the power indicator lights up. Insert the plug of the electronic expansion valve into the controller socket, press the start and stop button, the repairer will open the expansion valve to the maximum 500 steps/2000 steps/3000 steps, and then automatically open the expansion valve to the middle position 250 steps/1000 steps/1500 steps stop. About 10 seconds to complete the positioning lock valve function. Ensure that the electronic expansion valve is opened to the middle position under any opening degree. At this time, the unit is turned on and can run normally.

If it is found that the operating pressure and current of the unit are not within the normal range, manual fine adjustment can be performed.

Manual adjustment, you can click the big button or the small button to adjust the opening of the expansion valve arbitrarily. Long press the big button or the small button, the expansion valve will open up or down continuously and quickly. When adjusting the open key, the unit appears low pressure protection and valve closing, that is, the expansion valve acts in the opposite direction. At this point, just press the open button.

After the adjustment is completed, the plug of the electronic expansion valve can be removed, and the electronic expansion valve will remain at the current adjustment opening. The electronic expansion valve becomes a fixed throttling component, and the unit can resume normal operation. It can be used as a method to temporarily restore the normal operation of the unit.

If it runs for a long time, the unit will lose the automatic control function of the expansion valve, which is the same as the capillary throttling method. It has an impact on the energy efficiency of the unit and does not affect other functions of the unit.

Original controller electronic expansion valve drive signal detection function:

The repairer has the function of detecting the drive signal of the original electronic expansion valve. Connect the detection line to the expansion valve socket of the original controller, and power on the original controller to start up, and then you can quickly and intuitively judge whether the drive signal is normal or not.

Quick judgment method for electronic expansion valve failure:

This product has the function of electronic expansion valve fault detection. After power-on, insert the electronic expansion valve plug into the controller socket and press the start/stop button. At this time, touch the electronic expansion valve coil by hand. Normally, the coil vibrates slightly rhythmically for 10 seconds. If there is no vibration, it can be determined that the electronic expansion valve coil is faulty. If there is vibration, the controller completes the positioning lock valve function after 10 seconds, and the unit still cannot operate normally, it can be determined that the electronic expansion valve spool is stuck.

There is no need to remove the electronic expansion valve from the unit during testing.

Spool stuck repair function:

Just hit here!

When the fault of the expansion valve coil is eliminated and it is determined that the valve body of the expansion valve is stuck, the repairing function of the repairer is activated, and the stuck valve core is forcedly rotated by 5 times of the driving torque, and the repairing process is fully automatic. At the same time, tap the root of the valve body lightly with a wooden stick or screwdriver, and the operation can be repeated many times.

For the simple valve core stuck fault, it can generally be repaired successfully.

When repairing, the electronic expansion valve does not need to be removed from the unit, saving time and valve replacement costs.