20 Most Recent Robinair Cool Tech 34700Z Recovery, Recycling, Recharging - Page 5 Questions & Answers

Pleas e 288 wat is that

Please check Charging solenoid (S3) in Solenoid manifold block, it may need to change solenoid coil or Rebuild. If charging solenoid is OK, then problem can be SCALE or MAIN CIRCUIT BOARD. See if the machine display show default charging weight 90 kg/lbs when you active CHARGE mode. If not then calibrate scale. But if default charging weight is shown then replace MAIN CIRCUIT BOARD. See attached picture to find solenoids. I wish this will help you to solve the problem. If so please vote for it for further assistance. Best of luck!

Please check ''TANK FILL'' hose quick connector & ''LIQUID'' hose on ISV Tank & make sure both valves is opening properly.it sound like(one of those) close! If valves is Ok then check tank fill solenoid, it may need to rebuild or replace. If those are OK, replace ''TANK FILL'' Hose.
I hope this will help you to solve the problem, if so please vote for it. Gool luck!

What is the reasoning behind this?

Please check the following: 1# Check the recovered amount of refrigerant since the last filter change(Max.filter cap.150 LBS/68 KG).If more then this you must change spin-on filter & vacuum pump oil.2# Check with vacuum gauge on compressor test(During compressor running) port & make sure it has 13"HG of suction,If suction less then 13''HG then you have to replace the compressor.3# Check all tank hose (Vaipor,Air purge & Liquid) is connected on the ISV tank quick seal.(Do not over tight).Hope this will solve your problem.

The machine requires a min amout of 6lbs to even charge. but if you are showing any amout charging it is not the machine its self. you are looking at may be bad hoses or couplers. it is common in the winter months to have charge issues if the unit is not above 70 degrees F. dont forget there are cars/trucks out there that no matter how hard you try you can not complete a charge on the high side and you must switch over to a low side charge

The code is on the new filter. If the code is not working call robinair tech support. they will check the code if it is bad they will fix it. if its good some one already ran it through the machine