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34788 Recover does not work - Measuring Tools & Sensors

Posted by Tom Menten on


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Rafael Aguayo

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"Recover" is a term that can be used in various contexts, can you please provide more information on what you are trying to recover and what is the specific issue you are facing? If it is a software issue, please specify the software and the operating system you are using.
Also, please provide more information on what you mean by "does not work", is there an error message or any other symptom that you are experiencing?
This information will help me understand the issue better and provide a more accurate solution.

Posted on Jan 15, 2023


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We have a robinair 34788 and it wont recover

Does it flash any codes on the screen when you attempt to recover? You'll want to check the inline filter as well as the condition of the pump oil.

I have a robinair 34788 machine and when I am recovering a system for service the recover feature no longer completes down to the oil drain. Its like it gets stuck on recover.... and by that I mean it...

It's sound like problem with oil drain solenoid or harness. please check harness of oil drain solenoid. If harness is ok & connected with relay board then you need to replace oil drain solenoid.

I'm in afghan and I have a robin air cool tech 34788. It's take a long time to the clear the line and and a long time to recover plz help me out

I think your machine is working normal! Robiaair 34788 is high bred technology machine, you can't forse on it to fast recover! It will compleate the process it self. However if you still think this is not working normal you can check low/high side hose & coupler for any block.
Hope this will be helpfull to you. Good luck


You may did not open the tank valve before you press fill key! please try as bellow:
Connect tank fill adapter to source tank & open tank valve then make the tank up side down,now press tank fill key. screen will change to checking source tank for 30/60 sec. then start filling.
If you try as above direction & still the problem exist,it may need to replace or rebuild tank fill solenoid.

I have a a modle 34788 robinair cooltech my day shift messed it up is there a way to fix my problim? it wont recover at all. all other functions work (with the lines off i can get it to vacumme)when i hook...

Please check 1# The compressor suction line with a vacuum gauge & make sure it has 13" HG of suction while you active recover. if not then you need to replace the compressor. 2# Check spin-on filter O rings are fixed properly it may missing or lose, also check filter capacity (amount of refrigerant you have been recover sinc last filter change.every 68KG or 150LBS of recovery you must change spin-on filter)

High presure rest on robinair 34788

It's seems to be problem with your unit relay board,vacuum pump or pressure transducer.Most of Robinair 34788 machine having same problem.You can try the following 1# Open vacuum pump oil filling cap to release extra pressure from pump.2# Replace new relay board & follow the on screen message(do not skip any option).3# Check pressure transducer is working properly.I hope this will help you.
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