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Robinair 34200 When I pull vaccum systems runs for 3-5 mins and say's fails high pressure help! Phil

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

mhkamran
  • 180 Answers

SOURCE: Model Robinair 34700 Series 21699

Please do the following 1# Check your machine ISV tank liquid line quick connector.it's seems to be very tight,open little & try to charging.2# Rebuild charging solenoid.

Posted on Jun 25, 2009

mhkamran
  • 180 Answers

SOURCE: ROBINAIR 34700Z ALWAYS FAILS VACUUM CHECK AND

Please check the following: Low side manifold gauge is going to -13"HG while you recover refrigerant from the vehicle.If low side gauge not rich to that lavel then vacuum sensor will detect pressuer &
it will stop you to make vacuum until you fix the problem.If it happen you may nee to rebuild/replace one or more of this solenoid.1#Vacuum solenoid 2# Recover solenoid.3# Recycle solenoid.Also check Low/High side small solenoids ( In the small block assy.)
If all of this solenoids working properly then check Vacuum pump capacitor & vacuum sensor.Hope this will help you to solve your problem.

Posted on Apr 09, 2010

mhkamran
  • 180 Answers

SOURCE: The high pressure unit is disabled in my Robinair

This is a common problrm of Robinair 34700Z / 347002k & 347112k series machine.so don't worry just do the following :- 1# Verify the ISV tank is not overfilled.if full,remove refrigerant manually from tank. 2# Verify if there is high pressure in the tank.Purge excess air from the tank manually.( Open air purge hose from the tank,then press tank valve as needed) 3#Check the high pressure switch for proper operation,if not then replace high pressure switch.Hope this will solve your problem, if so please vot for it

Posted on Jan 04, 2011

mhkamran
  • 180 Answers

SOURCE: Robinair cooltech 34788 displaced high

You Have to replace the PCB Relay Board

Posted on May 17, 2011

mhkamran
  • 180 Answers

SOURCE: I'm Archie i've a Robinair

This is a common problem of Model: 34788, 34788-I, 34988, AC34788, GE48800 etc.
You need to replace air purge solenoid (Air purge solenoid located on top of the ISV tank, if you open front panel cover then you can see it on top of the tank).
After doing above stapes and your problem still exist then you have to replace PCB relay board. Just claim for warranty (Air purge solenoid and PCB relay board) from where you bought the machine.
Hope this will help to solve your problem, if so please vote for it for farther help! Good luck

Posted on May 17, 2011

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