If it were me and I trusted the shop I would probably pay the $180 for the diagnostic. Once you know what's wrong, you can decide whether to have them repair it, do it yourself, or replace it.
Otherwise it's a careful, deliberate process of testing and elimination to figure out what is wrong and repair it. What is your time worth? On Tue, Apr 5, 2022, at 9:24 PM, Kaleb Striplin via Mercedes wrote: > I have a Robinair 34788 fully automatic machine that I have had for > about 4 or so years now. Nearest I can tell it is probably 10-15 years > old, not sure. Per the menu look like it has has around 2600 lbs ran > thru it. Not sure if that is a lot or not for these machines. Anyway, > last year it got to where it was throwing a low pressure error when you > turn it on, then gives an oil drain error when doing a recovery. > Several times it has ended up venting all of its stored R134 thru the > vacuum vent line into the oil drain bottle. I also suspect the ball > valves on top of the internal tank are leaking. I am betting the low > pressure error is the low pressure transducer. I also tested the > solenoids and they all appear to work so I am thinking the oil drain > error could be the circuit board. When it is supposed to be doing an oil > drain it never even opens the solenoid. > > Called a local service place for these and if they come here its $250 > for the drive plus $180 for the diagnostic, or I can take it to Tulsa > and just pay the $180, then pay whatever labor for the repairs plus > parts. Assuming it needs all 3 ball valves those are around $60 each. > The transducer is around $150 to $180 depending on the website. Circuit > board is about $350. So if it actually needs all this I would probably > be looking at a grand to fix this machine. That does not factor in any > additional labor. > > I would always just order the transducer and see if that fixes the rest > of the problems (which I am not hopeful of), or pay the $180 to see what > is wrong and what it would cost to fix it. I am however considering > just buying a newer machine. There is one exactly like mine but appears > to have been used a lot less and includes a 30lb cylinder: > > https://www.facebook.com/marketplace/item/5143233472435476/?ref=search&referral_code=marketplace_search&referral_story_type=post&tracking=browse_serp%3Adc0e9849-915e-40a4-b3d5-28817f9adfa7 > > Also looking at these: > > https://www.facebook.com/marketplace/item/965256667454473?ref=search&referral_code=marketplace_search&referral_story_type=post&tracking=browse_serp%3Adc0e9849-915e-40a4-b3d5-28817f9adfa7 > > https://www.facebook.com/marketplace/item/274691608128011?ref=search&referral_code=marketplace_search&referral_story_type=post&tracking=browse_serp%3Adc0e9849-915e-40a4-b3d5-28817f9adfa7 > > https://www.facebook.com/marketplace/item/698606498164730/?ref=saved&referral_code=null > > I know these are a lot of money but I actually do quite a bit of AC work > for my own fleet of cars and projects. Anybody have any thoughts on > fixing mine or spending the money on a newer one? > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
