I'd hope that one of the things the diagnostic will tell you is an overall condition of the machine. If they say "this thing is basically just worn out" then you can buy the other one and keep the old one for parts.
On Tue, Apr 5, 2022, at 9:52 PM, Kaleb Striplin via Mercedes wrote: > This machine has 2 pressure transducers one for the low side and one > for accumulator. When I switch the connectors between the 2 the error > changes to accumulator pressure error so to me that tells me the low > pressure one is bad. If I leave the connections disconnected I get no > error. The bigger problem is why it’s venting refrigerant. I suppose I > could pay the diagnostic fee and see what I am looking at. Just afraid > even if I get it fixed then something else goes wrong. I guess I could > buy that one like mine and keep this one for parts. > > Sent from my iPhone > >> On Apr 5, 2022, at 8:42 PM, Allan Streib via Mercedes >> <mercedes@okiebenz.com> wrote: >> >> 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 >> > > > _______________________________________ > 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
