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  2. Budget Appliance Repair

    ohms or capacitance reading on a water valve?

    @ECtoFix I've never seen a diode on a solenoid coil to dampen flyback?/EMF? voltage when voltage is cut to a a coil - I've only seen capacitors used on the coils for this purpose. By any chance do they maybe use diodes on coils in a DC circuit and use capacitors in AC circuits that I'm more familiar with?
  3. Today
  4. Vance R

    LG LMXC23746S Fridge not cooling

    Yes and pull the defrost drain tubes. Look in the duckbill valves for dye from the evaporators.
  5. 6010fd12

    LG LMXC23746S Fridge not cooling

    Yup! You are right on the money with that one! So the next step is to use a UV light and look all around the fittings and pipes correct?
  6. Vance R

    LG LMXC23746S Fridge not cooling

    These refrigerators usually use 4.76 or 5.11 oz of refrigerant. Lots of small amounts to track. Hoping the leak is not one of the lokring fittings. No fixing, just cut it off and hope there is room to braze on a repair section.
  7. ECtoFix

    LG LMXC23746S Fridge not cooling

    I didn't even think of that! Yup, that would be simpler. My thinking is from habitually using nitro without any reservations, but having to account for every stupid ounce of refrigerant I used (YES - we did that!).
  8. ECtoFix

    LG LMXC23746S Fridge not cooling

    @6010fd12, read what @Vance R says. He's far more familiar with those units than I am.
  9. ECtoFix

    LG LMXC23746S Fridge not cooling

    With your perceived charge being so minimal, that almost qualifies as a tracer charge (enough for an electronic leak detector to sense). Your efforts to recover that lille amount would amount to nothing. So, just put the nitro in with the refrigerant. Here's an EPA guide on leak detection: https://www.epa.gov/sites/production/files/documents/RealZeroGuidetoGoodLeakTesting.pdf
  10. Vance R

    LG LMXC23746S Fridge not cooling

    There is probably already has a dye drier in the system. Hard to tell from video but it looks like a ADH73150210 drier is being used. The ends of the tubing on the drier come pre-swaged to make installing easier. use a mirror to look for the printing UV DYE. You can get light and glass from auto parts store. Someone used lokrings to install the compressor - potential leak spots. Since your gauges read near 0 psi with system off your system is empty or nearly empty. Need to find the leak before moving on. If you can't get nitrogen, just use alittle refrigerant it is probably a large leak if it didn't last a day.
  11. 6010fd12

    LG LMXC23746S Fridge not cooling

    Yikes! Ok gotcha. I think I might have found a welding store near me that might sell some. After I purchase the nitrogen how do I proceed? I'm assuming first I recover the system and then pressurize the high side first to (50 psi? or some low number) and spray that liquid all over to try and pinpoint a leak?
  12. ECtoFix

    LG LMXC23746S Fridge not cooling

    ...and what you're looking at THERE is just a container. Nobody is going to ship you a container with nitro already in it. Too much PSI. Call me a BOOMER, but that's how I understand it.
  13. ECtoFix

    LG LMXC23746S Fridge not cooling

    No, you're not looking for LIQUID nitro! Heck NO! Just a bottle with gaseous dry nitrogen in it. Much like a SCUBA tank of the stuff. Typically charge to 2000 psi. 20 or 40 Cu.Ft. Has to be purchased locally. Then a regulator. Do NOT attempt pressurizing a system without a regulator! My former supervisor's instructor (back in the '60s) got his HEAD blown off due to that man's lack of using a regulator! Try United Refrigeration or JohnStone Supply.
  14. ECtoFix

    LG LMXC23746S Fridge not cooling

    The dye would need to be added with a charge. To ME, adding a dye is an act of desperation since other leak detection methods are preferable. In that unit's present state, it's best to pressurize with nitrogen and squirt some Big Blu at suspect joints/components. I've heard the evap coils on those LG refrigerators a prone to leakage.
  15. 6010fd12

    LG LMXC23746S Fridge not cooling

    Hum. Ok I will try to get my hands on that. I just can't find a small cheap container online anywhere. The cheapest one I can find is $170 and thats without guages unless I'm looking at the wrong thing. Do you have any suggestions where I can get my hands on a set for $150 like you mentioned?
  16. ECtoFix

    LG LMXC23746S Fridge not cooling

    I stated what I did under the assumption that your gauges were INDEED correctly connected. That's an essential tool for HVAC/R. The bottle, a regulator and the contents from your local supply house. About $150.00 maybe?
  17. 6010fd12

    LG LMXC23746S Fridge not cooling

    Gotcha. I don't own any nitrogen so letting some UV R134a into the system and cycling the compressor for a while would be the way to go or to just use the leak detector correct? I just don't understand how I can accomplish it without turning on the compressor. So right now what do you think my plan of action should be. Sorry again I don't work in HVAC so you might explain this to me like I'm 5.
  18. ECtoFix

    LG LMXC23746S Fridge not cooling

    BTW: Don't run that unit anymore until you know where the leak is at. If on the high side, you can repair the leak using a torch (with nitro flow), leak test, evacuate & recharge - hopefully with no anticipated problems. All that beings that the high side has remained above atmospheric pressure during operation. If the leak is on the low side and it's operated in a vacuum, then the compressor oil is screwed. With it having POE oil (used with R134A systems), that stuff is hygroscopic and sucks up moisture more than a sponge. So, if you don't change the oil, flush the system and replace the oil - it will become acidic and the refrigerator might last a just a few years at best.
  19. 6010fd12

    LG LMXC23746S Fridge not cooling

    THANK YOU! THIS WAS MY EXACT THOUGH PROCESS! I was so confused by what the person on reddit was saying about a restriction it just didn't make sense to me. If there really was a restriction on say the condenser I would think that most of the refrigerant would be trapped on the high side and there would be vacuum on the low side as the compressor was trying to suck in refrigerant. It just made a lot more sense to me that since the high side pipe wasn't getting hot and the pressure reading was low on the high side that I was most likely missing refrigerant. I just didn't want to start adding some willy nilly without knowing how much was in the system. This makes me so happy to hear that! Honestly I am very thankful that you could confirm my suspicions. Now I just need to wait on that recovery system to see if it is true.
  20. ECtoFix

    LG LMXC23746S Fridge not cooling

    You're out of refrigerant. Definitely a low charge - either from a leak or poor repair practices. I'd say a leak since NO tech would leave it like that. You will need to find that that leak. Pressurize with nitrogen and a bubble test w/visual inspection is how I've always done it. An electronic leak detector can get you in the ball park, but only that. Still gotta narrow it down with a visual inspection or bubbles. There's no other ways other that a dye and test with a UV light. I never liked that method. Messy.
  21. 6010fd12

    LG LMXC23746S Fridge not cooling

    I've actually been talking with someone on reddit about this and he believe that there is a restriction. I hooked up some gauges and here are the readings that I got. Video I might now know much about HVAC but that high side definitely looks low to me. I wanted to know what your thought were on this. I understand you only deal with commerical systems but any point in the right direction would be extremely helpful. I have ordered a recovery system so I can see if the system is actually full or is missing freon and if it's not I will most likely try to install a new condenser in or a 3 way valve like I was suggested on reddit. I don't own a nitrogen system so right now thats out of the question.
  22. Captain Dunsel

    service manual

    Seems it is already in the system.Here is the tech sheet! Similar to this service manual.
  23. ECtoFix

    ohms or capacitance reading on a water valve?

    Thanks, Vance. Yes, I use an entirely different test for HV diodes in microwaves since multi meters can't do that. A test which requires a DC voltmeter, a 9v battery and the actual diode all connected in series. 5-7 VDC in one direction and 0-0.1VDC in the other.
  24. Singlewing

    service manual

    is that approved automatically or needs to be requested
  25. ECtoFix

    ohms or capacitance reading on a water valve?

    ANYWAY... Maybe CURTIS (Wilbur-Curtis) got their terminology a bit twisted regarding a meter's settings and they meant to say the meter should be set to OHMS. ? ? I looked at the schematic from a manual on PartsTown (PDF page 27). The solenoids all appear to be rated for 120v (AC?). Here's that manual: https://static-pt.com/modelManual/WC-GEMSS10A1000_spm.pdf?v=1581571875208 I'm guessing that those valves (the inlet, brew or bypass) might INTERNALLY have what's referred to as a flyback diode (sometimes called a snubber diode, commutating diode, freewheeling diode, suppressor diode, clamp diode, or catch diode). Those have become common nowadays to prevent transient voltages from damaging delicate control boards. After all, EVERY coil in any relay or solenoid can BRIEFLY become a VERY short-termed power source through the "powers" of induction. An OHMMETER (NOT in diode test) reading would be skewed by reading through BOTH, a coil AND a diode - based on the ohmmeter's polarity. In one direction, you'd be measuring pretty much JUST the solenoid valve coil alone (with its HIGH impedance) at the rated 1300Ω or less...or the coil AND the forward-biased diode (with the diode fully conducting along with the valve's coil) to get the 5Ω or MORE. Those are my thoughts and I'm sticking to them.
  26. Vance R

    ohms or capacitance reading on a water valve?

    The basic is the DIODE test use higher voltage than resistance to forward bias diodes for testing. This works for all diode, except High Voltage diodes for microwaves. For HV diode you need a 9 volt battery.
  27. Vance R

    service manual

    MOD will have to approve upload before you can access file.
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