Jump to content
Click here to check out our structured, online appliance repair training courses for rookies and experienced techs.

FAQs | Repair Videos | Academy | Newsletter | Contact

Stay connected with us...

Subscribe to our YouTube channel for lots of appliance repair tips and help! Subscribe to our MST Radio podcast to learn secrets of the trade. Sign up for our free newsletter and keep up with all things Appliantology.

All Activity

This stream auto-updates     

  1. Today
  2. We run into water inlet solenoid valves in many different situations -- washers, dishwashers, refrigerators -- so it's important to have a firm grasp on exactly how they work. For example, I just talked with a tech recently who was wondering why low water pressure can cause inlet valves to leak. It seemed counter-intuitive to him, and he's not wrong. Wouldn't it make more sense for high water pressure to cause leaking? But once you learn exactly how these valves work, it will all make sense. First, the solenoid part. To boil it down, all a solenoid is is a coil of wire and a shaft that fits inside the coil. When current flows through the coil, it produces a magnetic field, which pulls the shaft into the coil and holds it there. Simple as that. If you put a plunger on the end of that shaft, then you've got the moving component of an inlet valve. When current flows through the valve coil, the shaft and the plunger lift, allowing water to flow. That explains how the valve opens. But what about closing again? For this purpose, there's a spring that pushes the plunger back into place once the solenoid deactivates. But keep in mind that this plunger has to make a tight enough seal to keep water at high pressure from leaking through. A little bitty spring isn't going to cut it. The simple solution to this is to use that high pressure to the valve's advantage. See the diagram below: You see, the water is actually allowed to fill the space above the plunger. That means that when the valve isn't energized, the water pressure helps make the seal that keeps water from getting through the valve. Pretty nifty! So now you see why low water pressure becomes a problem. Typically, water inlet valves have a minimum spec of 20 PSI. Anything less than that, and the water pressure just isn't enough to make a reliable seal. That's when you get inlet valves "weeping" -- letting a small, slow trickle of water through. Not a problem with the valves themselves, but with the water pressure coming to them. Want to hone your appliance repair prowess by learning from the industry's best? Click here to enroll today in online, self-paced appliance repair training.
  3. Son of Samurai

    Kenmore/Frigidaire Dual fuel range - need service manual

    Here's what I could find for a service manual:
  4. Version 1.0.0


    Kenmore Frigidaire 790.79623700 Range Service Manual
  5. Kenmore Frigidaire 790.79623700 Range Service Manual View File Kenmore Frigidaire 790.79623700 Range Service Manual Submitter Son of Samurai Submitted 07/09/2020 Category Appliance Repair Manual Pot Luck Supper  
  6. Frigidaire GLFU1467FW0 Freezer Tech Sheet View File PUB 216988500 Submitter Vance R Submitted 07/08/2020 Category Appliance Repair Manual Pot Luck Supper  
  7. Son of Samurai

    Seeking Manual for Electrolux Speed Oven

    Thanks, Captain!
  8. Electrolux E30SO75FPSA High Speed Convection Microwave Oven View File Pub 316439257 Submitter Captain Dunsel Submitted 07/08/2020 Category Appliance Repair Manual Pot Luck Supper  
  9. Son of Samurai

    Frigidaire range tech Sheet please

    Thanks, Captain!
  10. Kenmore Frigidaire 790.90102204 Range Tech Sheet and Schematic View File Pub Tech Sheet 318202605 Pub Wiring Diagram 318198610 Submitter Captain Dunsel Submitted 07/08/2020 Category Appliance Repair Manual Pot Luck Supper  
  11. Son of Samurai

    Need manual so I can troubleshoot icemaker

    Thanks, Captain!
  12. Whirlpool WRS571CIDM02 Refrigerator Tech-Sheet View File Pub W11098460 Rev A Submitter Captain Dunsel Submitted 07/08/2020 Category Appliance Repair Manual Pot Luck Supper  
  13. Schism

    What Does "Split-Phase" Really Mean in Motors?

  14. Version 1.0.0


    PUB 216988500
  15. North's Appliance Repair, LLC

    Frigidaire LEQ1452KS0 service manual/tech sheet request

  16. Version 1.0.0


    Pub 316439257
  17. Captain Dunsel

    Seeking Manual for Electrolux Speed Oven

    Uploading service manual.Waiting on approval.
  18. Thank you both! I bought the Maycor item from an Ebay seller.
  19. Captain Dunsel

    Frigidaire LEQ1452KS0 service manual/tech sheet request

    Only can find a tech sheet.
  20. Most of the time it is the line going into the filter housing, assuming it is not a aftermarket filter
  21. Hello, I'm requesting the service manual and tech sheet for the Frigidaire LEQ1452KS0 electric dryer. Thanks!
  22. Seeking a manual for this beast of a microwave. I found a similar model manual but unsure if this model is covered within. Thank you,
  23. Vance R

    Kitchenaid kco253cu toaster oven

    This one on ebay.
  24. Yesterday
  25. Thanks for this post you saved me today!
  26. This is just an educated guess, since your model doesn't come up on the US LG site (possibly a UK-only model, or possibly a character missing?) That style of valve is typically used as a switching valve, with 3 or more refrigerant lines running to it as you pointed out. A true solenoid valve would only have 2 wires going to the coil, and only have 2 operating states, fully open and fully closed. The coil on your valve looks more like a stepper motor (typ. 5 or 6 wires running to it), and is used to precisely control the position of the valve element. I would guess that this valve is being used as an "Electrically-operated expansion valve (EXV or EEV) to provide a variable restriction, to separate the high-pressure and low-pressure sides of the refrigeration system.
  1. Load more activity
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.