Begin your journey to appliance repair mastery…

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

FAQs | Repair Videos | Academy | Newsletter | Podcast | Contact

Stay connected with us...

Samurai on Facebook - become a fan today! Sign up for our free newsletter and keep up with all things Appliantology. Subscribe to our YouTube channel for lots of appliance repair tips and help! Follow the Samurai on Twitter and get timely morsels of Appliantological Wisdom! Subscribe to our MST Radio podcast to learn secrets of the trade.
  • Announcements

    • Samurai Appliance Repair Man

      Webinar Recordings Index Page   11/07/2017

      On-demand appliance repair training videos for Professional Appliantologist members Over 30 hours (and growing!) of original, high quality appliance training webinars developed and given by yours truly are at your fingertips, on topics you won't find anywhere else. Fill in those knowledge gaps, strengthen those areas of uncertainty, and boost your skills. Watch on mobile or desktop at your convenience whenever, wherever.  Ultra Short Primer on Basic Electricity, Circuits, Ohm's Law, and Schematic Reading (Length: 1:04:48) Basic Refrigerator Troubleshooting (Length: 1:10:45) Schematic Reading Workshop, 10/2015 (Length 1:19:08) Troubleshooting Strategies for Computer-Controlled Appliances (Length: 48:34) Semiconductors and PN Junctions (Length: 1:04:37) Appliance Temperature Sensing Devices & Technology (Length: 1:27:33) Voltage Measurements, Meters, Ghost Voltages, and Triac-controlled Neutrals (Length: 1:29:32) Troubleshooting with Tech Sheets, Part 1, 4/2016 (Length: 1:09:26) Troubleshooting with Tech Sheets, Part 2, 4/2016 (Length: 1:21:11) Tech Sheet Review, 4/9/2016: Bosch Speed Cooker, Amana Refrigerator, GE Glass Cooktop Range (Length: 1:22:58) Pulse Width Modulated (PWM) Switches used in Samsung Switched Mode Power Supplies (SMPS) (Length: 27:07) PWM Computer Cooling Fan in a Whirlpool Refrigerator (Length: 14:53) Understanding AC Split-phase Household Power Supplies (Length: 52:41) Troubleshooting a Samsung Electric Dryer without Disassembly using Live Tests and the Schematic (Length: 22:47) Troubleshooting a Bosch Dishwasher No-Heat Problem using the Schematic and Live Tests (Length: 15:38) Linear Motors and Linear Compressors (Length: 55:54) Bi-directional PSC Drive Motor Systems in Whirlpool VM Washers (Length: 56:52) Appliance Service Call Structure and Troubleshooting Strategies (Length: 1:00:16) The Ten Step Troubleshooting Tango and Workshop Exercises (Length: 1:35:39) Troubleshooting Ten-Step Tango Advanced Workshop (Length: 1:32:06) Ten-Step Tango Troubleshooting Workshop: Refrigerators (Length: 1:35:57) Whirlpool Duet Washer Schematic Analysis & Whirlpool Dryer Moisture Sensor System (Length: 1:03:04) Neutral Vs. Ground, Inverter Microwave, Digital Communications, Loading Down in DC loads, and more! (Length: 1:14:45) Gas Oven Service Call After a Parts Changing Monkey (Length: 36:04) AFCI and GFCI Circuit Protection Technology (Length: 41:26) Troubleshooting Samsung Refrigerators and more (Length: 1:29:58) 3-way Valves and Dual Evaporator Refrigerators (Length: 1:15:45) Split-Phase Compressors and PTC Start Devices (Length: 1:11:57) Gas Dryer Ignition Systems (Length: 53:50) Refrigerator Sealed System Thermodynamics, Part 1 (Length: 43:07) Refrigerator Sealed System Thermodynamics, Part 2 (Length: 1:09:09) Refrigerator Sealed System Thermodynamics, Part 3 (Length: 1:11:56) Refrigerator Sealed System Thermodynamics, Part 4 (Length: 37:45) Refrigerator Sealed System Thermodynamics, Part 5 (Length: 16:35) To access these webinars and all the other info-goodies here at Appliantology, become a Professional Appliantologist today. If you need cost-effective, time-flexible, state-of-the-art appliance technical training, check out the Master Samurai Tech Academy.

Search the Community

Showing results for tags 'pressure switch'.

More search options

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


  • Appliantology Welcome Center
    • Kendo Masters Hall of Fame
    • Site Orientation
    • Announcements
  • DIYer Appliance Repair Forums
    • DIY Appliance Repair Help
    • Find a Local Tech
    • Appliance Haikus
  • Appliance Service Manual Requests
    • Appliance Service Manual Requests Forum
  • Professional Appliance Technician Forums
    • Appliance Repair Tech Forum
    • Professional Appliantologist Webinars Forum
    • Samurai's Appliance Repair Video Classroom
    • Samurai’s Appliance Puzzles
    • The Dojo


  • Samurai Appliance Repair Man's Blog
  • kdog's Blog
  • Mrs. Samurai's Kitchen
  • DurhamAppliance's Blog
  • applianceman97's Blog
  • LI-NY Tech's Blog
  • TheApplianceTechnician's Blog
  • MicaBay's Semi Knowlegable Blog
  • tpoindexter's Blog
  • Smashycomman's Blog
  • acfixerdude's Blog
  • Getting too comfortable, complacent, or stuck in your ways.
  • Tech notes
  • Tech notes
  • Eugene's blog about stores, fixing, life, and more!
  • Moostafa's Hookah Tent
  • Super Rob
  • Son of Samurai's Blog
  • Quick's Blog
  • Mikeyjd's Appliance Sales and Repair Journey
  • BoardFruit Keypad - Solution for failed oven keypads
  • Ronny K
  • Rob
  • Beyonddoubt's Blog
  • timt109
  • Jacko
  • David
  • chinaski's blog
  • Papa Joe's Appliance Repair


  • Appliance Repair Manual Stash Access File®
  • Appliance Repair Manual Pot Luck Supper


  • Tech Training
  • Birthdays

Found 5 results

  1. Pressure Switch Error

    I have a Trane XR90 propane furnace that is not working for me. I get 3 flashing lights, which specifies that I am getting a Pressure Switch failure. I have done some troubleshooting and the situation is not getting any clearer. If I check continuity on the two connectors on the pressure switch when the inducer fan starts it DOES trigger, so it is sending the "good to go" signal to the control board. But the furnace never tries to light and I get the three flashes. I also checked voltage on the yellow wire going to the pressure switch and I am seeing 27-ish volts, so the board is sending power to it. I am leaning towards the idea that the control board is bad but I would hate to spend that money if that is not the case. I would really appreciate any insights or help on this issue. Thanks!
  2. Maytag Neptune Washer MAH8700AWW will not pump out water. During the Rinse - Spin Cycle, the washer will fill, tumble, stop with 9 minutes remaining on the time display, then eventually show a ND [ no drain ] code. I put the washer on the Spin Only Cycle, but with water in the tub the washer would not spin. I replaced the pump [ WP34001340 ], but it did not solve the no drain problem. With water in the tub, I disconnected the hose which attaches to the pressure switch and capped the switch's vacuum tube where the hose is supposed to be connected. With the vacuum tube capped, and the washer set on Spin Only it will go into its spin cycle despite there being water in the tub, but the washer still won't pump out the water. I checked the pressure switch for continuity [ WP34001324 ] and it is closed between terminals 1 and 3, but open between terminals 1 - 2, and 2 - 3. My first question is should the terminals on the pressure switch read continuity between all 3 terminals or just 1 and 3? My second question is would a defective pressure switch cause the electric water pump not to turn on, or is this a Control Board issue? Thanks
  3. Hi all, been awhile since I've been on here but I've got one for the experts on "furnace-tology". Strong, gusty 45mph winds typical for Fall here have been messing with my induced draft blower vacuum signal to the pressure switch, especially the cyclonic nature of said winds this year. Shuts the furnace down prematurely when alternating positive/negative pressure waves in the flue mess with the blower vacuum signal from gusts blasting across the furnace exhaust flue outlet above the roofline. Flue terminates approximately 22 feet above the ground, through the garage roof, along the split level exterior wall, through the adjacent eave of the attached main house terminating about 3 feet above the roofline. PVC 2.5 inch diameter. Result: the pressure switch diaphram plunger taps the microswitch toggle just slightly enough to open the circuit making the furnace controller think the draft blower has failed--result, premature flame shutdown and begin another inefficient heating cycle. The flue top has a convex rain cap of course. Draft blower is new last winter. Pressure switch vacuum tests prove ok for possible torn diaphram. Pressure microswitch continuity tests check ok at microswitch. I relocated the pressure switch closer to the draft blower with a much shorter hose a week ago when the wind was blowing thinking that would help with a stronger vacuum signal but particularly bad winds this weekend proved that futile. Tonight it’s calm here for the first time in 4 days and the furnace is completing heating cycles normally. I’m now wondering what I can do to keep gusts from creating pressure waves down the flue or wind-capping the flue. Does anybody know of a flue-cap product for just such a condition? Is there a flue cap made specifically for wind problems like this?
  4. From the album Washer Repair

    Most commonly replaced for the dreaded F35 error code. Buy the replacement pressure switch ==> here.
  5. My RHEEM horizontal gas furnace will not heat. When thermostat calls for heat, the exhaust blower comes on but nothing else happens. I had service tech to check it out. He said I needed a new pressure switch, the one that sends signal to the igniter. I replaced pressure switch (P1 on schematic) with a new one, but get the same results. There is not enough vacuum from the exhaust blower to activate the pressure switch. I have disconnected the flue from blower so I know flue obstruction is not the problem. I can manually operate the pressure switch and furnace operates as it should. Any thoughts on how to increase vacuum? Model # RGJA-10ETAGS Serial # CF5D307D50932537 Thanks