Dumbstruck by the new computer-controlled appliances? Let the Samurai enlighten you…

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.
    • Son of Samurai

      [Webinar] Appliantology Workshop   11/09/2017

      Information is the name of the game in the appliance repair trade today. Appliantology is a powerful information tool for the professional appliance repair technician. But just like with any of the more capable tools in your tool bag, many of the more powerful features are hidden from you unless you "read the manual." Ugh! Who wants to do that? Well, this is one time when you don't have to! In this webinar, Team Samurai will personally walk you through the site and show you many of the useful and powerful features that even long-time users probably never knew existed.   
jrork

Trane XL90 Gas furnace wont run

Recommended Posts

jrork

Hi folks. I'm back. This time it's the furnace.

I've got a Trane XL90 gas furnace with a XE1000 heatpump installed for cooling. They're controled by a Honeywell Chronotherm III thermostat.

The problem is the furnace wont start. The thermostat calls for heat and I hear the transformer buzz but that's it. No fans or blowers. The filters are clean. I have 26 volts between R and G at the thermostat.

I can turn the fan to manual and the fan runs and blows air so I know that fan works.

I can also turn the thermostat to cool and the heatpump and fan works perfect.

I've also put new batterys in the thermostat to eliminate that issue.

Are there any suggestions you might have for me on what to look at? I've faily clever and can fix things but this is my first attempt at a furnace.

Thanks a bunch..........john

Share this post


Link to post
Share on other sites

Need appliance parts? Call 877-803-7957 now!

applianceman18007260692

Check to see if the furnace's condensate drain is clogged if the blower is running but there is no heat. Remove the clamps to the trap and drain the trap outlet. Flush out any blockages and reinstall the trap clamps

Share this post


Link to post
Share on other sites
RegUS_PatOff

... I've got a Trane XL90 gas furnace

model number ?
  • Like 1

Share this post


Link to post
Share on other sites
jrork

Thanks guys.

Just for clarrification, the blower is not running. It only runs if it turn the thermostat to "fan" to circulate air. It doesnt run when I turn the thermostat to "heat". The thermostat calls for heat as I can here the click and a buzz from the transformer but nothing happens.

Sorry, I forgot to get the model number. I'll get that tonight.

Thanks again for the help

Share this post


Link to post
Share on other sites
jrork

Woohooo! I came home to get you the model number and messed with it for a while. I began to notice that it would call for heat and the transformer would buzz but that was it. BUT, what I also noticed was when I went to turn it off (no sense in the transformer just buzzing) it would sound like a fan would just start to come on and then shut off.

Cleaned the connections in the thermostat and my wife worked that switch back and forth and TADA!!!! Works like a dream.

Sounds like I'm gonna need a new thermostat someday.

Thanks guys..............

  • Like 1

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now