Duo-Therm 66100 piezo ignitor replacement - Fiberglass RV

Thread Tools Search this Thread Display Modes
Old 06-29-2014, 02:34 PM   #1
Name: geoff
Trailer: bigfoot
Posts: 40
Duo-Therm 66100 piezo ignitor replacement


This is not a good weekend! We are booked to be a Good Spirit Lake SK today, but due to the rainfall warning, we are at home sulking.

I figured this would be a good time to test out the furnace as it's the only appliance I haven't tried out yet since buying our 1981 Bigfoot last year. It has a Duo-Therm 66100 Series Gas-Fired Fan Type Direct Vent Wall Furnace with a Piezo Spark Ignition Kit (part no. 3-16941). Unfortunately, I cannot get the pilot to light. THe fan does turn on when I turn on the thermostat, but there appears to be absolutely no spark when I press the ignitor... I'm at home and plugged into 110V.

Has anyone ever replaced the ignitor in one of these? Where can I find replacement parts? I've tried adventurerv.net and campingworld.ca, campkins.com... Any suggestions?

(and to kick me when I'm down - my roof is leaking at the bathroom vent, it's pouring rain, and none of the RV parts stores are open Sundays )

spartacus is offline   Reply With Quote
Old 06-29-2014, 03:55 PM   #2
Senior Member
Roy in TO's Avatar
Name: Roy
Trailer: 1972 boler American and 1979 Trillium 4500
Posts: 4,994
Can you hear and feel the click of the ignitor? This describes the mechanical aspect: Piezo ignition - Wikipedia, the free encyclopedia
which gives this link showing detail on how they work

If so, I'd be looking at the placement of the electrode. If not, check your local Cdn Tire or Home depot etc. in the BBQ section for a suitable replacement. Thinking of the ones that are wired to start a BBQ, not the portable lighters shown in the link.

The good news is, the author shows you how to make one using rain water: http://rimstar.org/sdenergy/piezoele...water_rain.htm

Roy in TO is online now   Reply With Quote
Old 06-29-2014, 04:02 PM   #3
Senior Member
Name: Steve
Trailer: Casita 17 ft DLX SD & 21 ft SOB
NW Wisconsin
Posts: 3,516
Try lighting the pilot manually and see if the furnace functions properly. Maybe something is blocking gas flow or power to the ignitor
steve dunham is offline   Reply With Quote
Old 06-30-2014, 07:01 PM   #4
Name: geoff
Trailer: bigfoot
Posts: 40
Lol. My bad. I took the little door off to check the placement of the electrode and discovered that what I had been staring at through the window is not the pilot at all. The pilot is off to the side, you can only see it by looking at an angle through the window. Tried it again and the pilot started the first time! And the furnace is blowing hotter than I expected.

Now to replace my leaky bathroom vent...

Sent from my Nexus 5 using Fiberglass RV mobile app
spartacus is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Replacing Piezo Ignitor in Dometic RM 2193 Parker Buckley Problem Solving | Owners Helping Owners 3 10-24-2012 05:56 PM
Duo-Therm 65810-2 (pilot/thermocouple) joe.stubbs Problem Solving | Owners Helping Owners 2 07-15-2009 11:55 PM
Trillium 75 Duo Therm Heater Asbestos? Kirsten M Problem Solving | Owners Helping Owners 1 05-20-2009 09:33 PM
Duo-Therm RV furnace for sale Marv Watson Care and Feeding of Molded Fiberglass Trailers 0 04-20-2009 05:21 PM
Duo-Therm Quick Start Kit 3102903.006 Michael Pupeza Problem Solving | Owners Helping Owners 3 12-18-2008 07:16 PM

» Upcoming Events
No events scheduled in
the next 465 days.
» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 06:59 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.