Trane Voyager

[dandyme]

YCD090C4HOBE
L46103639D
would not lite off, outlet gas pressure, 1st check___-0.33"
ignitor good,draft prior to gas valve opening___-2.65"
after ignition failure, gas valve energizes 2 more times without inducer engaging
could not get gas pressure screwed down any further, it actually would not go below 1.1" on subsequent tries to fire and adjust

ok, bad gas valve

never seen the gas valve engage without inducer before
ok,bad ignition board

here's the clincher of things i've never noticed/seen on voyager, flue passages out the back of HX actually move (spin) when grabbed and shaken
that can't be good


did i miss something here?

[local553]

take the top off and check,sounds like bad exchanger.As far as other problem sounds like ignition board.

[dandyme]

I had the top off, generally don't miss the opportunity to condemn a choo-choo

no physical holes found, just those loose tube on the back of HX

[Phisher]

You can't get a good gas pressure reading with the inducer fan off. Did you check for voltage at the inducer motor when the gas valve energizes?

[darter1]

You may have a bad inducer motor or like Local 553 said a bad board. Those are 2 speed motors on that unit. I had a 5ton unit several years back that would not fire. All my readings were perfect. Turned out a spider made a web in the oriface on the inside of the air intake plate. Cleaned it out and all worked fine. Good luck

[dandyme]

inducer not powering up those last 2 times before lock out, just gas valve.

have had bad ignition boards before, but not same symptoms

[Serviceman777]

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[jpsmith1cm]

Serviceman777

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[timebuilder]

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