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Feb 2, 2020 | 06:28 PM

VetteMan2012

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HVAC Dead

I just went through the process of putting new LED bulbs in my HVAC unit. Now it won't come on at all!! Any thoughts?

Feb 2, 2020 | 06:48 PM

Ed Ramberger

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I am pretty sure you need some resistors inline with the LEDs for that project from what I have read.

Feb 2, 2020 | 08:23 PM

bobgroger

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Just a thought.... Did you turn the display **** to just before the click? That caught me.

Feb 2, 2020 | 10:53 PM

VetteMan2012

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I didn't use the resistors. Need to find out which ones I need.

Feb 3, 2020 | 10:56 AM

Vetteman Jack

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Feb 3, 2020 | 10:37 PM

C5MSG2004Vert

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Not sure what you put in there, but if the polarity is reversed they won't turn on but will not be damaged and can be installed properly and will work. If they don't have a built in resistor you will probably short them if you connect them with incorrect polarity to 12 volts. Shorted LED diodes may cause the unit to not power on.

Last edited by C5MSG2004Vert; Feb 4, 2020 at 02:47 AM.

Feb 4, 2020 | 12:24 AM

BigGun

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Quote:

Originally Posted by David Baumgartner

I just went through the process of putting new LED bulbs in my HVAC unit. Now it won't come on at all!! Any thoughts?

You broke it. Whats your skill level and experience?

Feb 4, 2020 | 08:33 AM

Ed Ramberger

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Quote:

Originally Posted by BigGun

You broke it. Whats your skill level and experience?

It's not necessarily broke, but it might be time to send it to a vendor that does this and pay the 60-100$.

I never installed the LEDs, I did regular bulbs. LEDs are polarity sensitive, so that is one possibility - they could be backwards. The other is what I previously mentioned about needing to use little resistors when installing LEDs. The third is that something went south.

Last edited by Ed Ramberger; Feb 4, 2020 at 08:34 AM.