DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > HVAC > Amana furnace, no heat, red light blinks 3 times, fan works.




Help Support House Repair Talk by donating using the link above.
Reply
 
Thread Tools Search this Thread
Old 04-09-2008, 04:04 PM  
azjost
Junior Member
Join Date: Apr 2008
Posts: 1
Default Amana furnace, no heat, red light blinks 3 times, fan works.

Amana Gas Furnace. Furnace blower appears to work, but no heat. 3 Blinking red lights. I googled this, someone said 3 lights can mean:

1. The exterior vent pipe is blocked.
2. The pressure switch is bad or wired wrong
3. The ventor is clogged or jammed.

Attempted some cleaning with shop vac to see if there was an obstruction. When shop vac was stuck into exhaust vent pipe, the furnace kicks on. As soon as I take it out, it shuts off. Not sure what the problem is, but I would like it resolved today if I can possibly do it.

If not, I'll call a pro, but since I'll be calling out of the phone book, I want to minimize the chance of being ripped off by at least seeming knowledgeable.

Thanks.


azjost is offline  
 
Reply With Quote
Old 04-09-2008, 04:12 PM  
kok328
Senior Member
Join Date: Nov 2007
Location: Grand Blanc, MI
Posts: 2,725
Liked 241 Times on 204 Posts
Likes Given: 113

Default

Sounds like the venter motor is not achieving enough volume to satisfy the required water columns for the pressure switch.

Pressure switch safety proofs come in all shapes and forms.
Sail switch, pressure switch, centrifugal dry contact switch, etc....).

Check the venter motor (not the blower motor) for proper operation. If you have proper voltage to the motor but, it does not ramp up, you could have a bad/stuck motor and/or a bad motor capacitor (if applicable).
kok328 is offline  
 
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Southwind 434369 fan: light on/off works; light dimming, fan stopped working ilyaz Electrical and Wiring 2 04-22-2017 06:30 PM
Blower works but no heat pdho172 HVAC 3 01-25-2012 04:59 PM
trane xe 90 blinks 6 times debyag HVAC 3 04-04-2009 09:32 AM
Ac works, no heat aces11 HVAC 1 10-17-2006 09:01 PM
Amana heat pumps - your thoughts, experiences mikeb HVAC 1 09-22-2005 01:38 PM