DIY Home Improvement, Remodeling & Repair Forum > Appliances > HVAC > Amana Furnace Blower problem




Reply
 
Thread Tools Search this Thread Display Modes
Old 11-13-2008, 08:18 AM  
MILL123
Junior Member
registry_dropdown_11054_25192
 
Join Date: Nov 2008
Posts: 1
Default Amana Furnace Blower problem

I have a pair of Amana 90% efficient gas furnaces model #'s GUC045B30B which were installed in 1990. On one of the furnaces, the blower does not go on half of the time. The electric ignitor ignites, gas is released & the furnace heats up. It then attempts to start the blower but half the time the blower never starts up. It sometimes makes (3) attempts or so & then shuts down. The wheel inside the blower moves easily & is not stuck. Could this problem be caused by a faulty switch or relay? Any help is appreciated.

Thank you.


MILL123 is offline  
 
Reply With Quote
Old 11-13-2008, 09:56 AM  
kok328
Supporting Member
HRT_SUPPORTER.png
registry_dropdown_4883_25195
 
Join Date: Nov 2007
Location: Grand Blanc, MI
Posts: 2,315
Liked 144 Times on 122 Posts
Likes Given: 71

Default

It could be a faulty switch or relay. It could be a bad contactor, it could be a bad fan motor capacitor, it could be a bad limit switch or it could be a bad fan motor.
Only handson troubleshooting will yield the correct answer.


kok328 is offline  
 
Reply With Quote
Old 09-26-2012, 11:31 AM  
bwood316
Junior Member
registry_dropdown_28693_77532
 
Join Date: Sep 2012
Posts: 1
Default

furnace ignitor not coming on and blower not coming on as well
bwood316 is offline  
 
Reply With Quote
Old 09-26-2012, 02:02 PM  
Wuzzat?
Banned
registry_dropdown_17632_77535
 
Join Date: Jan 2010
Posts: 2,328
Liked 168 Times on 155 Posts
Likes Given: 94

Default

The voltage across the closed blower motor relay contacts should be less than 0.1V.

Post a schematic and we can step you through it.

Do not replace parts by trial and error; sometimes it's just a corroded connection that you can fix with fine sandpaper and sometimes the new parts will immediately burn out because you haven't found the root cause.

BTW, one forum survey had the avg. residential HVAC lifetime to be 23 yrs, with a max of 80.

Last edited by Wuzzat?; 09-26-2012 at 02:13 PM.
Wuzzat? is offline  
 
Reply With Quote
Reply


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


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Gas Furnace Maintenance Icehouse HVAC 4 02-17-2012 12:32 PM
Thermostat or furnace problem? dakuda HVAC 8 01-02-2010 03:05 PM
A/C Question: Just replaced Fan Control Unit and now the Blower false starts cooling redmachodevil HVAC 0 08-10-2008 10:14 AM
Amana furnace, no heat, red light blinks 3 times, fan works. azjost HVAC 1 04-09-2008 04:12 PM
Attic Furnace remodel101 HVAC 0 02-07-2007 11:20 PM

Newest Threads

LATEST SPONSOR DEALS