Carrier Blown 3 Amp Fuse Troubleshoot - HVAC - DIY Chatroom Home Improvement Forum
Advertisement


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 01-06-2011, 07:07 PM   #1
Newbie
 
Join Date: Jan 2011
Posts: 3
Rewards Points: 10
Unhappy

Carrier blown 3 amp fuse troubleshoot


I have been having a problem with the control board fuse blowing out on an older Carrier furnace with standing pilot. furnace model# 58GFA120-LC. I began checking for shorts on the 24v system and accidentally broke the limit safety switch at the furnace vent area. I suspect that this switch was bad to begin with because the draft inducer ran fine with the switch wires disconnected but naturally the gas valve didn't operate. When the switch was connected, the draft inducer airflow was surging just before the fuse would blow. Would a bad safety switch cause the airflow to surge before blowing the fuse?

Advertisement

sportster_16301 is offline   Reply With Quote
Old 01-07-2011, 04:15 AM   #2
An old Tradesmen
 
Join Date: Oct 2008
Location: Somewhere
Posts: 28,794
Rewards Points: 9,140
Default

Carrier blown 3 amp fuse troubleshoot


That spill switch had no effect on the air flow.

Advertisement

beenthere is offline   Reply With Quote
Old 01-07-2011, 07:24 AM   #3
Newbie
 
Join Date: Jan 2011
Posts: 3
Rewards Points: 10
Default

Carrier blown 3 amp fuse troubleshoot


Quote:
Originally Posted by beenthere View Post
That spill switch had no effect on the air flow.
Do you know what would cause it then?
sportster_16301 is offline   Reply With Quote
Old 01-07-2011, 02:49 PM   #4
An old Tradesmen
 
Join Date: Oct 2008
Location: Somewhere
Posts: 28,794
Rewards Points: 9,140
Default

Carrier blown 3 amp fuse troubleshoot


Could be the board has a short in it.

Check the voltage going to the inducer. See if its surging. or if the inducer itself is having a problem.

Check your other low voltage wiring to see if any connections from the thermostat are loose.

A surging inducer is not a common thing.
beenthere is offline   Reply With Quote
The Following User Says Thank You to beenthere For This Useful Post:
sportster_16301 (01-07-2011)
Old 01-07-2011, 07:14 PM   #5
Newbie
 
Join Date: Jan 2011
Posts: 3
Rewards Points: 10
Default

Carrier blown 3 amp fuse troubleshoot


The problem was a bad gas valve. After disconnecting the leads to it the furnace ran fine but wouldn't light of course so I took the chance and bought a new valve. Presto, it's fixed.
sportster_16301 is offline   Reply With Quote
Reply

Tags
blowing , carrier , fuse , surging , switch


Thread Tools
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
Blown 5 amp fuse on Carrier System chalkstar HVAC 9 07-22-2014 11:18 PM
Carrier Control Board Fuse Blows kdljet HVAC 5 03-11-2009 09:20 PM
Carrier Model 58CTA110 Blown Fuse Jmcoglio HVAC 2 12-29-2008 11:31 AM
Carrier 8000TS Control Bd Fuse blows EAP HVAC 2 08-28-2008 08:07 PM
Blown fuse in Control Panel of Carrier Heater jacksup HVAC 3 02-26-2008 05:02 PM




Top of Page | View New Posts