code 24 on Carrier furnace

sheek · 05-10-2010, 04:55 PM

The error code light on my furnace is 24 which translates to short circuit on one of the wires or fuse is open. I've already replaced the 3amp fuse multiple times and it keeps burning out.....any suggestions??

I really don't want to call a tech and pay them $150 minimum.

**beenthere** · 05-10-2010, 10:21 PM

Look for a short in your low voltage wiring.

sheek · 05-11-2010, 01:12 PM

how do i look for the short? do i have to have a meter?

HvacWiz · 05-11-2010, 01:24 PM

You can start by taking the t-stat wires off the circuit board including the 2 wires that run out to your a/c unit and see if the fuse still blows. that will help you figure out if you have a short in the a/c unit, t-stat or t-stat wiring. and if the fuse still blows you have a short in the furnace itself.

kennzz05 · 05-13-2010, 12:41 AM

perhaps another couple hundred fuses before you get the magic one

sorry couldnt resist

Houston204 · 05-13-2010, 12:48 AM

The condenser is a common location for this low voltage short...

05-10-2010, 04:55 PM	#1
sheek Newbie Join Date: May 2010 Posts: 2	code 24 on Carrier furnace The error code light on my furnace is 24 which translates to short circuit on one of the wires or fuse is open. I've already replaced the 3amp fuse multiple times and it keeps burning out.....any suggestions?? I really don't want to call a tech and pay them $150 minimum.

05-10-2010, 10:21 PM	#2
beenthere An old Tradesmen Join Date: Oct 2008 Location: PA Posts: 19,069	code 24 on Carrier furnace Look for a short in your low voltage wiring.

05-11-2010, 01:12 PM	#3
sheek Newbie Join Date: May 2010 Posts: 2	code 24 on Carrier furnace how do i look for the short? do i have to have a meter?

05-11-2010, 01:24 PM	#4
HvacWiz Member Join Date: Nov 2006 Location: Northwest Ohio Posts: 286	code 24 on Carrier furnace You can start by taking the t-stat wires off the circuit board including the 2 wires that run out to your a/c unit and see if the fuse still blows. that will help you figure out if you have a short in the a/c unit, t-stat or t-stat wiring. and if the fuse still blows you have a short in the furnace itself.

05-13-2010, 12:41 AM	#5
kennzz05 Member Join Date: Nov 2008 Location: palm coast fl Posts: 551	code 24 on Carrier furnace perhaps another couple hundred fuses before you get the magic one sorry couldnt resist

code 24 on Carrier furnace