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View Full Version : Fuse keeps blowin out no heat


romdog55
Jan 2, 2009, 04:17 PM
6 year old goodman
Forced air
Slit system

I hear heat click over on thermostat but nothing starts up 1 the fuse is blown

2 no red light on in the furnace indication powerTry to replace fuse keeps blowin outnotnot really handy on tight budget what am I up against money wise if I get someone to fix ?

hvac1000
Jan 2, 2009, 04:38 PM
Without knowing where the short circuit is it is impossible to tell how much the labor and parts will be. To get a more accurate estimate I suggest you contact a local repair shop for a estimate.

KC13
Jan 2, 2009, 04:41 PM
What fuse is blowing? Is it a power supply fuse, or a small automotive-type fuse on the circuit board?

romdog55
Jan 2, 2009, 04:55 PM
Automotive fuse kc hvac1000 short circuit would be inside heating unit itself ?

KC13
Jan 2, 2009, 05:00 PM
This will require some trial-and-error without a multimeter. How many extra fuses do you have?:o

romdog55
Jan 2, 2009, 05:04 PM
Soon as I put fuse in blows right away, other day flathead screwdriver kicked it on when I put it where fuse went but not today

romdog55
Jan 2, 2009, 05:06 PM
4 more fuses

KC13
Jan 2, 2009, 05:08 PM
If you see a square multi-pin connector plug near the center of the circuit board, disconnect it and then try another fuse. Does it still blow with connector unplugged?

romdog55
Jan 2, 2009, 05:22 PM
I'm sorry I don't see a multi pin connector in center of circuit board ?

hvac1000
Jan 2, 2009, 05:26 PM
First start by eliminating the thermostat from the equasion. Label and disconnect all thermostat wiring on the inside of the furnace. The labeling is important because once fixed you will need to hook them back up.

With the wires disconnected replace the fuse and repower the furnace. If the fuse still blows post back for further instructions.

letmetellu
Jan 2, 2009, 07:58 PM
Had you done some kind of work on the furnace and if so was the unit working before you worked on it.

If so let me know what you did and I will try to help you.

KC13
Jan 2, 2009, 08:33 PM
Maybe he gave up...

romdog55
Jan 2, 2009, 10:02 PM
Sorry I'm not capable of disconnecting thermo wires in furnace fraid to scrrew it up I had the
Transformer changed and heat worked for 3 days then it blew fuse and crapped out ?

KC13
Jan 2, 2009, 10:25 PM
Unfortunately, professional service may be unavoidable unless you are satisfied to keep feeding parts to the machine. Sometimes, the sooner you bite the bullet, the fewer the teeth you break.

wmproop
Jan 3, 2009, 12:54 AM
6 year old goodman
forced air
slit system

I hear heat click over on thermostat but nothing starts up 1 the fuse is blown

2 no red light on in the furnace indication powerTry to replace fuse keeps blowin outnotnot really handy on tight budget what am i up against money wise if i get someone to fix ?

I had a shorted out contacter do this once,, like to never found it,disconnect all the wiring to heat pump,, low and high voltage see if it continues to blow furnace fuse

MarkwithaK
Jan 3, 2009, 10:53 AM
I had a similar problem with a couple of Goodman condensing units. The coil on the contacter shorted and blew the mini fuse.

Not sure if romdog realizes we are HVAC/R professionals lol.

romdog55
Jan 3, 2009, 11:26 AM
I'm sorry mark I appreciate your help do u know what repair would cost

wmproop
Jan 3, 2009, 11:40 AM
Cost of a service call plus 30 --40 bucks,, maybe

MarkwithaK
Jan 3, 2009, 12:00 PM
im sorry mark i appreciate your help do u know what repair would cost

It's way too difficult to pin down a price and to honest it would be unfair to both yourself and your service company. I do not like to give out numbers in a forum like this unless it is obvious someone is getting ripped off. In fact, other similar forums do not allow it at all. Bottom line is that we do not know for certain that this is your problem since you are not willing to do what was suggested. It could be something else all together.