Question about Goodman GMS90703BXA Heater

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Fuse Blows when diagramed wiring is used on GMP125-5

I use 3A and 5A fuses. Wired everything just as it is in the service manual and it blows a fuse almost everytime. I've tried variations of grounding...I know the unit is good, but am baffled. Was able to get it to run the cooling system but it wound up bypassing the heating system. it's almost like it's telling me "you can only have one or the other bubba!"

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I would check your thermastat wiring if you blow the fuse you have a dead short those fuses are saving you alot of money. remove all wires from terminals for t stat on furnance and jump between r and w if it works your problem is in wiring ..........

Posted on Feb 26, 2009

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2 Answers

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Because there is a fault in the unit, time to get it repaired assuming that is the correct size of fuse.

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Coleman Furnace DGAA077BDTB fuse blows when hot is connected


This can be caused be either a short in the wiring, loose connection on the board,or a low voltage connection not secure on the board. Check all connections to make sure they are tight and secure. Let me know what you find.

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1993 Goodman gas furnace keeps blowing fuse when first turned on


You can take each thermostat wire off the control board and use a ohm meter and test to ground, should not have any resistance. Another way is turn off power take each wire off the board, then place one wire at back on the control board terminals ome at a time, untill the one you get to the one that blows the fuse. If the wires check out good sometimes the thermostat itself can have a internal short and cause the fuse to blow.

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1 Answer

Wiring diagrams for 1998 vw passat


Go to Autozone.com and register your car for free. You can then look at Diagrams and your Fusebox layout. You can print the results or use a magnify feature to enlarge what you need. If you do not have a printer, use the one at a Library.

Jan 29, 2012 | Heaters

1 Answer

I have an allpro heater pk55 it keeps taking out the igniter after little use then blows the fuse it burns it up


Your heater draws the current more than normal causing your fuse to blown. Check the current draws of your heater by using AM meter then compare to your manual. Apparently the problem is on your heater elements. It may deteriorated over time. Please replace the heaters elements and get it serviced.

Jan 17, 2011 | Heaters

1 Answer

Fuse blow each time I turn on air check for


disconnect the thernostat wires from the control board. Put a jumper wire between R & G put door back on and turn on power. Blower motor
should run, if it blows the fuse then you have a direct short between R &
G at the board. Do this with R and W(heat) and R & Y(cool).

By disconnecting the thermostat wires and reinserting them make sure that they do not touch when inserted into each terminal. If it still blows
that little 3amp fuse when jumpering between each sequence as mentioned above, then I think your board is bad. When Jumpering out the Y terminal you will have to have the AC wires still hooked up. If it
blows the fuse in that sequence. Disconnect the wires out at the condensor.

You mat have a bad contactor at the outdoor unit.

Jul 16, 2010 | Goodman GMS90703BXA Heater

1 Answer

Fault 14 on rinnai energysaver 556ftr


Hi.

Error code 14 is Overheating error.

The error can be caused by the high limit sensing overheating and cutting off. In that case the thermal fuse may not blow. The high limit can be reset tripping circuit breaker and allowing the unit to cool down with power off.

If that does not work , then the thermo fuse has blown

In fact tis unit has a thermo fuse. (refer to manual).The thermal fuse can be tested reading continuity. If thermal fuse has blown, then replace the the thermo fuse. If the thermo fuse blows again, then there is a condition causing overheating. b260351.gif

Here Full service manual.


Unless you are a trained technician call Rinnai support ringing the number in the manual. Some of testing and repair operations described are not suitable for the home user.

Regards.

Ginko.

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1 Answer

Goodman unit blows 45 amp fuses only in heat mode, worked fine all summer on a/c. It works well for some time then blows them again.


Check the breakers on the unit How many KW--electric heat? Check to see if you have the right wires wired up to the correct breaker cause some units have 40---and ---60 ---amps breakers and your thickest wire could be wired to the 40-amp breakers,, (some 5 KW pullls 19-23 amps respectably some breakers have 7.5 KW heat stips and pulls more and if the wire size can,t cary the amps, then all you have to do is reduce a heat strip.

Dec 18, 2009 | Goodman GMS90703BXA Heater

1 Answer

GDS80904BXBC WILL FIRE FOR A FEW SECONDS AND THEN FUSE BLOWS


if it is the fuse on the furnace board,disconnect all low voltage wires to r-g-w-y-c.make sure you label where they go.jump out red to white if unit comes on and runs,chances are you have a bad t-stat wire or tstat.

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3 Answers

3amp fuse keeps burning out


Hi,

when a fuse blows, its telling you that theres a fault. this could be a loose or broken wire.
or alternatively, the fuse rating is too low. you could check the wires are tight. and also possibly try fitting a 5 amp fuse. check first that the fuse is rated correctly for the appliance. usually 3-5 or 13 Amps.

Mike @ compurepair.

Nov 17, 2008 | Goodman GMS90703BXA Heater

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