Blowing Low Voltage Fuse Breaker Trip | Control Wiring Troubleshooting - I’ve got a 5 amp fuse that keeps popping on a circuit board. So I went and checked the fuse.. and it was blown. Understanding Goodman furnace troubleshooting and 80 percent of the failures can help you with your furnace. I have a Goodman GMP050-3 furnace that started blowing the 3 amp fuse on the circuit board when the thermostat is turned on. (Goodman ARUF48D14AC air handler and VSZ140421AA heat pump) On the chance it was just a bad fuse, I replaced it and it blew again after approximately 3 mins of air handler and condenser operation. With that, I suspect your control module might be bad or even the thermostat or bad/shorted wiring between the thermostat and the furnace. I removed all the wires going to my thermostat and it would not blow the fuse when powered on. When the electrician on site called me earlier he said he was getting 123 to the outlet. Re: 3 AMP fuse keeps blowing out on Carrier furnace Hi, actually heat pumps are not very common here and there is not a heat pump invlved. 3 Amp Control Board Fuse Keeps Blowing. The unit was off and the 3 amp fuse was blown. After a while the A/C turned off. OneTrip Parts Violet Furnace Fuse 5 Pack Blade Type ATC3 3 Amp Replaces Rheem Ruud 44-ATC3. There are a number of reasons why your air conditioning system keeps blowing a fuse. Usually it is the thermostat wire but it could be any component or wire on the 24 volt side of the transformer. 365 day right part guaranteed return policy. I've got an Amana 93HQ furnace, a Goodman CKL36-1L AC unit, and a Robertshaw (unk model) digital thermostat. The first time I discovered the burned fuse and replaced it. Some of the most common problems are: Low refrigerant. 10 Customer Reviews. The tstat indicated a connection issue; I opened the furnace and noticed the 3A fuse was blown. What can I do hvac1000 Posts: 14,540, Reputation: 435. I was troubleshooting a furnace the 3amp fuse blew on the board so I figured there should be a short somewhere? That's first time is blew in ac mode) I have checked voltages, amp of gas valve, shorts to ground, and cannot find any issue. A faulty transformer or a malfunctioning thermostat wire can all be common culprits for fuses that continue to blow. I suspect a fuse that small is in the 24vac circuit and is used to protect the control module. That night the furnace (goodman gmv81155cxa) stopped working. Noticed the 3A Fuse was blown...replaced it and taped down the switch thats on the front of the unit. There was a big black mark in the middle of the 3 amp fuse. I am still popping fuses and reading over 24 volts. I began checking for shorts on the 24v system and accidentally broke the limit safety switch at the furnace vent area. Have found no dead shorts in the wiring, including the AC unit outside. I turned off the input power and attached terminal R (24 VAC power to thermostat) and the fuse … $9.95 $ 9. (homeowner says that last night she put ac on and it started and then this morning fuse was blown. 100 % of customers recommended. I have replaced the thermostat and checked all the wires. Previously only blew when the fan switch was turned ON. I took a look online and someone said to check if the furnace board fuse blew…and it did. Jump to Latest Follow 1 - 5 of 5 Posts. The fuse that is blowing is the 3 amp control board fuse. uxcell Car Blade Fuse 3A 3AMP Auto Fuses Caravan Purple 10 Pcs. Customer Reviews. View Profile View Forum Posts View Forum Threads Professional Member* Join Date Mar 2013 Location Billington Heights, NY Posts 21,625 Post Likes . Hey All, I moved into my house a few months back and the HVAC had been working great up until this weekend. This is the exact type of fuse on my Rheem AC circuit board. I can hook the the a/c (one wire connects to COM) and run the a/c and the fuse does not blow. So, a few months ago my AC wouldn't kick on nor the fan or furnace. furnace model# 58GFA120-LC. This is a split unit with a remote heat pump outside. Help diagnosing AC! To me, a 3 amp fuse is not very big. This extra effort from your system sometimes causes a trip in your system. Now that you know how to identify a blown fuse, you will need to replace it. Before you call in the professionals, you might have some of the more common issues that will be easy for you to work on yourself. It has no pilot light, and the thermostat is blank. I did some researching and found out it was the 3A fuse. The furnace is horizontal Goodman and is located in the attic. 2 days ago it began blowing fuses again, sometimes it would run for a little before blowing the fuse but never more than a few hours. It is a Goodman furnace. Find Goodman Fuse, Thermal Fuse & Breaker Parts at RepairClinic.com. Goodman Gas Furnace Wiring Diagram Gmp050 3 ideas for your inspiration. The power was off for several hours. I checked and the furnace was off, fuse blown and thermostat was asking for cool. I checked the control board fuse, and it was blown. Everything was working fine until I heard the A/C come on and heard a pop. I replaced it and a half hour later it blew again. Why did this happen? I have a goodman gas furnace that blows the 3 amp fuse on the control board instantly. Its a 1994 Sierra 32' TT with the original Suburban SF series furnace. It is designed to protect the system from a potential short or overload. Last summer I had replaced the fan motor, compositor on the condenser. 3 Amp Fuse Blowing I was wondering if anyone could help me out here. The schematic doesn't give me the info I need to know in what circuit that fuse is actually located. Jim 1994 Sierra by Cobra 32' 2016 GMC Sierra 1500 Crew 4wd All-Terrain 2004 Chevy Avalanche 1500 Z71 2002 Triton SL8 1994 Triton Elite 14-98 2015 Polaris Sportsman 1000XP EPS … So I replaced the fuse, put the panel back on, and it didn't turn on. Why You Might Need Goodman Furnace Troubleshooting. 19. Fast, same day shipping. FREE Shipping on orders over $25 shipped by Amazon . I live in California in an area that doesn't really need A/C so all I have is a gas furnace for heat (York Diamond 80). AC: Goodman CLT36-1B (approx. The voltage out of the transformer reads 26.3 volts. Every time it gets replaced it blows once turned on. I replaced the fuse and used the thermostat to turn the fan on followed by the heater then the A/C. Heat worked fine last winter and never used the unit at all from about June to October and then when I tried turning it on in October got nothing. $9.95 $ 9. 3 Amp fuse keeps blowing. The whole system shuts off after a night of use. So I replaced the whole run from thermo down to furnace. I have a blown fuse on the control board. 248 Posts . I do not know what else they may have done, as I was at … 4.7 out of 5 stars 23. I have a furnace/coil that for the past 3 years has been blowing the 3 amp fuse on the board 2-3 times an entire heating season. They make resettable fuses in 3 and 5 amps called poppers. Get it as soon as Thu, Dec 24. Yesterday, I walked by my ecobee and noticed that it had no power to it. Can you help? We moved into our new house on Friday. I need help. Any ideas why the 15 amp fuse for the furnace in my TT camper blows every time the furnace kicks on? When I was first wiring the PEK from the Ecobee3, I did notice there was only one "G" wire to control the furnace fan which I found very odd. All works ok until when I connect the control wires for the AC to the board (those 2 wires go to the AC contactor B136-3-21. My furnace is a Concord model CG90UB. It's a goodman furnace. Already changed out the 120 to 24v transformer. And what about the pilot light? Even a need for a part shouldn’t discourage you because almost anyone can figure out some … After another days use the same thing has happened. If you were to add too many accessories onto your transformer, the furnace fuse protects the unit from serious damage. Now the fuse blows whenever a/c or heat is selected (and temp adjusted). I was blowing the 5 Amp fuse on the control board for my forced air gas furnace. I took off all the wires of the dummy board and jumped out r & W furnace turned on fine but as soon as I put on the wires for the condensor on Y & C fuse blew again I checked the 2wire running … I just had a newer a/c installed and it continuously runs even when the thermostat is turned … No power between R and C (Com) on my control board. $6.19 $ 6. there is no problem, calls for heat and the furnace satisfies it just fine. Get it as soon as Thu, Dec 24. If the refrigerant level is low, your AC system has to work harder. Answers. Discussion Starter • #1 • Jan 7, 2011. I let the unit run the A/C. HVAC_Marc. Overall Ratings. All are about 2-3 years old. Carrier blown 3 amp fuse troubleshoot. $4.19 $ 4. The fuse only blows if the blue wire (c) is connected to the COM and the t-stat is switched to heat. Several days ago, we lost power to my house during an electrical storm. They can come loose over time due to the natural vibrations of the unit, so make sure to check the connections. I have a Goodman furnace/AC unit that went out a few days ago. How to Replace a Blown Fuse on a Furnace. After reading some other posts, I … It has a 3 amp fuse in it. Arrives before Christmas. It works fine except: When leaving the thermostat at a constant temp. The fuses on the furnace tend to be relatively low voltage, ranging from three to five amps. We have a 1993 Goodman 92% gas furnace (no central air). Checked it and the 3 amp fuse in the control board area was blown. 95. the fuse only blows because the load … When the furnace went out, I checked the circuit board and noticed I was getting code #24; "secondary voltage fuse is open - check for - short circuit in secoundary voltage wiring (24 VAC) wiring". So far, I've used a multimeter to test the 24V transformer, AC unit capacitor and conductor; they are all good. Eventually, the utility company replaced the (ancient) transformer and restored power. 01-25-2017, 11:53 PM #8. … It is very simple to replace a fuse wire in a furnace. FREE Shipping on orders over $25 shipped by Amazon. $1.81 shipping. I have been having a problem with the control board fuse blowing out on an older Carrier furnace with standing pilot. I ended up replacing the thermostat and wires as well and now the AC side works perfect but when it is changed to heat it blows the 3 amp low volt fuse and heat will not work. 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