Anyway, is a Honeywell crap thermostat and I went BYRWG as indicated inside the thermostat. A/c keeps blowing a 3 amp fuse on my furnace. Heat Pump Breaker Trips - Richard, my breaker keeps tripping for my heat pump. Heat pumps are electrical units that provide central heating and cooling year round. Just relocated my thermostat and did the bad thing not marking my wires. (, (You must log in or sign up to reply here. Fuse in Air Handler Blowing - Caused by something in Heat Pump. Heat works fine. 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. The condenser will turn the fan off and run just the compressor during defrost if it's real cold outside. I have a Bryant FB4 Heat Pump - the 5amp fuse on the control board keeps blowing at night. I have a 5 year old goodman heatpump with a 15 year old furnace. last guy replaced board already. Solved, see below. The circuit breaker is doing its job by tripping and cutting the power before something worse (like an electrical fire) happens. N ever had a problem with the a/c in the last 10 years and now I have this problem. Furnace fuse keeps blowing? My heat pump keeps blowing the fuses as fast as I replace them. so far i have to install a 100amp subpanel main lug via square d to get this ready. I turned off the input power and attached terminal R (24 VAC power to thermostat) and the fuse blew. 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. The Furnace Fuse Keeps Blowing. Just an update, by disconnecting all the wires from the condenser to the zone board, I can get emergency heat on without blowing the fuse. There are a number of reasons why your air conditioning system keeps blowing a fuse. Hello, I have a Goodman Heat Pump (GSZ14) with Single Stage Heat and Cool plus backup electric auxiliary heat. Copyright© The first time it blew fuse, I gas4you, 6 Mar 2009 #5. drpepperlover. My car has 160000 miles. I have a 4 Ton Performance Series 2 Stage Heat Pump (25HPA648A003) and a FV4CNF005T00 - 4 Ton Bryant Air Handler. If you haven’t been diligent about maintaining your furnace, all its parts will have been silently and … The number of actual blown fuses in this country is becoming fewer and fewer as people continue to have their old fuse boxes replaced by new electrical panels 200-amp service, and circuit breakers. Most of the time when low voltage fuses blow on the control board it is usually caused by a direct short to ground in the thermostat wires. 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. Would you think this indicates a problem with the heat pump and not necessarily the gas furnace? Heat works fine. Blown fuses usually result either from an appliance putting too much strain on the fuse or by an electrical short in the system. up. My car has 160000 miles. I tried the heat on the furnace and it works just fine. It has no issues with fan and cool calls. Been a few minutes and the fuse still hasn't blown, but I know it will eventually. The 3 amp fuse on the board would blow instantly. 3 Amp Fuse to Heating keeps blowing, why?!! Any help would be appreciated. Blows the 3 amp fuse on the control board for my Goodman AC unit. What I did for each wire is look for continuity between the condenser casing and each wire. Is my sub panel grounding correct( with diagram) ? Fan and heater work fine. The fuse only blows if the blue wire (c) is connected to the COM and the t-stat is switched to heat. A process of elimination got it down to one wire, to the compressor outside. This extra effort from your system sometimes causes a trip in your system. ), Help! [ 9 Answers ] My a/c keeps blowing the 3 amp fuse on my furnace. Septic pump keeps blowing fuse. could that even work? We had a power cut recently and boiler (old Potterton oil boiler) went dead and realised fuse inside boiler had blown. Within a 1.5 secs after I push door switch in the 3 amp fuse blows. well if it is, your heat pump may be bad..... the heater elements are causing a short that is blowing your fuses, or breaker. Any suggestions would be appreciated. I have a Honeywell HZ322 zone controller. The installers had drilled a 2" hole through the side of the building through the rim joist to run the line set through. my first question, would it be wise to wire them all to the same breaker even though i am using 3 separate thermostats for 3 zones? When I snap the cover on, the 3-amp fuse in the air handler in the attic blows. First, turn off the heat pump immediately and call a heating repair professional to find the problem. You could try just connecting the R and C connections. If your heat pump is not blowing cool or warm air, or if it is not coming on, check the fuses and reset them, if necessary. It seems to be a nuisance trip on occasion, and it usually happens at the most inopportune time. If the transformer was gone you wouldn't be blowing fuses. However, because many homeowners are not aware of how to fix it, they end up calling service technicians to repair problems that they could’ve fixed themselves. In April I replaced a fuel pump in my S10. So I'm working on a sure comfort Nat gas furnace. Our parting word to you is this: If you’ve never had an electrical inspection done on your house–or haven’t in quite a while–please do so. 60 Pack 3 Amp ATC Fuse Replacement Blade Style Standard Size 3A Fuses with Fuse Puller for Automotive Car Truck Boat. Apparently theres been somebody else here already. I checked that power is reaching both units. December 22, 2019. R and C blows the fuse! Click here and learn how to fix it from the AC pros at Air Experts. In April I replaced a fuel pump in my S10. Or does the thermostat directly control the backup unit? Luckily, the solution is simple. My hvac blower control board keeps blowing the 3 amp fuse as soon as the heat cuts on, whats the deal? I don’t have much knowledge with HVAC but I now know more than the average joe. I have a Goodman split heat pump system, compressor CPLT24-1 and air handler ARUF032-00A-1C. I do not know if the fuse blew during operation, shutdown, or when the next request for cool happened. With a good fuse in the AC work fine and you can switch the fan from Auto to Fan on with no problem. i have attached an image of the plan i have drawn up. 252 satisfied customers. The issues we are having is the 3amp fuse keeps popping. N ever had a problem with the a/c in the last 10 years and now I have this problem. As soon as you request heat the fuse blows and when I try to run the fan to on nothing happens. A/c keeps blowing a 3 amp fuse on my furnace. Last night I changed the tstat hoping it was that and it … read more. It always seem to blow just when we turn the temp. The installer has replaced the two pole switch a couple of times in that time. The fuel pump was bad and was replaced under warranty. 4.8 out of 5 stars 101. I've removed low voltage wires coming from thermostat and ac unit and I've removed the 9 pin connector for the 24 volt circuit within the furnace. Sounds like no short there. As of today, the board no - Answered by a verified HVAC Technician Can you help? Reply. second, should i just wire the 3 zones separately? December 22, 2019. i am stumped. 99. Hi Gary! Disconnecting low voltage wire from outside the unit to the board stopped the blowing. 1995-2018 MH Sub I, LLC dba Internet Brands. However, when I switch to the a/c, it blows the 3 amp fuse immediately. If your air conditioner is tripping the breaker or blowing a fuse, there could be a few issues at hand. We welcome your comments and Well tonight, randomly, the ac shut off. Matt Vernon New Member. Fuse doesnt blow. The 3 amp fuse has blown today in the spur supplying it. I have read that this is often caused by the pump or fan. Hi, My electric went out and when it came back on my thermostat kept clicking and my heater/air conditioner was not working. zones: 1- master and bathroom 2- great room (1500w x2&1000w) 3- kitchen & office with 500w Disconnecting low voltage wire from outside the unit to the board stopped the blowing. So I replaced the fuse, put the panel back on, and it didn't turn on. Last night I changed the tstat hoping it was that and it … read more Is your air conditioner tripping the breaker and blowing a fuse? Send help. gotoman for ac. Any suggestions? I found that the transformer in the air handler is blown along with the 3amp fuse. Unlike other heating systems, they don't generate heat but rather transfer it from one place to another within a home. I tried the heat on the furnace and it works just fine. (homeowner says that last night she put ac on and it started and then this morning fuse was blown. submitted to our "DoItYourself.com Community Forums". This is what I wrote in this post: “If the fuse is blown check all your low voltage wiring to make sure it is not grounding out anywhere. For the last 6 months we've been having to replace the 30 amp fuses outside approx. 3 Amp Control Board Fuse Keeps Blowing. i am trying to do the most efficient wire job for a mother in law suite i am putting in my basement. I have a White Rogers Model 1F86-344 thermostat that I am trying to wire to run my heat pump with reversing valve energized for cool. The 3amp fuse Standard Size 3A fuses with fuse Puller for Automotive car Truck Boat asking for cool.. Switch a couple of times in that time times in that time along. Trips - Richard, my electric went out and when it came back on my control board instantly. 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