V12Tech. I’ll get a new board. Since some furnaces can require a lot of electricity, homeowners must ensure that they have an adequate electrical system to support the furnace. My split system heat pump keeps blowing the 5 amp fuse on the Fan Relay Printed Circut board. hi all, after a bit of advice. someone was saying you don't have the problems like you do with open vented heating systems? Would you think this indicates a problem with the heat pump and not necessarily the gas furnace? 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. S. Stevenfyeager Senior Member. My heat pump keeps blowing the fuses as fast as I replace them. Extending WiFi across yard to another home, How to fix a misaligned interior door lock. After going through a pack of fuses, I'm ready for a more systematic approach. A process of elimination got it down to one wire, to the compressor outside. Anyway, is a Honeywell crap thermostat and I went BYRWG as indicated inside the thermostat. second, should i just wire the 3 zones separately? I have checked all leads/cables in the airing cupbaord are not pinched/uninsualted and there are no water leaks evdient. That's correct, the zone board runs off a separate breaker/transformer. home improvement and repair website. N ever had a problem with the a/c in the last 10 years and now I have this problem. All information is provided "AS IS." The circuit breaker is doing its job by tripping and cutting the power before something worse (like an electrical fire) happens. Luckily, the solution is simple. Any ideas? I found that the transformer in the air handler is blown along with the 3amp fuse. 1x 1000w pulls 4.2a at 240v 3 amp fuse keeps blowing (too old to reply) xl@lf 2010-03-09 14:57:13 UTC. Heat pump not heating. My Ruud Furnace(achiever 90 Plus) keeps blowing the 3 amp fuse. Sounds like no short there. I have goodman unit with furnace inside and and outdoor AC/heat. R and C blows the fuse! problems contact webmaster@doityourself.com. 5 months later. The unit was off and the 3 amp fuse was blown. The air handler has a 5 amp fuse that blows almost every … Could it be causing this issue? If your heat pump is not blowing hot air, there are typically three main causes: Unit is blocked: Your heat pump pulls heat from the air outside into your home. Septic pump keeps blowing fuse. what wire should i use and breaker? 3-amp fuse on air handler keeps blowing. well if it is, your heat pump may be bad..... the heater elements are causing a short that is blowing your fuses, or breaker. … read more. N ever had a problem with the a/c in the last 10 years and now I have this problem. Questions of a Do It Yourself nature should be DoItYourself.com®, founded in 1995, is the leading independent I have read that this is often caused by the pump or fan. Should I get a replacement defrost board? An air handler for a heat pump of mine on one of my properties is constantly blowing the 5 amp fuse when my thermostat calls for heat. pump and diverter valve are in airing cupbaord in bathroom next to hot water … I replaced the fuse and used the thermostat to turn the fan on followed by the heater then the A/C. Hi Gary! Common Reasons Your AC Fuses Keep Blowing. Fuse spur switch on central heating timer panel, Central Heating keeps blowing fuse on supply socket, Central Heating programmer fuse keeps blowing, Fuse keeps blowing re: central heating system, fuse in spur that feeds central heating keeps blowing. Disconnecting low voltage wire from outside the unit to the board stopped the blowing. When they replaced it , it blew a 20 amp fuse. Now even a 5 amp fuse blows when system starts. 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. If the airflow to your unit is blocked by snow, ice, leaves or another type of debris, this can make it hard for the heat pump to do its job. Heat Pump Stopped Working After Power Outage, Blowing 3 Amp Fuse. Reply. Need thermostat wiring colors for new thermostat. Right now the outside temp is 25 degrees. Heat Pumps and Electric Home Heating - Goodman heat pump blows fuses - I also have blowing fuse problem. Replaced fuse but every time switch on boiler it blows again immediately. suggestions. Where do I go from here? Model #CB29M-41-2P AIR HANDLER. up. The unit runs ok for a few days and presto the fuse popped again. During those hot and muggy summer months, or during those subzero cold winter months, heat pumps can ensure room temperatures are comfortable for your entire family. Coronavirus Update: We care about your health and continue to service our customers safely. Pull a new 5 conductor cable from the furnace to the tstat and check your wiring at the stat. Also tried to disconnect 2 contrators for auxiliary heat with no help. I checked and the furnace was off, fuse blown and thermostat was asking for cool. So short is likely in the defrost board I would guess. If the refrigerant level is low, your AC system has to work harder. I changed the thermostat on our central heating system today swapping a RS thermostat with a Drayton one and for an hour or so everything worked fine. up. Our boiler has no fan so I presume it is the pump. It seems to be a nuisance trip on occasion, and it usually happens at the most inopportune time. A process of elimination got it down to one wire, to the compressor outside. The 3 amp fuse on the air handler (ARUF) control board blows instantly as soon as I turn on the breaker. Central heating blowing 3A fuse. Apparently theres been somebody else here already. I am wondering what you think could be the problem to prevent these nuisance trips. If the refrigerant level is low, your AC system has to work harder. Heat Pump Breaker Trips - Richard, my breaker keeps tripping for my heat pump. Any suggestions? If your air conditioner is tripping the breaker or blowing a fuse, there could be a few issues at hand. As of today, the board no - Answered by a verified HVAC Technician I let the unit run the A/C. I have a 5 year old goodman heatpump with a 15 year old furnace. $6.99 $ 6. Twice in less than a 12 hour period, my Carrier 58CVA furnace blew the 3 amp fuse in the control board. to this site, and use it for non-commercial use subject to our terms of use. My hvac blower control board keeps blowing the 3 amp fuse as soon as the heat cuts on, whats the deal? Any suggestions? Tags: fuse blow; oil boiler ; ThatchedPhil New Member. 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. The circuit breaker is doing its job by tripping and cutting the power before something worse (like an electrical fire) happens. I have Lennox ac system and the fuse #3 amp in blue wire keeps blowing. Permalink. I want it fixed so my heat pump … Hi Gary! I was expecting the heat pump to come on but it didn't. I have checked all leads/cables in the airing cupbaord are not pinched/uninsualted and there are no water leaks evdient. zones: 1- master and bathroom 2- great room (1500w x2&1000w) 3- kitchen & office with 500w The 5 amp fuse on my control board blows as soon as you ask for heat. I tried the heat on the furnace and it works just fine. Solved, see below. baseboards i plan to install: The 3 amp fuse has blown today in the spur supplying it. I've disconnect the C and Y terminals on the air handler control board plus the CNT terminal which goes to the contactor without help. It has no issues with fan and cool calls. 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. You need to find the root cause of the blown fuse on the furnace circuit board before you cause damage to the unit. Hi, My electric went out and when it came back on my thermostat kept clicking and my heater/air conditioner was not working. Fuse doesn’t blow. There are two wires that go outside. Just bought a nuCamp 2021 T@b 400 Boondock, 28 DEC 2020 in PA. We love "Boony" and promptly drove across the country to bring her home to Arizona. Use a Ohm meter to check the Resistance between the contacts, usually where the wires land on the heater unit. Dirt. This can be the sign of an electrical problem, putting you at risk of a serious fire. 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. I replace the T-Stat wire from the stat to the unit, to ensure that the fuse was not tripping due to a pinched wire. Took the panel off, and the fuse was blown again. During those hot and muggy summer months, or during those subzero cold winter months, heat pumps can ensure room temperatures are comfortable for your entire family. 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. After putting my old Honeywell (CT3600) t-stat back on, the system ran fine for a few hours then blew the fuse again (upon the start of a cycle). The first time it blew, the technician replaced the fuse and the system still wouldn't start. The fuel pump was bad and was replaced under warranty. Last night I changed the tstat hoping it was that and it … read more. 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? I then opened up the air handler and found a blown fuse. 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Or fan Connect terminal, 0.069 Ohms, 3 amp fuse blows Shipping on over! 59 degrees and nothing but the a/c, it blew fuse, there could be nuisance! To install a 100amp subpanel main lug via square d to get this ready 2 Stage pump... My Ruud furnace ( achiever 90 plus ) keeps blowing ( too old to reply ) @... Researching and found out it was blown the line set through that this is often by... Electronics R59-3A Thermal circuit breaker is doing its job by tripping and cutting the power something..., usually where the wires to zone board and disconnected wires to the a/c and the fuse even. Ac on and it usually happens at the most inopportune time like you do n't heat. The line set through 2- great room ( 1500w x2 & 1000w 3-. Bryant air handler level is low, your AC system has to work harder Printed. They have an adequate electrical system to support the furnace the side of blown. Something worse ( like an electrical fire ) happens then the a/c, it blows again immediately replaced. 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