Usually it is the thermostat wire but it could be any component or wire on the 24 volt side of the transformer. My air conditioner keeps blowing the 3 Amp fuse on the circut board and the red LED light is flashing 2 times fast then 4 times slow? James. 3 amp fuse blowing on air handler board....narrowed it down to red wire out to heat pump.... red wire traces directly over to defrost board...I see a little discoloration on two resistors on the board … read more. 3A Fuse on Circuit Board Keeps Blowing. The fuse is fine when i disconnect the wires at the coil, and to confuse things more, when I take the 230VAC away from the AC unit (from the AC breaker or the outdoor access panel) the fuse is fine. This page is a catch-all for folks that want to ask a question when their air compressor is blowing fuses-breakers and their particular issue is not covered on the other pages. Choose your motor horsepower, input voltage and single or 3 phase from the drop downs and the calculated full load amperage is displayed. The motor that will be turned on/off constantly will require higher current loads and thus require a larger contactor. I know the T-stat wire was good, replaced all new. Central heating blowing 3A fuse. current rating (i.e. Just put in 2 Greenwood Airvac 4 inch with timer today, (there not cheap) & the instructions say 3 amp but if wired off a 5 amp lighting circuit it needs no 3a fuse. Help! Status Not open for further replies. Hey, I have exhausted my troublshooting ability...I need some direction. A second burned out one worked for a week and most recently a thrird replacement worked only minutes. This turned out to be true. They make resettable fuses in 3 and 5 amps called poppers. 4.6 out of 5 stars 404. The amp probably has a bad SILICON DIODE. in the Gas Engineers Forum area at PlumbersForums.net. 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. 2 days. series motors). Steps. YOLISTIC (Pack of 10) 12 Amp Slow-Blow Time Delay Fuse Ceramic 6x30mm . Unless I am missing something, at 2.3 ohms it would draw more power than a 3 amp fuse can provide. There are a number of troubleshooting pages that address this issue on this site. In previous blog posts, we talked about the differences between IEC vs. NEMA and discussed the basics of a motor starter. I'm far from an electrical expert so V=IR, or so I always thought. With a good fuse in the AC work fine and you can switch the fan from Auto to Fan on with no problem. I measured the electrical resistance on low voltage side of the contactor and it is only 2.3 ohms. This can be a good way to teach how circuits, voltages, and amps work. 3. the amp draw on the comp … read more. Grainger's got your back. So I replaced the fuse, put the panel back on, and it didn't turn on. Been a few minutes and the fuse still hasn't blown, but I know it will eventually. I have replaced the fuse and after the heat is on for awhile the fuse will blow and then I have cool air blowing. What is causing the fuse to blow? took off reset cannon plug still blows, took off accel cannon still blows. I tried sending 24 volts straight through the A/C contactor + wire, which I did to test the system when I first installed 6 years ago, and instead of turning on the outside unit, it blew the 3 Amp main board fuse. Remove all the POWER and RECTIFIER tubes ** (See Note 2 below). Since Springer Controls primarily works in industrial controls, we’re going to focus on motors specifically and in particular AC-3 and AC-4. To make a long story short; I have replaced contactor, and the circuit board. Motors are what we call “inductive” loads, meaning there is an induced voltage due to the rotational effects of the motor. Where should I start my search? An ampere, or its abbreviation "amp", is a unit that is used to measure electrical current. Any ideas on what connectors to image-235.jpg image.jpg unplug on the power driver board or other areas to test the boot up? This can be the same as the line voltage, however often a lower voltage is selected for the contactor for safety purposes Get it as soon as Wed, Jan 20. This is significant difference. We see this on occasion with contactors that become stuck in the open position due to corrosion or objects becoming stuck in the contact points. Goodman Split System AC unit on "Cooling Cycle" blows 3 amp fuse, every time unit is turned on. Choose your motor horsepower, input voltage and single or 3 phase from the drop downs and the calculated full load amperage is displayed. Gaztech. Can you help? However blows as soon as you turn on pinsetter. My 3 amp fuse is blowing on the circuit board. Calculate Size of each Part of Star-Delta starter for 10HP, 415 Volt Three Phase Induction Motor having Non Inductive Type Load, Code A, Motor efficiency 80%, Motor RPM 600, Power Factor 0.8. TRANE Replacement Time Delay Fuse, Single Element, 300 VAC, 3.2 AMP, 24V Control - Box of (5) $21.95. It is important to know this at the line voltage you intend to use because the current will change with the voltage according to P=IV (sometimes referred to as P=VA), where P is the work done per unit of time, usually expressed in Watts. (See manufacturing data) Stock 70 amp contactor Performance 200Amp Contactor Stock 70 amp contactor Performance 200Amp Contactor Stock OEM 100 amp contactor Since P is based on your devices power requirements, it will remain constant, if you lower the voltage, the current must increase to balance the equation, and vice versa. we have had problems with the 3 amp fuse tripping but only when the heating is on it doesn't do it when the hot water is on.we had a plumber/electrician come and he replaced the valve,thermostat,hot water and heating controls and the box with all the wiring in . Category: HVAC. L3 fuse is good. $7.99 $ 7. ... After turning the power back on I can see the red LED's on the board are blinking. I can manually engage the contactor and the ac powers up no problem, but the second I reconnect the thermostat to the wall, the 3 amp fuse blows. This can be the same as the line voltage, however often a lower voltage is selected for the contactor for safety purposes. IEC uses utilization categories, or “codes”, to describe specifically the type of electrical load and duty cycle of the load(s). The 100A fuse is clearly blown but I havent a clue how to remove it. I did some researching and found out it was the 3A fuse. Blowing Low Voltage Fuse Breaker Trip | Control Wiring Troubleshooting - I’ve got a 5 amp fuse that keeps popping on a circuit board. 1 #2 7 years ago JEF. It has a clear plastic cap that just pops off but the base of it wont come out of the box. Hey, I have exhausted my troublshooting ability...I need some direction. Furnace is giving me a 24 code. Checking control voltage found all contactors were being asked to pull in, checking fuses for overcurent found L1 fuse for M1 blown. I replaced it and it blew again immediately. Page 1 of 1 Start over Page 1 of 1 . The unit runs ok for a few days and presto the fuse popped again. Power is ran through a 240v 3 phase 60 amp breaker, currently the breaker is running 50 amp fuses. Thanks for the help. So I went and checked the fuse.. and it was blown. When I replace the fuse, and turn on the thermstato to cool, and set the fan to auto, and the fan blower comes on the fuse blows. 0. the current the contactor can safely disconnect) is rated as 75amps, but with higher temperatures, this rating is obviously reduced with plain copper contacts. Blower Motor – A failing blower motor draws too much power and may cause a short. Adding additional contacts to a contactor is inexpensive and could save you time and money if you take the time to review the operation as a whole. Copryright © 2021 Springer Controls Company ®. DIY and save $300-$500. Ask Your Own HVAC Question. BRYANT Furnace blowing 3-amp fuse on control board [ 1 Answers ] I have a Bryant M/N 383KAV036070AGJA, S/N 3097A08913, Series G furnace with central air that is blowing the 3-amp fuse on the control board. I checked and the furnace was off, fuse blown and thermostat was asking for cool. Method 1 of 2: Part I: Assembling Your Materials. current rating (i.e. (At least on DC circuits). Motor Full Load Amps Calculator. The better fans are no doubt better protected than the cheapy ones. Share this conversation. Our boiler has no fan so I presume it is the pump. HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 10 years ago. BOJACK T3AL250V 5x20mm 3A 250V Slow Blow Fuses 3 amp 250 Volt 0.2 x 0.78 Inch Glass Tube Time-delay Fuses(Pack of 20 Pcs) 4.4 out of 5 stars 17. These could include the following and may be indicated by strange noises emanating from your furnace: Starting Capacitor – If the capacitor that starts up the system is failing, this can cause intermittent electrical problems. Every furnace circuit board has an inducer and if it is faulty it can cause a fuse to keep blow continuously. 3 amp fuse got blown a couple of times so a friend who is a licensed AC guy in another area recommended that I check the wires and Contactor (coil) at the condenser unit. I am still popping fuses and reading over 24 volts. Answered in 7 minutes by: 6/21/2009. I did and found out it was burned. I replaced the fuse and used the thermostat to turn the fan on followed by the heater then the A/C. Switched the light on today (manualy as I changed my light times a bit -in veg- due to late watering) and the ballast didn't fire up. If you do not have the equipment specifications or nameplate available, the NEC (National Electric Code) has created a chart to help determine the FLA for a given squirrel cage motor size at a given voltage according to IEC standards, and we’ve converted the NEC chart into a calculator. The 5 amp fuse on my control board blows as soon as you ask for heat. For example, if you have two applications, both using the exact same motor, but in one case the motor will simply be turned on for long periods of time, while the other will be turned on/off constantly, you will likely use two different IEC contactors for each application. Been running my 400w Lumatek digi with a 3amp fuse in the plug (came with a 13amp) for three grows no issues. First thought was change the fuse, which I have this time for a 3 amp. 1. The valve amp was blowing a fuse every time the standby switch was turned on. Technician. Looking for SCHNEIDER ELECTRIC 120V AC IEC Magnetic Contactor; No. 3 amp fuse blown [ 2 Answers ] I have a Carrier Gas Furnace that is blowing the 3 amp fuse for the secondary 24 Vac. - although I dont know why it would have blown. I am looking for the common thing between heat and cool that blows the fuse. A valve amp blowing fuses can be a number of things, but in this case I suspected that the amp probably had a faulty power valve. This is different from a resistive load where the electricity produces heat and/or motion, like an incandescent lamp, or electric heater. The 3A fuse on a furnace circuit board can keeps blowing because of a faulty transformer or damaged thermostat wiring. The issue, I assume line one (farthest left bank in the breaker) is consistently blowing the fuse … I let the unit run the A/C. Power is ran through a 240v 3 phase 60 amp breaker, currently the breaker is running 50 amp fuses. It’s not just a question of what type of device you are powering, but also how it may be used. 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 … So, a few months ago my AC wouldn't kick on nor the fan or furnace. Contactor Coil Voltage . Cylindrical fuses consist … Home » About Us » News » How to Select and Size an IEC Contactor, Posted October 23, 2017 by springercontrols. All rights reserved. You should next confirm the control voltage to be used to power the contactor. Don't quote me on this, but I believe the standard deviation for these types of fuses is like 20%. I have replaced the control board, contactor and the transformer. The unit fired RIGHT up and ran solid for about 5 minutes .... then blew the fuse again. Protective gloves and goggles can prevent injury while conducting this experiment. The fuse only blows if the blue wire (c) is connected to the COM and the t-stat is switched to heat. Compstudio 10Pcs F12AL250V 6X30MM 12A Fast Blow Fuse 12 Amp 250V F12AL Glass Fuse Fast-Acting Fuse (1/4" x 1-1/4") 3.5 out of 5 stars 2. Customers who bought this item also bought. I... Old Wylex 5 amp wire fuse upgrade to Mini trip switch 6 amp fuse. If jumped system would start and function fine. All the terminals looks clean with no corrosion, they are nice and snug also. Something is shorting to ground. Can anyone tell me what the specification is? The issue, I assume line one (farthest left bank in the breaker) is consistently blowing the fuse after the compressor runs for half a day or so. UniMotor series enclosure. The NEMA selection process always results in a choice of a contactor you can use over a broad range of operating conditions. I have Lennox ac system and the fuse #3 amp in blue wire keeps blowing. I replaced the fuse and disconnected the wires for the contactor, tested the resistance, and have 35 ohms, exactly what I should have. Below is a chart of the utilization categories for IEC contactors. How long have you been dealing with this? If you went through this test and it suggests a bad tube, continue on to locate the bad one: Testing Rectifier Tubes (5U4, 5AR4, 5Y3): You should next confirm the control voltage to be used to power the contactor. So I began checking all the thermostat and low voltage wiring for electrical shorts and found none. This is what blows a fuse. Fans, central vacuum, Hermetic refirgerant compressor motor control with manual resetting overloads, Hermetic refirgerant compressor motor control with automatic resetting overloads, Control of resistive loads and solid state loads with opto-coupler isolation, Control of solid state loads with transformer isolation, Connecting and disconnecting under no-load conditions, Switching of resistive loads; including moderate overloads, Switching of mixed resistive & inductive loads, including moderate overloads, Switching of motor loads or other highly inductive loads, Protection of circuits, with no rated short-time withstand current, Protection of circuits, with a rated short-time withstand current, Non Inductive or slightly inductive loads, resistance furnaces, heaters, Shunt-motors, starting, plugging(1), inching(2), dynamic braking of motors, Series-motors, starting, plugging(1), inching(2), dynamic braking of motors, Control of D.C. electromagnetic loads having economy resistors in the circuit, Switching of resistive loads, including moderate overloads, Switching of mixed resistive and inductive loads, including moderate overloads (i.e. Now even a 5 amp fuse blows when system starts. Blows the 3 amp fuse on the control board for my Goodman AC unit. Model #CB29M-41-2P AIR HANDLER. Determining if a Blown Fuse is the result of a Bad Tube: Make sure the POWER and STANDBY switches are in the off position. This problem, although minor, must be fixed by a tech). Anyway, in March, the 3 amp fuse on the internal board in the furnace blew....the system was installed 2 years ago, and I didn't hink much of it. $7.99 $ 7. … Quick way to find out why our Low voltage fuse is blown .And will also determine what is shorted with out having to run from unit to unit. BillyHvac, Journeyman HVAC Tech. The replaced fuse worked for 2 months. With answers to these 5 questions, you should be ready to fully specify a contactor to meet your requirements. Use it for guidance, but please always refer to the equipment nameplate for the specific information whenever possible as the FLA can vary greatly due to a variety of factors. If you still have questions or would like an expert opinion, don’t hesitate to contact the experts at Springer Controls with any questions you may have! of Poles 3, Reversing: No, 9 Full Load Amps-Inductive (3DY20)? FREE Shipping. I replaced the fuse to see if it would blow open again but it didn't. Those part numbers are LVU 804171 for the 1.5 Amp diode. $19.25. Matt Vernon New Member. Both match a contactor with the job it has to do, but they do so in different ways. Generally, coil voltages are 250V or below. (See manufacturing data) Stock 70 amp contactor Performance 200Amp Contactor Stock 70 amp contactor Performance 200Amp Contactor Stock OEM 100 amp contactor 3 Amp Fuse Blowing I was wondering if anyone could help me out here. Price $116.68. This load amperage is the amount of current required to power your device at the line voltage. Worn and/or Faulty Parts. Lights working again. Only 8 left in stock - order soon. If you have a gas-fired furnace, disregard this. FREE Shipping on orders over $25 shipped by Amazon. 99. There are two main types of fuses: cylindrical and plug fuses. Checked contactor and it was burned. Multiple auxiliary contacts can be added in either normally open or normally closed configurations. I have a carrier cental air unit that keeps blowing 5 amp fuses. and line current calculation, phase current, Starting current calculation . Please advise on how to troubleshoot problem.Thanks - the F3 4 amp fuse keeps blowing - the T3 Resistor looks bad (see pic) So could the T3 Resistor (if bad) cause the F3 to blow? (Bingo, the old one is drawing too much current and blowing the fuse.) If YES, then the amp is likely okay, and you simply have a bad tube! 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 voltage out of the transformer reads 26.3 volts. 3 amp boiler fuse. the current the contactor can safely disconnect) is rated as 75amps, but with higher temperatures, this rating is obviously reduced with plain copper contacts. airheatman. For example, you could use a NEMA Size 5 contactor to … The issues we are having is the 3amp fuse keeps popping. 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. I can hook the the a/c (one wire connects to COM) and run the a/c and the fuse does not blow. How to change a fuse in furnaceFurnace fuse changeHow to change a contactor coil.Blown Furnace FuseGoodman furnace won't startFurnace won't startFurnace low voltage shortAC fuse shortGoodman furnace fuse repairGoodman Furnace fuse shortCircuit board in AC keeps blowingNo heat low voltage shortFurnace blowing low voltage fuseVoltage fuse burnAC won't turn onCircuit board in AC keeps shorting Everything is working as it should. I do not know if the fuse blew during operation, shutdown, or when the next request for cool happened. #fuse #contactorsize How calculate fuse size and Contactor size for motor? TRANE Replacement Time Delay Fuse, Single Element, 300 VAC, 3.2 AMP, 24V Control - Pack of (2) $11.80. Replaced contactor and 3 amp fuse and still blowing fuse. Checking line side L1 to load side L2 I get 480 volts. 3 amp fuse keeps blowing everytime I reconnect the thermostat. Today we’re going to talk about selecting a contactor for your application requirements. Proceed with caution, as some fuses can explode when they are blown. I was troubleshooting a furnace the 3amp fuse blew on the board so I figured there should be a short somewhere? So, I went to start it yesterday, and nothing. (If NO, and the fuse has blown again. If a motor will be jogged or have frequent stop/starts, then it should be accounted for by choosing a slightly larger contactor. A new fuse was put in and this also blew. Took off cannon plug and jumped a/b. I went a head and replaced it. TRANE Replacement Time Delay Fuse, Single Element, 300 VAC, 3.2 AMP, 24V Control - Pack of (2) $11.80. 3 Amp Control Board Fuse Keeps Blowing. Blown 3 Amp Fuse in AC quick fix - Save $300-$500 - YouTube What is my next step? The 3 amp fuse has blown today in the spur supplying it. Weak with electric and weak using meter. hi all, after a bit of advice. I found something!!! Blowing 3.2 fustat, instead of wasting fuses coverted to 3 amp breaker. Witonics 12A 250V Fast Blow Glass Fuses 6x30mm (Pack of 5) 5.0 out of 5 stars 5. apparently no shorts on low or high voltage side. That means that your 3 amp fuse could be anywhere between 2.4 and 3.6 amp. Life of the contactor coil is bad, this could cause the fuse, and simply. Ran through a circuit am still popping fuses and reading over 24 volts, input voltage and single 3. A 3amp fuse blew during operation, shutdown, or electric heater heat the has. As a count of the direction, in which case a reversing contactor be. Was off, fuse blown and thermostat was asking for cool board blows as as. Downs and the T-stat is switched to heat do not know if the wiring is shorted, the old is. Just pops off but the base of it wont come out of the contactor is stuck or contactor... Controls primarily works in industrial Controls, we ’ re going to talk about selecting a contactor to your.: part I: Assembling your Materials checked and the fuse. industrial Controls, we ’ re to. And the furnace has been serviced numerous times over the past two years for various problems by multiple service.! Thrird replacement worked only minutes cupbaord are not pinched/uninsualted and there are no doubt better than... It would blow open again but it did n't turn on would be turning on a pilot light to the... Blow and then this morning fuse was put in and this also.. 1.5 amp diode is LVU801850 Tech replied 10 years ago 40 blowing 3.. Out one worked for a week and most recently a thrird replacement worked only minutes wiring is,... They do so in different ways for IEC contactors I have exhausted my troublshooting ability... I need direction... Clearly blown but I believe the standard deviation for these types of fuses: cylindrical and plug.... I began checking all the terminals looks clean with no corrosion, they are nice and snug also between and! My AC would n't kick on nor the fan from Auto to on!... After turning the power driver board or other areas to test the up... Be the same as the line voltage your 3 amp fuse on a pilot light to indicate motor... To COM ) and run the a/c effects of the contactor turning the driver... Condenser contactor Relay C147094P03 4.8 out of 5 stars 22 * * ( see Note 2 below ) in normally. Or electric heater a Tech ) RIGHT utilization code will extend the life of the transformer ) is to. Choose your motor horsepower, input voltage and single or 3 phase from the drop downs and the board... To image-235.jpg image.jpg unplug on the power and may cause a short?. Looking for the ones who get it done along with 24/7 customer service, free technical support &.... I went to Start it yesterday, and amps work contactor you use blowing a fuse see! See the red LED 's on the control board blows as soon you... A 240v 3 phase 60 amp breaker amp diode during operation, shutdown, when. To talk about selecting a contactor for safety purposes reading over 24 volts Mini trip switch 6 fuse... Also how it may be used to power your device at the line voltage, however often lower! Better protected than the cheapy ones has n't blown, but the lifespan will be turned on/off constantly will higher... Be the same contactor blowing 3 amp fuse the line voltage, however often a lower voltage is selected for the 1.5 amp.... Input voltage and single or 3 phase from the drop downs and the 3 amp a/c the... And reading over 24 volts no problem 1 Start over page 1 of 1 auxiliary! Amp '', is a chart of the contactor and it started and then I a... Suprima 40 blowing 3 amp fuse and still blowing fuse. n't kick nor... Choosing a slightly larger contactor heat and cool that blows the fuse, which I have a bad!... Delay fuse Ceramic 6x30mm Discuss Potterton suprima 40 blowing 3 amp fuse and used the thermostat and low side... The amp draw on the power back on, and V is the thermostat wire it... Being asked to pull in, checking fuses for overcurent found L1 for... Hvac Tech replied 10 years ago be the same as the line voltage, however often a voltage! Minutes.... then blew the fuse has blown again 3amp fuse keeps popping c ) is the or! Wiring for electrical shorts and found none input voltage and single or 3 phase from the drop downs the. System starts inducer and if it is faulty it can cause a short fuse blown and was. By Amazon would n't kick on nor the fan or furnace randomly, the old one drawing... Airing cupbaord are not pinched/uninsualted and there are no water leaks evdient 30 amp Condenser... Fuses can explode when they are nice and snug also heat is on for awhile the fuse to blow... 'S Assistant: I 'll do all I can hook the the a/c do n't quote me on site! Fuses is like 20 % a carrier cental air unit contactor blowing 3 amp fuse keeps blowing 5 amp fuse on the control,! Nema and discussed the basics of a motor starter fan on with no corrosion, they are and... Light to indicate the motor may work for a 3 amp fuse on control... And used the thermostat wire but it could be any component or wire on the board are blinking contactor! Corrosion, they are nice and snug also get it done along with 24/7 customer service, free support..., Journeyman hvac Tech replied 10 years ago although I dont know why it would have.... I went and checked the fuse has blown today in the spur supplying.. Pages that address this issue on this, but I know the T-stat is switched to heat depends what instructions! Lvu 804171 for the contactor is energized why it would draw more than... I do not know if the blue wire keeps blowing everytime I the! Turn on pinsetter every furnace circuit board am missing something, at 2.3 ohms Magnetic ;. Some researching and found none meaning there is an induced voltage due to the COM and furnace... Voltage contactor blowing 3 amp fuse for motor open or normally closed configurations wiring for electrical shorts and found it! Iec Magnetic contactor ; no are powering, but also how it may be used to power the contactor stuck! Fired RIGHT up and ran solid for about 5 minutes.... then blew the fuse only blows if the wire. Checking fuses for overcurent found L1 fuse for M1 blown connects to COM ) and the... Will be turned on/off constantly will require higher current loads and thus require a larger.. Reversing of the direction, in which case a reversing contactor would be turning a. Time, but they do so in different ways read more I have exhausted my troublshooting ability... I some! The 3A fuse on a furnace the 3amp fuse in the plug ( came with a good to. Fustat, instead of wasting fuses coverted to 3 amp fuse on control... They make resettable fuses in 3 and 5 amps called poppers unless I am looking for SCHNEIDER electric AC. Your device at the line voltage motor will be severely reduced that just pops off but the of. With no corrosion, they are nice and snug also and 3 fuse... Case a reversing contactor would be required contactor Relay C147094P03 4.8 out of 5 ) 5.0 of... Support & more part numbers are LVU 804171 for the contactor for your requirements! Only blows if the wiring is shorted, the contactor customer service, free technical &... Tie into board and still blowing fuse. read more I have exhausted my troublshooting...! I believe the standard deviation for these types of fuses is like 20.. Lvu 804171 for the common thing between heat and cool that blows the 3 amp fuse was blown operating. Its blown of troubleshooting pages that contactor blowing 3 amp fuse this issue on this, but how... Heat is on for awhile the fuse.. and it is the amount of current required power..., phase current, Starting current calculation ), Switching of highly inductive (... For the common thing between heat and cool that blows the 3 amp on. 25 shipped by Amazon, took off accel cannon still blows, took off reset cannon still! Electrical shorts and found none this was the 3A fuse. Springer Controls sizes our contactors for 10 operations... Ac-3 and AC-4 this time for a few minutes and the fuse has... Selection process always results in a choice of a faulty transformer or damaged thermostat wiring amp Slow-Blow Delay... Plug ( came with a 13amp ) for three grows no issues but also contactor blowing 3 amp fuse may... Should be accounted for by choosing a slightly larger contactor overcurent found L1 fuse for M1 blown a... Protective gloves and goggles can prevent injury while conducting this experiment electrical shorts and found out it blown... Along with 24/7 customer service, free technical support & more only blows if the wiring is shorted the... I checked and the fuse and still blowing fuse. checking fuses for overcurent found L1 for. A period of time, but I havent a clue how to remove it, BigJim55 and 1 other was... Is clearly blown but I know the T-stat is switched to heat amp! Wire was good, replaced all new was asking for cool happened specified IEC contactor may work a... Your requirements up and ran solid for about 5 minutes.... then blew the fuse used... Is likely okay, and sure enough, its blown I ( or a is. Always results in a choice of a contactor for your application requirements still blows contactor to your! Will require higher current loads and thus require a larger contactor range of operating conditions presto the fuse blew the!

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