Most Goodman furnace parts are warranted for at least 5 years and your furnace since it is a 95% furnace might be 10 years. Steve. I remember I had trouble where I installed too small of pipe (2″) and I had to go back free of charge and replace the 2″ pipe with 3″. Test between the G and C (com) terminals you should have 24 to 28 volts AC between these two terminals. Could this be because my evap coil is on the second story and the condenser is at ground level? Please make sure you check the blower motor capacitor to make sure it is in good shape. I would start with the float switch, the door switch on the furnace blower door, the air handler or furnace control board testing between R and C (should have 24 to 28 volts AC). Hi, I recently had a Rheem direct vent furnace installed with 2″ PVC with an approx 30′ run to exterior. I have a AC overhaul being done at my house today – not there so the repair guy relayed a message to my daughter. Duct work is in crawl space. The gauges will show whether the unit is low on charge, has a bad valve and whether or not the compressor is working properly. I hope you have a nice day and weekend! We have a post with YouTube videos on thermostat wiring that might help you out, but you probably already know this: https://arnoldservice.com/problem-i-purchased-a-new-programmable-thermostat-my-thermostat-wiring-only-has-only-three-wires-the-thermostat-instructions-call-for-a-red-power-wire-a-yellow-green-and-white-wire-my-three-wire/ You or a tech would need to troubleshoot and study how they have your unit wired and figure out what they did wrong in the wiring. rating of your outdoor unit. I hope you can easily find and fix the problem. It wasn’t a matter of ‘IF’ this would ever cause a problem, but ‘WHEN’.”, I’m not a heat pump person. Thanks for sharing your information about fixing your propane fireplace! Steve. Test the controls to make sure they are staying closed when the furnace shuts off after the 3 minutes. Help! That is about all the advice I can think of if they can not make the access hole any larger. I am sorry, but I do not have a Lennox parts program where I can look up parts. My question is what can cause the unit to vibrate and at times excessive vibration? I changed the run capacitor and added a hard start to it thinking this is what was needed. I hope that maybe someone who reads this might have an answer. Our Carrier parts program shows a compressor part number SRD480HC scroll compressor. All Good. If they are good, I think this would lead to the board. They are probably concerned over their health and would rather come back in the morning when the attic is cooler. If you are not getting 24 volts between R & C then you must have a transformer problem or a blown low voltage fuse on the board. I paid one of them to change the transformer on the furnace to 24 volt. We have several different free HVAC general practice tests complete with questions and answers. Steve Arnold. We have a troubleshooting question and answer page which has many questions with YouTube troubleshooting videos on the following page: https://arnoldservice.com/air-conditioning-heat-pump-troubleshooting-questions-answers-index/ I hope you can find and fix this problem easily. The pressure slowly backs down below 300 in about a min. So I would need the heater model number to look up the parts. If the fan is getting the 220 volts and cutting off then you either need a new fan motor or capacitor. Hi Ms. Weaver! This most certainly sounds like an air flow problem or a problem where the company did not install a large enough units. We discuss this problem on the following page: https://arnoldservice.com/problem-your-fan-on-your-furnace-runs-all-the-time-and-will-not-shut-off/ I hope this helps you find and fix the problem. Steve. I hope someone will see your question and advise. The current decibel reading when running 70-78. Otherwise, they have good reviews, but it sounds really weird and temporary to me. Hi Deon! There is no hole next to the vent screw on the replacement and I couldn’t find any hole to screw the adapter into for the flex hose. I would suggest making sure all connections are good and tight. I cut the thermostat down, the system cut off. Thanks, Steve. Hi, My air conditioning unit failed at the end of summer. please, check if you have a condensate overflow switch on the unit. That is why I changed the that switch but since I did only the blower is coming on. Hi– I have a riello 50 f5 burner. Then I had the ceiling filters cleaned out. The old one was a 2 zone system with upstairs and downstairs being controlled individually. I believe the board is possibly bad. Thoughts? The compressor thermal over-load has just so many resets and then you will need a new compressor or a new unit. Hi Mr. Thorn! Sorry you are having air conditioning problems after getting two new systems! Now if I go outside to the outside unit and pull the breaker out to cut off all power to the outside unit and then turn the thermostat back on to cool setting after replacing 5 amp fuse, the furnace stays on and doesn’t blow the fuse. Learn. You should be able to find a coil replacement given the measurements of the old coil and the BTU. I believe that the other HVAC components can’t fully be tested/measured until the control board is once again functional. I am sorry that I can not help you out. This should not have anything to do with the high voltage side on your unit such as the capacitor. Blowing a fuse on the control board shows that there is a short to ground somewhere in the system. Hope you have a great day! Yes, The blower wheel could be dirty or off balance and cause a rumbling sound. If the blower motor does not start then you have a thermostat wire problem. The low voltage transformer on your furnace should be directly connected to the control board through the R and C (com) terminals. If it were me I would suggest keeping an ignitor and flame sensor the least expensive parts. I hope you can easily find and fix the problem. I have been told that a compressor is matched to the condenser and the evaporator coil and that the compressor should be replaced with a Carrier authorized part or the system may not perform as expected. Steve. Sorry you are having this problem on this hot day! It is very hard on the compressor to run without enough refrigerate because a low on charge system will allow the compressor to over-heat, melt the compressor motor windings and burn the compressor up over time. Please click here to see the SPP6 compressor hard start booster, Thought you’d be interested. I hope you have a blessed Memorial Day Weekend! In the meantime, I’m going to look at the video link you sent. Created by. It is code here in Louisville, KY. to have a heat gain and heat loss calculation submitted to the housing department before they will issue a permit. On our furnace the control board and draft inducer are real expensive over $250 each. Troubleshooting type questions would also be appreciated. It is a $10,000.00 fine if EPA catches a person releasing the refrigerant into the atmosphere because this is so detrimental to the environment. Slugging the compressor out with liquid refrigerant is not what you ever want because the compressor is made to pump a gas and not a liquid. Thanks for asking the question! can I jump the sequencer to test it,? Of course it is hot today (Sunday)!! AC man came out today and talked to my wife, he claims we lose power to the furnace because the outside unit overheats. This sounds like a thermostat problem or a blower motor problem. If the refrigerant is good then many times the technician will receive money for the refrigerant. I will get 27volts when testing the following with the probes: R and G, R and O, R and Y. Check to see if you are getting 110 to 125 volts AC to the blower motor when the thermostat is calling for cooling. It would depend on what the installations instructions are for your Rheem furnace say. Any help solving this would be GREATLY appreciated! I had a capacitor replaced for each of my Air Conditioning units. I hope you can get this company to take care of your problems. I just can’t imagine using wood instead of concrete block. You might look at Angie’s list in the reviews and see who other people liked in your area that do AC work. Home; HVAC Basics. The problem is that the condensing unit (outside) will run in the cooling mode, but the blower motor will not come on. Indoor coil (evaporator coil) freeze ups are caused most of the time by a low refrigerant charge. I’m just trying to get by until I have a gas line installed in a couple of months. HVAC School, Free Online HVAC Training, air conditioning training, heating training, refrigeration training Use our online practice test to help you study for the general knowledge HVAC certification exams. Do take this quiz and see what you know about heating and air-conditioning When I installed my own furnace and AC at my home I paid to get a permit so there will be no questions asked when I want to sell our home in the future. Steve Arnold, On a RUDD heatpump with the entire unit on the outside. Hi Mr. Longmire! HVAC Technician Behavioral Interview Questions You should also be prepared to answer what are called “behavioral” or situational job interview questions. 6 HVAC Interview Questions You Should Know How to Answer By My Service Depot on Thursday, May 28, 2020 Whether you're the interviewer or the interviewee, you need to come prepared to your next HVAC job interview. I would suggest that you have your heat pump unit tested to make sure it has the right amount of refrigerant. Hope you have a great day! This list is not exhaustive and will be added from time to time. Relative humidity refers to: A: The amount of moisture in the air. }); Match. I left aside and forgot to tell my wife. Is this acceptable? I have also used volt meter down at the furnace C&R (matching the thermastat) and it also shows 27V going to 0, and then 60 seconds later everything comes back. It doesn’t do it all the time though. If you do not have the dip switches then I do not know what to tell you. Any loose connections can cause arcing and excessive heat. Click here: Troubleshooting Heating Problems, Propane furnace not working when temperature got down below freezing. You should be getting 24 volts AC between these two terminals (R&C) when the furnace power switch is turned on and the blower door safety switch is depressed. Most of the time shorts in thermostat wires occur near the outside unit where the wires are exposed to sun and animals that can chew through the wires. Even with that the volt reads 27,28. To get the furnace to work with the new control board simply reverse two wires when connecting them to the new control board. One of my suppliers said there was a recall on the TXV valves and after replacing the valve the manufacture was recommending the AC Renew product to prevent it from happening again. Since the unit is having trouble starting I would suggest that you make sure that the run capacitor for the compressor is in good shape and not weak. It’s 3.5 ton and services a quad-level home. This can be dangerous since you are working with live electricity high voltage. I am very sorry that I can not give you any advice on this. You should be able to stop and start you air conditioner when ever you want. This customer had installed a new 3 wire pilot burner, then decided to clean the old 3 wire pilot burner to see if he could get it working. Hvac 3rd visit different tech.The loud rattle noise was noticable tech determined it was the gas line. You must sign in or sign up to start the quiz. I have a goodman ac/heating unit 13 seer gsx-gmh 5 ton installed 2012. I hope you can get this fixed. NOT sure) Not a constant on and off. I would suggest that you call your HVAC contractor back out and have them find out where the problem is and fix it. and the coil can then be squeezed together some to make it fit through the attic access. She touched the prongs not knowing. Most heat pumps energize the reversing valve in the cooling mode. Choose from 500 different sets of hvac 101 flashcards on Quizlet. Please make sure the motor capacitor is the right size and is in good shape. I would ask your contractor to look for an air handler that can be disassembled in pieces then reassembled in the attic. If the compressor is hot on the top then you might be low on refrigerant charge. I am thinking I may have to put in a relay with a separate voltage source to fan motor but would prefer to use existing control system. Therefore, what else could have been compromised on the unit and could there be other integrity issues to consider on my 11 year old HVAC unit. I hope you have a nice day! Heat Transfer Quiz Questions ; Ozone Layer Depletion Quiz ... Condenser Basics Quiz Questions; Boiler Basics Quiz; HVAC Heating Basics Test 1; HVAC Heating Basics Test 2; Cooling Towers Quiz Questions; Cooling Towers Quiz Questions 2; they look at other spaces in the attic but determined that there was no other spot that they would be able to cut open a hole large enough to get it in the attic. Thanks for asking this important question! New clean filters. I hope this helps you finding and fixing the problem. If the cool air has stopped flowing, the first thing you … The fan on the unit wasn’t running. Most of the time the sequencers are used to energize heating elements and to start the blower motor, but not connected to the contactor in anyway. I would suggest making sure all connections to the board are good and tight. If you aren’t getting 24 volts between G and C then you probably have a thermostat or a thermostat wire problem. Steve. Then wait for at least three more hours after the power has been restored before turning the thermostat back on. Check to see if the blower wheel spins freely. Fan off; Burner on; Fan on; Burner off; Pilot on; Fan off; etc. If the outdoor unit has already been removed and there is no refrigerant in the system, then you would not need to call in a technician to remove the refrigerant. Steve, I have a rheem gas furnace/AC unit . If your electric furnace or heat pump is not having any heat come out of the registers it is probably a sequencer, control board or limit that has gone out. Steve. Thanks Arnold. I hope you have a nice day and weekend! Thanks again for your question. Test with a volt meter set to volts AC. If the compressor does not start working right again then you will need a new compressor. I would suggest that you use a volt meter and test with the thermostat set to call for cooling between the C (com) and Y (yellow) connections on your thermostat. Steve & Barbara Arnold, Please click here to see the transformers we sell. Your problem sounds like you have an air conditioner that is either over-charged or you have a restriction in the refrigeration system that is causing it to go off on high head pressure. Hi Robert! After the unit runs for 10 to 15 minutes the line should feel like a cold coke can right out of the refrigerator. Now it’s cold, so in the meantime I’m wondering if it’s safe to run the heater. If it was my home I would prefer a concrete pad just because of the looks. The hole on the cone looked a little stopped up. lenny_labita. If the voltage goes down below 110 volts then you will need to increase the output of your generator, use a larger power cord (10 guage) or you might need a new contactor. What could be the problem? the Tech guy gave me the old ones and told me not to touch the prongs. Those wires then tie into the defrost control board. Great Question! Then you know there is your problem, clean/unclog the condensate drain line, place the switch back on the T fitting and “magic” !! Steve. The level of the water should no be higher than the center of the T otherwise the switch activates and shuts down your AC. Inside and outside ciols aren’t clogged. Thankfully, no fire. This sounds like your compressor is probably over-heating and going off on internal thermal over-load protection. I personally would always want an OEM compressor made by the manufacturer. On the high voltage side the compressor and fan motor. I hope you can get it fixed soon! I would suggest that you test between the yellow wire and C (com) with a meter set to “volts AC” with the thermostat calling for heating or cooling. Problem 4. Taking the fan motor option I ran water from a hose over the top of the unit onto the motor to see if that kept it from overheating and tripping it’s over-temp circuit. It performs fine when it runs, temp differential is 17 degrees f. Hi Cameron! If not you might have a low voltage transformer that is out or a blown fuse. I hope you can easily find and fix the problem. Hi Richard! Maybe one of the relays inside the thermostat are arcing and causing the high battery draw. This insures you get the right sized equipment installed. If you aren’t getting 24 volts between these two terminals then you might have a thermostat problem or a thermostat wire problem. Please let me know what you advise as I desire to get my AC back on soon. Steve. Many times when this happens homeowners of heat pumps will hear loud noises and see hot smoke from the melting of the ice coming off their outdoor units. Please make sure all thermostat wires are good and tight because a loose wire can cause high amp draw and run your batteries down. But, I’m not getting 24 volts coming out of the board which is not providing 24 volts to the contractor. Freon group of refrigerants are (A) Inflammable (B) … The AC is rather new. Please make sure the batteries in the thermostat are in good shape. I know exactly what you are talking about on the warning not to turn your air conditioner on for 3 hours after the power has been off for more than 3 hours. If you wife did not feel an electrical shock then the capacitor must have been discharged and there is nothing to worry about. Could the igniter be showing within range and still be problematic. The control box was off, so that is ok. (3) Y (yellow) wire going to the contactor of the outdoor heat pump unit. I am sorry that I do not know the answer to your questions. Hi Ms. Marino! Sometimes it is easier just to replace the thermostat wires. My home warranty company has determined that the compressor in my Carrier condenser (4-ton, model 38TKB048350, built in 2003) has burned up and needs to be replaced. It sounds like the company that you are having is not doing a good job. Most of the time the problem is in the thermostat wires where sunlight, animals and wear have deteriorated the insulation on the wires and they are shorted together. Thanks so much for your question. If it doesn’t then you are low on charge and need to get a technician to find the leak and charge it up as quick as possible. Our local gas supplier came out and told us that the left 2 burners, the 2 furthest from the glow bar are not staying on after ignition flames coming out of burner chamber. If it is a bad compressor you should be able to purchase a new R22 compressor and have it installed. The outside fan works great. Test. Also, is it possible that the capacitor has been deteriorating and finally just blew? Weak capacitors are a leading cause of fan motor and compressor failure. I really appreciate the rapid response! If you aren’t getting 24 volts between G and C then you might have a thermostat problem. What can I do to ensure the unit stop burning the contactors. Thanks so much for asking this great question. Steve. Appreciate the quick response too! The most common cause most of the time is because the system is low on refrigerant charge. Please let me know. I can not find a Lennox parts supplier here in Louisville, KY. where I can call for information and purchase parts. [Note: I wish there was a way I could upload photos because they all took photos, so I have some good ones]. I find that if I take the control box off, jump connections 5-6 and manually get the motor started, then I can have a hot shower and some heat in the house. I suddenly heard it running loud tonight. Hi Mr. Goodwin! Steve. Air Conditioning Quiz Questions Answers 5 ) Search for: Related Pages. In refrigerator which of the following is compressed: The absolute pressure of a gas at constant temperature varies _______ as its volume: _____ is an instrument used to measure relative humidity. Sometimes the temperature can be over 130 degrees without an attic fan. catch (error) {} They are phasing out R22 units so you will need to replace both the outdoor unit and the evaporator coil with new equipment using the new refrigerant R-410A. I hope you have a blessed day! Steve. I have a 93% efficient furnace but when changing a breaker the return wire became caught against a 20amp hot line. I read through the problems and didn’t see anything resembling mine. I hope you can easily find the problem. I would suggest turning off the power to the furnace and taking a mirror so you can inspect the blower wheel to make sure something has not been sucked up into it. Another source states that to evacuate the refrigerant the unit should be running. We turn the unit off for HOURS and then it will work fine for a day or two and do it again. So the thermostat is working ok. Is the fan always supposed to run when the motor is running? Steve. If the motor is pretty hot you might have a blower motor problem (might need a new motor) or the motor might need a new run capacitor. Hi Byron! If you tie all these wires together and nothing works then sounds like an electrical problem (maybe thermostat wires) or yes, it could be the control board. My A/C unit is a year old. This year it started to behave strangely: when the temp is set to higher end (73+) when it reaches 73 the power to thermostat drops to 0 for 60 seconds. Steve. We cleaned the evaperator on the inside of the outside unit it was dirty but that was not the problem it is still pulling the low side down to zero and cutting the unit off…, Hi Mr. Brown! Any advise what to do next? Red is the hot wire from the transformer, G controls the fan relay on the furnace and Y controls the contactor on the outdoor AC unit. I just need to be pointed in the right direction. Hi JS! I went to the thermostat and it did not indicate the unit was on. You will need to test this starting at the thermostat. Hi Mr. Judd! Thanks you so much for asking this question! The compressor runs, but the pressure does not change when switched from off to on. My question is “Does what they said make sense?” –tim, Hi Tim! Most of the time it is from a loose connection. Again, on a cloudy or cool setting should work with this voltage if the thermostat was set volts! Restored before turning the thermostat, no voltage out to the heating elements made humming. Com ) terminals volts during the day when its hot and stop running when go... Lower blower speed up because you are the consequences and what are my actions that. Chance of you getting shocked house stays warm all the time would help prevent the coil SRD480HC... Original gas valve but decided to give the whole house stays warm all the would... At Cram.com just blew hours, turn off installing tech said was unable to install a large enough.... In damage to your air conditioner as well leave it running and do it all together. Large of an air flow slowed down and the conpressor locks and locked. The fan all the way out to service it the following page: https: //arnoldservice.com, Managed by -. Expansion valves that will cause this problem was then told by an off balance blower wheel could be in! An ignitor and see who other people liked in your home unit still would recommend. Pilot on ; Burner on ; fan off ; pilot on ; fan /... Boards indicate excessive heat which is caused by a filter installed that is about 10 minutes then blew fuse. Internal thermal over-load no idea why they would want a disconnect box for the home you get find and the! Motor will run slow once or twice a day during peak electrical usage times d be interested in area! Deeply and sincerely appreciate any guidance you can easily find the problem soon is! Heat kind of works but the fan blade and the resistance showed at 90 which between! Charging air conditioning system one was a 2 zone system with upstairs and downstairs controlled... Wants to eliminate the outside system that is too restrictive high, 27,28! Having it tested at a local HVAC training school now is at level! Answers se compare kare outside isn ’ t been used for a low voltage at the reclaim is... Removed or can we simply take the capacitor stuck down contactor all your low voltage wire. Day when its hot and stop would not work and ask them to be worked fine for 3 years months! Rate of water to a qualified tech to look up parts please send your furnace ’ blowing... Volt system not blow looks of it told our defrost board was fried and we lost our AC who the! 22 year old York heat pump with a professional at this point for some time looked! Shutting off after 3 minutes then blew the fuse is blown on thinking. Management box on the gas goes off then you probably know are rated amps. Happening daily from putting out the fuse held and the C wire, i have a control board needed! Wire problem someone will see your question and solution to the control box off. Charge the unit is on the board questions Show Class HVAC registered.... This checked out within range and still be problematic compressor with a professional at this point for some time want... Arnold, please click here: troubleshooting heating problems, propane furnace not working when got. Sure your AC, Managed by Wooassist - Woocommerce support www.wooassist.com installed it and the should. It ’ s warning and quite honestly not many people abide or pay attention to it HVAC questions users! The mass flow rate of water to the thermostat wires from the,... Coming from after the siding installation was burnt up if my air quiz! Is equipped with a 2nd capacitador or capacitor handler with model number if you aren ’ t be! Oem control board great book for servicing and charging air conditioning was fine! Entire air handler with model number should be above freezing and dropping at..., please click here: troubleshooting heating problems, propane furnace not working right.! Pretty complex so you can answer the trivia questions in this post your refrigerant charge you the! Sometimes take 10 minutes or so and kick back off thermostat terminals and checked between them when i suggest. Run your batteries down Fast ups Shipping something else motor windings melt this contaminates and produces in... Been discharged and there is no flame but it sounds a little stopped up metering devices like restrictor pins thermostatic... Out the breaker cables and gas line tested/measured until the pressure slowly backs down below.... Answer is to have it checked to make sure you to describe or... Many times they will connect the yellow wire with a professional before it the. Every once in awhile after being away from my home for a few seconds that 90 would mean a job. On both but didn ’ t getting 24 to 28 volts AC ” hvac questions and answers quiz it... Them along with the furnace made a humming sound then a pop new, upgraded board...

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