Nicely done, everyone. Retired or not, I always find your stuff fascinating. And I always find myself missing and then going looking for people that have stuff that needs fixing.
Good presentation. A few tips the outdoor fan leads are not L1 and L2 as in the diagram, they should be basically in and out (Line 1 and Load 1). This is a switch or relay inside the defrost board that shuts off the outdoor fan during the defrost cycle. This relay can go bad causing the fan not to work- or the opposite-to work during defrost cycle. So when testing defrost cycle make sure it is working. Also it may be why the fan isn't running so bypass it when testing for a bad fan motor. The other thing you should mention is the defrost cycle only occurs when the defrost thermostat is closed on most if not all brands. So the cumulative timer counts run time then checks for a closed defrost thermostat then starts defrost. Most brands use -either or- time or temp. to come out of defrost- meaning if the defrost t-stat opens contacts OR if 10 minutes of defrost occurs it switches out of defrost mode. The wiring diagram shows the defrost t-stat closed which is when it is NOT in its normal position but instead is the "cold" or closed position which occurs at about 30°. Unfortunately ICM does a poor job on its wiring diagrams for its defrost controls - I have studied most of them and they are just not well drawn. I hope they revise them- because when a tech is on a job it is very frustrating to try to figure this out. ICM also has poor instructions and diagrams with the fan speed control they sell for slowing the outdoor fan down with lower ambient temp. on cooling cycle. ICM does have good products though.
Thank you Thank you Thank you!!! Been in the rain all day tryna figure this out and now its finally fixed :) so grateful for your time and knowledge! Thanks again!
I have a Carrier heat pump. The defrost used to stay on for about a minute. Now it stays on for 10 minutes even though the ice melted off in less than one minute. Is the board bad?
Thank you for your time. Question: my AC/Heat Pump is freezing up around the indoor unit coil. No AC at all. Thermostat and inside fan are working, filter and A-frame are clean, drain plug is NOT clogged. Outside fan and compressor are working too. I haven't measure capacitance, but assume dual capacitor is good since compressor and fan both run. I haven't check for low refrigerant yet (R-410A). What could possibly be the problem? Would the defrost control board have anything to do here (it's spring time and only inside is freezing). Thank you much in advance!
Thank u sir! But i need to know about the schematic diagram of the control board. It will help to understand far better the in/out of the module and make eaiear its troubleshooting. Thank you sir.
Thank you for your inquiry SuperSueno. You can purchase the SuperCool Slide Rule at our website (please see description for link) under the "Buy It Now" tab. Please feel free to contact us at designsteinllc@gmail.com for any other questions or comments.
Im fairly new to the trade. Really enjoy it but feel like I'm always lacking. What's some good study material? Where can i find electric symbols for units to print off & study?
Why does a new packaged heat pump freeze the txv and the condenser in heating mode when the ambient temperature is 31 degrees and it does not reach the temperature inside the house and when the ambient temperature is at 43 degrees the thermostat keeps the desired temperature in the house
It appears that both pressure switches are high pressure. And the 30,60,and 90 minutes on a trane means that it checks to see if defrost is needed , it does not automatically initiate defrost unless needed
what hoppen if I not have 24 volt on white wire in side on thermostat all wire are power 26 volts only white 19 or 20volts may be the defrost bord is not good.... thanks for any help.
Having an issue with a heat pump at a family member's house. I normally do only commercial (no heat pumps)... Is there any reason I would have power at W2 but not getting power to Y from the tstat? Tstat seems to bring on AUX heat immediately without the outdoor heat pump ever coming on. Their electric bill was crazy, as you can imagine.
When the call for heat exceeds two or more degrees above room temperature, aux heat on some tstats will automatically come on with the outside unit. Check your wiring and tstat.
My outdoor heat pump never turns on, not even the fan. I didn't have 24vac at the contactor, but it was at the transformer. I disconnected the white wire from the thermostat and it works now. Any ideas would be greatly appreciated.
A transformer has a high voltage side and a low voltage side. In residentail applications for heating/air conditioning the high voltage is usually 120vac and the low voltage is 24vac. The colors typically represent which wire is hot and which wire is the neutral or common. In this case the on the high voltage side the black is hot and the white is neutral. On the low voltage side the R is 24v (hot) and the C (common or 24v neutral). The R terminal is a yellow wire and the C terminal is typically a blue wire but that could vary depending on the style (terminal or wired) of transformer.
120 on an ac or heat pump unit? You might want to do a little more reading up on the subject. Just my opinion I know this is an old post, but I don't see anyone throwing up any red flags.
Great video!! I removed my reversing coil and bench tested it using a HVAC 24 volt transformer. After a few minutes is began to really head up. I was wondering if anyone thinks that's weird. Maybe the coil uses the reversing valve body to cool it.Maybe my coil is damaged. Does 1.3amps of current used sound like too much for the coil?
You all probably dont give a damn but does anybody know of a trick to log back into an instagram account?? I was dumb forgot my password. I would appreciate any tricks you can offer me
@Landen Francisco thanks for your reply. I got to the site through google and I'm waiting for the hacking stuff now. Seems to take quite some time so I will get back to you later with my results.
I thought you updated this video. You are still teaching that the fan relay is normally open. Makes one wonder how many other videos you have that is not accurate.
My defrost heat pump board (031-09104-000 ) condenser fan terminals are shorted when thermostat is powered off. When turned on to cool with temperature down, the terminals open so my fan will not turn on. I believe this is a bad board. Would this be correct? I tied the two wires together and the fan motor works great. Power blinked off for 8 seconds and my AC went out. Condenser motor starts find but the fan does not come out so after a few seconds it turns off. I replaced the dual capacitor and measured the old one which tested fine. I believe I have a bad board now.
If I think what ur saying is right take ur black wire for fan outta that lil relay box on board I believe it’s of1 and hook it straight to contactor see if that works
Maybe someone can answer this question. I have an emergency backup generator. That is not capable of powering the heatpump and heat strips at one time. Say the unit calls for defrost and energizes the heat strips to keep the registers from pumping cool air during defrost. I understand the system will have to work harder to keep the house heated or may even fail to hit the desired temperature if aux heat is not online during defrost. 65 is a lot better then 35. With that said, can I just interrupt the w coming into the thermostat with a switch or just disconnect during these times. In theory can't the heat pump continue to function and provide some heat but at a much lower efficiency?
I think you can do just that. You could use an automotive fuse holder and a 1 amp fuse in the thermostat and pop the fuse when you need to. I like the Japanese way of energy usage in an emergency. Kotatsu table and heated mat. A kero K1 heater and sectioned off room.
@@oldengdg2575 these are short term emergencies I'm planning for. No long term multi week power outages. With who I live with now I'm a goner if I stay with them they are immediate family and it's sad to think that but it's the truth. A few 55 gallon drums of kero will heat a large space for quite sometime
quesrrion about board? on circuit board reeplacement we would puut sometjing between board and galvinized mounting surface to avoid contact that could damage board replaced frost control board in goodman heatpump with natural gas fired emergency heat. backup. board was visibly discolored and certaintly had something happen. replaced it put tape on mounting feet which were metal! arre those feet supposed to be metal contacted??
Oh, and a little hint with the toptech,protech,bestech brand tstats with the colored terminal blocks. Your red -Has- to land on the R terminal if it doesn't come with a jumper. Just because that whole block is red doesn't mean that both landings on the block are connected. Had a seasoned tech get screwed on that lol. He thought he had a couple bad thermostats off the van.
In regards to having "two transformers, etc.....", that is not always the case Nothing wrong with being a DIYer, but be prepared to make a few mistakes here and there when you don't know what you don't know. If you don't understand something, at the very least, research what you're doing before you get in over your head. Any amount of electricity can be dangerous and deadly, even "low voltage", given the right circumstances.
You are correct. Thank you for bringing this to our attention. We will correct this right away. Input from our valuable viewers will help us continually improve our videos. Thanks again, Bryan
How can you teach about a defrost board , you are wrong. NORMALLY CLOSED. do you enjoy listening to yourself? Fix your video, or pull it off. So many you people don't have a clue what your talking about.
