Converter fan? March 15, 2025, 06:03:01 pm Hi all—did a search and did not find a good answer. We are in Florida and the weather is heating up. Seems like when the temps are above 70 degrees, the fan in my converter will run periodically for a few minutes at a time. New to me 2007 23 1/2 Twin King. I changed the battery from two six volt units to one 12 volt deep cycle. I have replaced all interior lights with LED. No other changes electrically. Is it normal for the fan to run periodically? In the 23 1/2 T/K the converter is under the refer and when I open the drawer above the converter, I can feel a lot of warm air coming out. Do I need to ventilate? Maybe install a fan to remove the heat and maybe that will keep the converter fan from coming on? Any help would be appreciated.
Re: Converter fan? Reply #1 – March 16, 2025, 01:14:17 am I would check first if you are using anything at 12V that might be consuming a lot of energy. If not, then some converter models run the fan more than others. There are better converters that need to spin the fan rarely with typical usage, and then more quietly. Example would be the Progressive Dynamics 4600 series, which can be DIY if you have wiring experience.Steve
Re: Converter fan? Reply #2 – March 16, 2025, 08:33:09 am Only thing I can add is what I notice with mine, which was replaced a few years ago with 6300 45 KIT 45 Amp Kit For 6300 Series from Bestconverter.com.When I first turn on the battery disconnect switch or have fluorescent lights and exhaust fans on mine runs, other than that pretty quiet.
Re: Converter fan? Reply #3 – March 16, 2025, 09:51:05 am Thanks StevenJill! Makes sense as we are using both FanTastic fans and leave the kitchen florescent on most of the time. Explains it since we still have the original converter.
Re: Converter fan? Reply #4 – March 16, 2025, 01:09:15 pm Hi Chartrue: The fan is there to prevent the electronics in your converter from over heating. Naturally as your temperarure increases, the fan will run more. The heat generated, filling the under cabinet area, is normal, and will vent out through the (sides) of the screened area next to the converter. That vent also provides intake air for the forced air space heater. A 'deluxe' feature of Lazy Daze is the two very deep cycle 'golf cart' batteries wired in series. That ensures that an equal current passes through each battery for charging and discharging. Did you find one 12v battery the same form factor as the two 6volt? 12v. batteries in parallel will end up with one dragging down the performance of the other(s) and isn't optimal. 12v. Lithium batteries can be connected in parallel because of the battery management unit (BMU) built into each battery. Currently on the beach in my 25 y.o. T/K at Jalama, Ca. Sunny and a little warmer today. (48 last night, better than 38!) Lithiums good! RonB 2 Likes
Re: Converter fan? Reply #5 – March 17, 2025, 09:15:11 am Hi and thank you Ron B! Just as I thought, the fan runs with increase exterior temperatures. When I replace the 6 volt golf cart batteries with one 12 volt deep cycle battery, I did this to spend less money as we don’t usually boondock and usually have full hook ups. Maybe I should reconsider my decision and replace the 12 volt single with two 6 volt units again. Don’t know enough about lithium, but a changeover would also require a new converter?
Re: Converter fan? Reply #6 – March 17, 2025, 08:35:35 pm Hi Chartrue2; In the old days (2-3 years ago) the batteries were so expensive that it made sense to optimize their use by spending money elsewhere to get every last watt into and out of a Lithium battery. The electrical system is set up for lead acid. It takes a higher voltage to charge lead acid, so Lithiums can still charge from that and work. Not optimized, but still functional. You already bought the lead acid battery, You can use it until you want more power, or it is wearing out. By then AGM's will have disappeared, and Lithiums may have better features, lower costs, etc. RonB 2 Likes
Re: Converter fan? Reply #7 – March 19, 2025, 01:54:21 pm You may have already answered your question in your original posting when you said that a lot of heat comes out of the drawer when it is opened.I would try adding ventilation. I like these 2" diameter vents, I would start with two vents, one located high and one low to encourage thermal cycling.2" Round Plastic Louver Soffit Air Vent Reptile Screen Grille Cover Multiple...If that doesn't fix the issue, there are better converters. Our Progressive Dynamics converter's cooling fan only ruins when charging at a high rate for a while, it never runs with light loads.Larry As an Amazon Associate Lazy Daze Owners' Group earns from qualifying purchases.
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