![]() Now, why in the world do they place a red LED light inside a control box that cannot be seen without opening up the box itself is anybody's guess. Called tech support again, they said if there is red LED light isn't lit, the board is blown, the transformer on the board he said is usually the culprit. I noticed that right next to the cable jack on the circuit board is a red LED light and on the board it reads "power". I even grounded the tester on one lead, then checked each of the 8 pins for any voltage, none found. Pins 1 and 6 are the positive/negative wires in the cable, he wasn't sure which side of the cable is pin 1, so I test both ways. Okay, pulled the 8-pin cable out of the jack on the control board itself, tested for 5vdc to 8vdc across pins 1 and 6 there, nope, no voltage there either. Pulled the 8-pin cable out from the back of the display and tested if there is 5vdc to 8vdc across pins 1 and 6, nope, no voltage there. The tech support folks at Dometic/MarineAir gave me some troubleshooting help. Line voltage to the breaker and circuit board white/black lead wires reads a solid 115vac, so power is fine. I see Marine sells some retrofit kit but before I go down that road, any help here would be appreciated. I doubt this is it, but I will check tomorrow. Okay, I didn't check this, but this is my normal slip where I keep my boat. Nothing.ħ) Input line voltage is 65 volts or less on 115VAC. I pressed and held it down for up to a minute. How can I test this? I've found only one place online and a new panel is about $500. With power off at the breaker, exchange display panels. Not sure how to even test for a bad 8-pin cable or why it even would go bad.Ħ) power button is defective. I unplugged both ends, blew a little air into them, reseated them, jiggled them a bit, nothing. Anyone know what this is? Manual also says it has solid state fuses, so its kind of ambiguous to me on which one it really is.ĥ) 8-pin display cable plugs are not making contact (dirty, bent, broken). It just looks like a circuit board to me, nothing "fuse-like" stands out. Anyone ever have this experience and any info?Ĥ) Transformer fuse is blown on control module circuit board. Circuit board must be repaired/replaced, call for service. It doesn't rewire itself in the middle of the day.ģ) Metal oxide varister (M.O.V) is blown on control module. Well, my a/c has been working for a couple of years, so this isn't it. Duh.Ģ) Wiring at terminal strip is mis-wired. The manual I have says if the system wont start and the display is not illuminated, it can beġ) circuit breaker off. Pulled that out of the display as well as the control unit, that looks fine. I pulled the display panel off, it has a 8-pin cable connector. I pulled the cover off the control box, tested the power to the unit by touching the black/white leads, that reads 115v as well, so its getting power. The control box is located under by cabin entry steps. I even tried replacing the breaker just in case, still the display is dead, the a/c doesn't start either. I pulled the breaker panel off in the cabin, I tested the 30-amp breaker with a line tester, voltage read 115v. ![]() The electronic display in the cabin entrance doesn't power up, and the a/c unit doesn't start. ![]() Its the Marine Air Systems VHT16k-H model. Was working yesterday and for the last 3 years. I have a 95 3200 SCR, today my a/c stopped working.
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