Recent content by 6.7LMegaCab

  1. 6

    Suburban furnace problem - need guidance

    I hope this helps others that has a similar problem and can perhaps save some money. Sent from my SM-G955U1 using Tapatalk
  2. 6

    Suburban furnace problem - need guidance

    Ah! I'll go to their website and try to find the latest install sheet for the model line I have. Not certain where I grabbed the pdf that I downloaded yesterday, but it is the same as the printed one that came with the trailer. Thanks again! Sent from my SM-G955U1 using Tapatalk
  3. 6

    Suburban furnace problem - need guidance

    Welp...further diagnosing is officially over! I was looking at that solder joint, researching the relay, asking some questions about an upgraded relay (with 12VDC nominal coil voltage instead of the current relay which is a 9VDC nominal coil voltage - but within close min-max range). I looked...
  4. 6

    Suburban furnace problem - need guidance

    Looks like the relay or the board is the problem. The inside pin for the power wire connects to a pin on the bottom of the relay and the relay side is burned. That then connects to a relay pin that traces back to the inside pin for the blower connector (its the long trace just below the burned...
  5. 6

    Suburban furnace problem - need guidance

    Alright, so I changed the fuse, still no dice. I found the yellow wire which looks to be connected to a that black wire (part of the red/black wire pair I mentioned earlier) above the furnace and it checks out okay as well. I was able to break the cable tie loose and pull the wires to the...
  6. 6

    Suburban furnace problem - need guidance

    Dan, thank you! This is the chart I've been trying to follow from the installation manual that came with the rig. It seems like something is missing from it as the motor has 3 or 4 wires coming out of it...I'm baffled. I'll look at it again in the morning. The furnace is connected via the...
  7. 6

    Suburban furnace problem - need guidance

    Is there some sort of over-temp lockout somewhere that would otherwise prevent +12V getting to the board? I've been running through my noggin going back to when the issue started. While we were out hunting, bags were placed in front of the return air grill to the furnace. I didn't notice the...
  8. 6

    Suburban furnace problem - need guidance

    I'm willing to buy a new board (or repair this one), but having trouble understanding why there isn't power going to the board itself on wires that I think should have power. I'll sleep on it tonight to ponder these schematics a bit more. Where is the limit switch and would it cause any...
  9. 6

    Suburban furnace problem - need guidance

    Alright, so unless I pull the furnace, I can't access the crimp connections that ties into the trailer wiring. Instead, as painful as it was, I just tested the two white wires through the insulation that I'm guessing are part of Y3 and Y4 and both show 13V as well. There is also a combined red...
  10. 6

    Suburban furnace problem - need guidance

    Thanks, Dan. Working on this now. According to the schematic on the bottom of the case cover, I'm guessing the left connector is Furnace Y4 and the right connector is Furnace Y3. With the thermostat off, Y4 has +13.22V. Y3 shows zero. With the fuse installed and heat called, both Y3 and Y4...
  11. 6

    Suburban furnace problem - need guidance

    Thanks all! So I've been out here troubleshooting this thing this morning. I checked for voltage at the red spade connectors on the control board which should provide the +12V to power the blower and provide the necessary voltage for everything else. There isn't any power getting to the board...
  12. 6

    Suburban furnace problem - need guidance

    Good call on that! I will check for 12V at the relay and apply 12V to the motor just to be sure the motor isn't bad. It's odd that something that was just fine one day suddenly stops working the next. Both Digikey and Mouser are definitely my go to electronic parts suppliers. One of them I have...
  13. 6

    Suburban furnace problem - need guidance

    Motor spins freely. I know power is getting to the circuit board because there is an audible click once power is signaled (ie calling for heat at the thermostat). We are home now and just decided to forgo the repair while away for a few reasons. 1. Mobile repair guy was the only one that had a...
  14. 6

    Adding Rear Hitch Receiver to RW 400

    Cool story. Like 300 lbs or there about will make a difference (actually, the tongue weight would be less), especially if the garage isn't even at its max weight that it can hold. Therefore, if I wanted to, I'll triple tow with it, however, if you actually read the comments, I basically can't...
  15. 6

    Suburban furnace problem - need guidance

    Stove works fine. Fridge on propane works fine. Batteries are fine. Fan on heater will not turn on. I hear a click at the AC and at the heater when I turn the thermostat to heat. Nothing happens. Fuse is good. Sent from my SM-G955U1 using Tapatalk
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