Community Forums

clawsonbob · 08-03-2021, 05:53 AM

In our 2015 DS 4369, we’ve enjoyed the 3 zone tile floor heat without issue. This last trip, our rear bath and master BR floor heat worked fine, but the forward zone (salon & kitchen) did not. Wall switch for floor heat illuminates normally, fuses/breakers all are all fine, I hear a slight ticking in 1/2 bath V-bus controller when wall switch is toggled, but no heat in the forward zone. I presume the low voltage V-bus activates a relay or controller for the actual 120v AC heating element, but I do not know where they are located to check/test. Any help on locating such items or other things to check appreciated.

Hoping it’s not an “in floor”problem. Thanks in advance!

Justin Townley · 08-03-2021, 06:36 AM

The front zone floor heat relay is usually located in a 4” electrical box in the first drivers side bay, you can identify it by the yellow wires that are the coil wires for the relay. The picture attached is on a 2020 Newmar Ventana that we have in stock, but the location should be the same. The relay your hearing in the back is actuating the coil on the front relay. Let me know if you can’t find it and we can look in some other common areas.

clawsonbob · 08-03-2021, 08:44 AM

Quote:

Originally Posted by Justin Townley

The front zone floor heat relay is usually located in a 4” electrical box in the first drivers side bay, you can identify it by the yellow wires that are the coil wires for the relay. The picture attached is on a 2020 Newmar Ventana that we have in stock, but the location should be the same. The relay your hearing in the back is actuating the coil on the front relay. Let me know if you can’t find it and we can look in some other common areas.

Thanks Justin- I’m out and about today but will check that when I get back. I appreciate the reply !!

Winepress · 08-03-2021, 10:44 AM

Justin is right on. Had the same issue and it was the relay that is in that box. The location that he indicated is where mine was.

DrPhil · 08-03-2021, 11:08 AM

Had same problem, but who knows if the cause is the same. See this thread:

https://www.irv2.com/forums/f103/tro...at-514698.html

clawsonbob · 08-03-2021, 04:53 PM

Quote:

Originally Posted by Justin Townley

The front zone floor heat relay is usually located in a 4” electrical box in the first drivers side bay, you can identify it by the yellow wires that are the coil wires for the relay. The picture attached is on a 2020 Newmar Ventana that we have in stock, but the location should be the same. The relay your hearing in the back is actuating the coil on the front relay. Let me know if you can’t find it and we can look in some other common areas.

Justin, thanks again. So I’m back on our DS4369 and I’ve located three 4” floor heat relay boxes, marked as follows:

Living Room - drivers side basement, as u said

Kitchen - in 1/2 bath vanity under sink

BR and Bath - in rear master bath.

I always thought bath amd BR were separate zones but as we always use all 3 for floor heat, I never noticed bath and BR are the same (aft) zone, the kitchen is mid and the living room is fwd. So I’ve confirmed that all three relays “tick” when powered on, and when turned off, but not on Interval settings. So I guess I really only have the rear zone working now (BR and bath). What do you suggest next - try & test output from relays to see if I have relay issue or floor wiring issue?

Thanks again- learn something new every time something breaks.

Justin Townley · 08-03-2021, 05:17 PM

Quote:

Originally Posted by clawsonbob

Justin, thanks again. So I’m back on our DS4369 and I’ve located three 4” floor heat relay boxes, marked as follows:

Living Room - drivers side basement, as u said

Kitchen - in 1/2 bath vanity under sink

BR and Bath - in rear master bath.

I always thought bath amd BR were separate zones but as we always use all 3 for floor heat, I never noticed bath and BR are the aft zone, the kitchen is mid and the living room is fwd. So I’ve confirmed that all three relays “tick” when powered on, and when turned off, but not on Interval settings. So I guess I really only have the rear zone working now (BR and bath). What do you suggest next - try & test output from relays to see if I have relay issue or floor wiring issue?

Thanks again- learn something new every time something breaks.

I would start at the relay, you should have 4 wires, the 2 yellow are 12vdc when power is applied, meaning set the floor heat to the highest setting and they will stay on, the other two will be 120vac in and 120vac out, when testing this set your multimeter to Vac or V with a sign wave over it, test the AC wires to a good ground or neutral not to each other. What I suspect you will find is no power on the AC side, this should be fed by a GFI, my memory isn’t good enough to tell you rather or not the GFI was always in the same spot but new coaches it is in the mid bath electrical cabinet above the electrical box. If you need help further diagnosing or aren’t confident in your meter usage you can give me a call 404-314-9996, if I don’t answer I will call back within the hour

clawsonbob · 08-03-2021, 05:50 PM

Quote:

Originally Posted by Justin Townley

I would start at the relay, you should have 4 wires, the 2 yellow are 12vdc when power is applied, meaning set the floor heat to the highest setting and they will stay on, the other two will be 120vac in and 120vac out, when testing this set your multimeter to Vac or V with a sign wave over it, test the AC wires to a good ground or neutral not to each other. What I suspect you will find is no power on the AC side, this should be fed by a GFI, my memory isn’t good enough to tell you rather or not the GFI was always in the same spot but new coaches it is in the mid bath electrical cabinet above the electrical box. If you need help further diagnosing or aren’t confident in your meter usage you can give me a call 404-314-9996, if I don’t answer I will call back within the hour

BIG SHOUT OUT to Justin at NIRVC for getting my floor heat back ! I had already realized I needed to test the AC output of the relays, after Justin pointed me to where they were. What I didn’t know, was that they were powered by a GFI circuit, that in my coach, was hidden behind the drain tube in the 1/2 bath vanity, and had been tripped. A simple reset and the fwd floors are toasty once more !!!

Thanks again Justin -I owe you a cold one !!! Kudos to YOU and the NIRVC team in Atlanta area!

lsodi · 08-03-2021, 05:50 PM

Have you check the GFI I had the same problem and Newmar has a GFI plug that was tripped I reset it and everything started working.

clawsonbob · 08-03-2021, 08:18 PM

Quote:

Originally Posted by lsodi

Have you check the GFI I had the same problem and Newmar has a GFI plug that was tripped I reset it and everything started working.

Thanks- that’s exactly what mine turned out to be also. Took me a while to get to that (thanks to Justin- see post above). Was hoping it would be as simple as a relay but fearing a broken connection under tile. Thanks all!!