where do they hide the thermo disk?

[PeteandDeb]

New (to us) 2008 Diplomat. Temps are getting down there here in Arkansas so I'm trying to ensure no freeze damage before we head out for a Christmas trip ... and it appears that the doggone wet bay heater works as well as it did in the LaPalma (not). Hit the system heat switch and the fan was running but no heat. I understand there's a thermo disk in the wet bay but I have yet to find it.
Any clue on where Monaco might have hidden it?

[96 Wideglide]

Don't know if your Dip wet bay panel is the same as mine, but I have a corner white panel in the far right side that screws to the main white panel. It is in front of the Sani-con. My thermo disc is screwed to the top of this panel.

Hope this helps!

[Captjake1]

...and our 08 Beaver it is just hanging behind the panel, accessed from access panel in cargo bay.

[rgl]

re: "and the fan was running but no heat. " Sounds like the snapdisk is activating the fan but the heater part of the fan/heater is not working. There is probably a fuse inside that needs replacing. There are other posts on this sort of problem where some have replaced the 12 volt heater with a 110 volt heater. Good Luck!

[nodine]

Originally Posted by PeteandDeb

New (to us) 2008 Diplomat. Temps are getting down there here in Arkansas so I'm trying to ensure no freeze damage before we head out for a Christmas trip ... and it appears that the doggone wet bay heater works as well as it did in the LaPalma (not). Hit the system heat switch and the fan was running but no heat. I understand there's a thermo disk in the wet bay but I have yet to find it.
Any clue on where Monaco might have hidden it?

Pete,

The thermal fuse is inside the bay heater. Very common problem with the bay heater. Since the fan is running but there is no heat it sounds like the thermal fuse is bad. The bay heater can only put out 300 watts on a good day. If you are worried put a small cube heater or work light in the bay. Here is a photo of the thermal fuse inside the heater.

Bob

[PeteandDeb]

Thanks folks. I agree it sounds like the same problem I had with the LaPalma ... thermal fuse in the heater. Replaced it in that unit but no joy, so before I started dissecting this one, I wanted to check for other issues ... but it makes sense that if the fan is running, the snap disk is operational.
Right now I'm watching the weather and plugging in a 120v ceramic heater as needed.

[-Gramps-]

Those thermal fuses are UL liability add-on. They cannot take the bouncing around when the coach is going down the road and they break. I bypassed the one in my heater, just cut it off and re-soldered the wire to the circuit board. I did this a bunch of years ago and the heater is working fine. The heat element never gets so hot that you can't touch the heater grill with you bear hand anyway, so the thermal fuse really didn't do anything for me except cost me a water pump that froze while my "heater" was blowing cold air.