Nothing in Owners Manual about Heated Holding Tanks, so called dealer about how they are supposed to operate. Said the light should go on when the switch is on, also there should be a 12V fuse labeled "HTH" (Holding Tank Heater). Well there's not fuse on the panel for the WFCO 8900 labeled like that. We have 12V fuses for things like
I'm curious what we why there's a fuse for the A/C or TV. Both would use 110V. So makes me wonder if the switch even got wired up.
So I did find in the 2011 Windjammer Brochure under list of features something called "Electronically Controlled Heated Holding Tanks" as "Standard".
And found the following in the Forest River "Motorized" Owners Manual.
HOLDING TANK HEATING PADS
1.) When the outside temperature is near freezing, simply turn ON the holding tank heater’s 13.5 VDC power switch and/or plug in the 120
VAC power cord.
2.) There must be liquid in the holding tank, pipes, and elbows when UltraHeat™ heaters are ON.
3.) The tank heater immediately starts protecting your holding tank from freezing up.
4.) The thermostat on the heater will turn ON the tank heater as soon as the tank temperature drops in the tank to 44°F (7°C). The tank
heater immediately starts protecting your holding tank. When the temperature in the holding tank rises to 64•F (18˚C), the tank heater
will automatically turn OFF.
5.) If using a generator or other power source, which exceeds the heaters voltage requirements, turn the heater OFF and/or unplug the power
cord to avoid eventual damage to the heater’s thermostat.
6.) Turn the power switch OFF (and/or unplug the power cord on the Dual Voltage Model when the outside temperature is above freezing.)
7.) Failure to follow these operating instructions could result in the voiding of your warranty. (The control is generally located in the command center.)
NOTE: Tank heaters are thermostatically controlled. This product has been tested and designed to be used as a heating device for RV fresh water supply and waste water holding tanks
made of standard grade plastics. UltraHeat, Inc. assumes no liability for any usage of product for purpose other than what is consistent with the original design and testing.
Guess I need to pull the control panel and the cover for the Power Distribution Center (WF-8900) and see what we've got.
Will post findings.
ps. Looks like we made it ok last night with temps down to in mid-20's. Furnace and HW Heater running.
TT 2011 Rockwood Windjammer 3008W
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