Troubleshooting Therma Heat Pads that are Not Thawing Out 30 Gallon Tanks
Question:
Hello, I recently installed a pad on each of my holding tanks. 30 gallon tanks. I feel warmth where the leads are attached, yet my tanks are frozen. Any ideas? Temps are in the 20’s outside. The product is supposed to be able to thaw frozen tanks correct the tanks were not frozen when installed. Not super happy with the product so far.
asked by: Noel
Expert Reply:
Sorry to hear that your heating pads part # 277-000162 and part # 277-000161 are not working properly.
I spoke with my contact at Therma Heat who said that there are a few things that you can do to troubleshoot them.You will want to check the following:
Make sure they are getting appropriate voltage supply (13.5V DC)
Make sure the polarity of the connections is correct.
Make sure the total amp draw on the circuit is appropriate for its’ capacity.
Make sure the placement of the pad is at the lowest point of the tank and approximately in the center. This is critical to allow the convection effect of the heated contents to rise and the cold contents to sink and then be heated.
Since you are touching the pads on the foam insulated side that is why you are only feeling a little bit of heat. The insulation on that side helps to direct the heat towards the tank instead of letting it escape on the side that isn't touching the tank.
If you have checked all of this and it looks good, please let me know and I can help you troubleshoot further.

Products Referenced in This Question
ThermaHeat RV Dump Valve Pipe and Elbow Heating Pad - 13" Long x 3" Wide
- RV Fresh Water
- Winterization
- Elbow Heating Pad
- LaSalle Bristol
more information >
Product Page this Question was Asked From
ThermaHeat RV Dump Valve Pipe and Elbow Heating Pad - 8" Long x 3" Wide
- RV Fresh Water
- Winterization
- Elbow Heating Pad
- LaSalle Bristol
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Video: Detailed Breakdown of the ThermaHeat RV Dump Valve Pipe and Elbow Heating Pad
- Shop: Universal-Design Rocker Switch - SPST - On-Off - 12 Volt - 20 Amp - 3-Blade - Red Pilot Light
- Shop: ThermaHeat RV Dump Valve Pipe and Elbow Heating Pad - 13" Long x 3" Wide
- Video: Coghlan's Clothesline Reel Feature Review
- Shop: ThermaHeat RV Holding Tank or Step Heater Pad w/ Thermostat - 18-1/4" Long x 12" Wide
- Shop: Everchill RV Refrigerator w/ Freezer - Reversible Doors - 10.7 cu ft - 12V - Stainless Steel
- Shop: Replacement Screen Frame with Screen for Ventline Ventadome Manual Lift Roof Vents - Birch White
- Shop: Coghlan's Clothesline Reel - 21' Long
- Q&A: Options for RV Use During Winter, Preventing Pipes and Tanks Form Freezing
- Q&A: Are Heater Pads Self-regulating or is a Thermostat Needed?
- Q&A: Is There Guide on How Many Thermaheat Elbow Heaters to Use
- Q&A: RV Holding Tank Heater Pad for 40 Gallon Tank
- Q&A: Are Tank Heaters Needed for Gray and Black Water RV Tanks
- Q&A: Can the Kats Heaters Handi-Heat Magnetic Heater be Used to Heat Water Pipes on an RV
- Search Results: clothes line
- Search Results: cabinet latch
- Search Results: ventline vd0433
- Shop: RV Cabinet Catch and Strikes
- Search Results: generator rack
- Search Results: generator carrier
- Search Results: casita trailer parts
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Search Results: trailer hitch
- Q&A: Everchill Model WD-282FWDC-B-6 RC refrigerator
- Shop: Trailer Wiring
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Video: Air Lift LoadLifter 5000 Ultimate Rear Air Helper Springs with Internal Jounce Bumpers Review
- Video: Redarc Tow-Pro Liberty Brake Controller Review RED24FR
- Shop: Suspension Enhancement