This should insure that lower thermostat is allowed to engage. But if there are no readings then the thermostat is faulty.
You should have a reading or show continuity when putting the meter on the two terminals on the element.
How to test rv water heater thermostat. To check the lower thermostat you need the upper thermostat turned off. Further troubleshooting may be needed to determine the cause of the. Many of the previous issues were easy to see.
Turn off the electrical power to your water heater at the main electrical panel. You should open it and let the water flow into the tank. As the name suggests, the gas valve that controls the propane is manually activated.
Place your red probe on the positive and the black probe on the negative to see if you are getting 12v power to your thermostat. The valve is located on the exterior side of the rv and utilizes a standing pilot light which has to be lit from the outside of the rv.; Turn the power off to the water heater at the circuit breaker.
Although the rv water heater has different models and brands, most rvs have the same steps that you are able to apply to your unit. Use the water heater tester to check terminals #1 and #2 (the lower set). Test for proper voltage on each side of the water heater element by touching one probe of your multimeter to each screw, while touching the other to common ground.
They cannot be added later. Test water heater elements for an electrical short. • skin mounting allows the water heater to be hooked up with plumbing and electrical before
Next, you will need to check to see if the dc volts are correct and they should be between 10 and 30 as well as check the polarity. But a faulty thermostat may not appear any different on the outside. Here is how to test a water heater thermostat;
If the hot water cannot stay hot after some time, the lower thermostat is defective. A new water heater tank with this feature must be installed to use the heat exchanger. Install the insulation again on the panels.
Remove the square black cover to expose the rv water heater thermostat switches. When troubleshooting your rv’s water heater,. The water heater tank must have factory equipped heat exchange tubes welded on it already.
Try bypassing the switch temporarily. These are panels attached with screws on the tank of the water heater. Now do the same procedure on the other remaining terminal of your thermostat.
Remove the water heater’s access cover panel and insulation from the upper water heater element. The best way to determine if it needs replacing is to check your thermostat with a multimeter. Troubleshoot electric water heater and replace thermostat.
Consult youtube, which is full to the brim with tutorials wherein other clever campers replace their rv thermostats and get into the nitty gritty on rv thermostat wiring. Again, when the heater is cold, you should read continuity. You can pick one up online for about $10.
Now attach your multimeter to the terminals so that the heating element gives you perfect reading. Reconnect the circuit to its power source by activating the circuit breaker. The other thing to test is the thermostat mounted to the back of the heater.
Switch on the water heater for two hours, then run the hot water faucet to see if the water is well heated. To check it, place the probes of the multimeter on the screws touching the heating element. Connect the multimeter pin ends on point 1 & 2, as shown in the picture below.
Make sure your multimeter is set to dc volts. Once removed, you can test if your thermostat is getting power. How to troubleshoot a defective thermostat on an electric water heater
The reading here must also show the perfect 240 volts. You can then test the element with the ohm scale or continunity setting. If you get a reading of the power then the thermostat is good, if not then your thermostat needs to be replaced.
The lower thermostat needs to be turned to its highest setting. Before you do that, first check if the lower thermostat is ok or not. Put the plastic cover back on the thermostat and the heating element.
• a heat exchange option is available. Open the top and bottom access panels using a screwdriver. If the water is cold, the multimeter will point near zero.
Test the water heater thermostat. Now to check the lower thermostat, you need to set the dial of the upper thermostat to the minimum and set the lower thermostat to the highest. Replace the chamber panel and insulation of the thermostat.
If the reading shows 240 volts the power is sufficient. Water heater element testing can be risky for first timers. Go back to the breaker box and turn the electricity to the water heater back on.
Testing the water heater thermostat involves the checking of the heating element also. It is best to test each thermostat with a multimeter to know which one needs replacing. Attach the panels back to the hot water heater near the water tank.
These models allow the user to flip a switch inside the rv to. Test the lower water heater thermostat Before you proceed further with the process of testing the heater thermostat, take a screwdriver and the multimeter.
How to operate the rv water heater. The thermostat itself should be on a mounting bracket, from which it can be easily removed. You need to check the water heater bypass valve.
This is the most common type of water heater in today’s rvs. If the opposite thing happens, that means your thermostat has defected. If the water is hot enough at appointed temperature, the meter won’t show reading.