Troubles with Suburban SW6DEL Water Heater
This water heater is in a 2014 Outback 298RE. With the LP gas heating the water if the 120v. element is turned on, the following cycle when heat is needed the LP will not start. Tests that I have do...
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A wire or connection can get physically hot, but whoever said "hot ground" might mean the polarity of the wiring got reversed. Your 120-volt-AC wiring has "hot" (black wire) and "neutral" (white wire) and switching them can cause problems. In a 12-volt-DC system, Battery Negative is Ground and is connected to the RV chassis. Battery Positive is commonly called "hot", so this person could be referring to the 12VDC aspect of this water heater (controls, logic board only, water is heated with 120VAC or LPG, not 12VDC). If the heater wasn't grounded, or 12VDC was connected instead of Battery Negative/Chassis Ground, I can imagine the logic board could get confused.
We have SW6DE, and I'm not sure what your "L" means. On ours, neither 120VAC heater nor LPG burner is temperature adjustable. Suggests to me that whichever was set to cut off hotter would prevent the other from operating, since its temp setting was already achieved.
Do you have a Meter? This kind is called a Digital Volt Ohm Meter (DVOM).
Ground black to the Chassis and see if what should be +12("hot") actually is. Then see if there's voltage from water heater cabinet to that same chassis ground. There should not be. Then check for continuity from water heater cabinet to chassis ground. There should be.
If I had to guess, 12VDC hot and ground might be reversed at the heater. But more likely the thing isn't grounded.
We have SW6DE, and I'm not sure what your "L" means. On ours, neither 120VAC heater nor LPG burner is temperature adjustable. Suggests to me that whichever was set to cut off hotter would prevent the other from operating, since its temp setting was already achieved.
Do you have a Meter? This kind is called a Digital Volt Ohm Meter (DVOM).
Ground black to the Chassis and see if what should be +12("hot") actually is. Then see if there's voltage from water heater cabinet to that same chassis ground. There should not be. Then check for continuity from water heater cabinet to chassis ground. There should be.
If I had to guess, 12VDC hot and ground might be reversed at the heater. But more likely the thing isn't grounded.
