Thor Forums

[bevedfelker]

Want to be sure I understand what you are asking. When you say LP switch you are talking about the switch on the control panel that lets you select propane operation for the water heater?

A general warning is to never have the hot water heater on with no water in the tank. So I'm assuming the water heater switch for gas was what was left on. I'm also assuming you have a water heater switch for electric as well but that switch was not on. Was the propane bottle valve open so that propane would flow through the system? Was the battery disconnect switch in STORE?

If the battery switch was in USE then the DC portion of the electrical system was operational. With the water heater gas (LP) switch on the water heater would try to light. If the propane valve was closed after a few sttemts to light the water heater and failing to light because of no propane, the igniter would quit. My sense is that would cause no harm. If the bottle was on I suspect it would have used all your propane. In that case you need to have the water heater checked to be sure it wasn't damaged.