Went out to the garage to change the hoses on the water heater and replace the dryer vent hose...unplugged it, drained the tank so I could move it over a little to get to the dryer vent hose. Got it done installed new hoses, filled it back up and plugged it in. Now it does nothing. It's a dual element....have power to the upper thermostat on both legs, power to both sides of upper element, power to lower thermostat and element but it's not heating..... Am I missing something?
If you drained the water heater tank without shutting off power first, you fried the heating elements.
With no water, thermostat says you need heat (because there is no hot water on/near the thermostats) and sends power to the element(s) which are no longer submerged in water, thus the elements overheat and burn out.
If you did turn off the power to the water heater before draining it, and now the heater isn't 'making' hot water, something isn't working right.
Check for voltage, then with power disconnected you can check for continuity of the various items in the circuit, with power back on you can check for amp draw (maybe, with a clamp-on type ammeter) on the heating elements.
