a bad thermostat or miswire of the low voltage wiring or a bad heating relay stuck in the heating mode.
A restricted/plugged heater core can do that. Try flushing the heater core.
There is a thermostat somewhere, usually on the wall or on the heater itself. Just turn the breaker off at the breaker box. Label the breaker if it is not already labeled. Once the power is turned off to the unit, you can disconnect the wires inside the heater to permanantly shut down the unit.
It's in the basement. Turn on the light switch behind the dryer, walk past the furnace, stay to the left of the water heater, and you'll eventually see the breaker box on the wall in front of you. For heaven's sake, do be careful.
If you are talking about a wall switch for the heater, check to see if the heater has its own internal thermostat or switch as this might be in the off position and not allow the heater to turn on. If you are talking about a switch on the heater itself, then yes in all probability the switch is not working.
yes, the breaker just controls the heating elements
There are two types of thermostats. One is a line voltage stat. This is in effect a switch and when turned to the off position the voltage is interrupted and the heater will not operate. The other type of stat is low voltage. There will be a relay in the baseboard heater that the thermostat is connected to. With this type if installation to turn the power completely off you will have to turn the breaker off that feeds the circuit.
turn off your water
no as it will burn out the element
Tripped safety switch
Turn the switch off.
twist the knob or push the buttonor flip the switch
It is a relay or switch problem. A circuit breaker or fuse won't keep a light on.