Ideal Thermostat or Control Stuck On

Ideal water heater runs continuously and overheats the stored water, even when demand is satisfied.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Stuck cylinder thermostat contacts, Faulty temperature sensor reading low, Stuck relay on PCB, Incorrect wiring bypassing thermostat

Safety: Overheated water can cause scalding and increased pressure. Turn off power to the heater if overheating is suspected.

Check thermostat setting: Ensure the cylinder or heater thermostat is not set excessively high.
Feel cylinder surface: If the cylinder is extremely hot and heater is still running, turn off power immediately.
Inspect wiring (qualified persons): Confirm that thermostats are wired correctly and not bypassed.
Replace faulty controls: A technician should replace any thermostat or PCB with stuck contacts.

Hard 4/5

Cylinder Thermostat

Check Price on Amazon

We may earn a commission from links on this page.