Bradford White EF120T Installation & Operation Manual With Troubleshooting Manual page 50

Powered Anode System
These heaters are equipped with a powered anode system. The powered anode system provides corrosion
protection to the tank by supplying a low voltage current to the titanium anode rods and then periodically
comparing this current with the potential between the anode rod and tank wall to make corrections. The powered
anode system is designed to extend the tank life without requiring anode rod replacement. The powered anode
system consists of two titanium powered anode rods (31 7/8 in (81 cm) long), located in the front top of the water
heater tank, and the powered anode control module located on the right side of the control panel.
The powered anode rod must have the electrical power supply connected at all times in order to provide
corrosion protection to the water heater tank. If the electrical supply to the water heater is to be off for an extended
period of time, the water heater must be drained. Turning off the lighted switch on the front panel to shut off the
water heater will not turn off the powered anode system, as long as the line cord is plugged in and the breaker
is left on.
The powered anode control module is located on the right vertical side of the control panel inside the surround
panel. The control has a LED indicator light to show the status of operation. When the tank is filled with water
and the power supply is on to the water heater, the light should have a steady green glow to indicate that
protection current is flowing and operating normally. If the indicator light is not glowing, the power supply to the
water heater or powered anode system is disconnected. Check the power supply or wire connections to the
powered anode control.
If the control is flashing red, then there is a malfunction with the powered anode system. Make sure there are no
bare spots in the wire insulation to the powered anode rods. Check all electrical connections. The powered anode
rods are insulated from the water heater tank in the bushing. With an ohmmeter, check continuity between the
powered anode terminal and the bushing. There should not be continuity. If there is continuity, replace the
powered anode assembly.
Figure 33 – Powered Anode Locations
(Jacket head removed for clarity)
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