Bradford White EF120T4003NA3 Service Manual page 46

Power Anode Inspection and Replacement
Heater components may be HOT when performing the following steps in this procedure. Take necessary
Powered Anode Replacement
The powered anode control board is located on the right vertical side of the control board inside the surround panel. The
control board 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.
1. Check the power supply or wire connections to the powered anode control (120 VDC).
2. Indicator light diagnostic codes:
a. If the LED 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.
3. Check all electrical connections. The powered anode rods are insulated from the water heater tank in the
bushing.
a. With an ohmmeter, check continuity between the powered anode terminal and the bushing. There should
be NO continuity. If there is continuity, replace the powered anode assembly.
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Service Procedure XII:
WARNING
precaution to prevent personal injury.
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