Bradford White ERE240 Service Manual page 9

TROUBLESHOOTING
3 Flash Amber code:
1) Turn "OFF" power to the water heater.
2) Remove Control Module retaining screw and inspect the 5 pin connector on the back
ensuring a good connection and that no pins are damaged on the Control Module.
3) Remove the lower handhole cover and check the 3 pin connector on the Power Switch
Module, ensuring that the connector is properly attached and there are no damaged pins
on the Power Switch Module.
4) If connectors were not properly attached, reattach, and skip to step 6.
5) If connectors were properly attached, disconnect the three wires at the lug terminals on the power
switch module.
6) With a multimeter set to the ohms (Ω) setting, check the resistance between terminals 1 and 2 on
the Power Switch Module, as well as terminals 1 and 3. The resistance should be around 50-
80MΩ for each. If the values are lower than that or if there is a large discrepancy between the
two measurements, follow the procedure to replace the Power Switch Module as shown on (page
17)
7) Replace the handhole cover and insulation and button up the water heater.
8) Re-apply power to the water heater.
4 Flash Amber code:
1) Turn "OFF" power to the water heater.
2) Remove Control Module retaining screw and check to see that the 5-pin connector is properly seated.
3) If the connector is properly seated, disconnect the control module from the 2 pin and 5 pin
connectors.
4) Remove the insulation from the handhole.
5) Inspect the connector for the upper temperature sensor and make sure there are no broken or
disconnected wires. If there is damage or a displaced connector, replace the connector.
6) With a multimeter set to the ohms (Ω) setting, measure the resistance between the two terminals
of the temperature sensor. Depending on the temperature of the tank wall, a reading should be
somewhere between 1.2kΩ if the tank is quite hot to around 33kΩ if the tank is quite cold. If
sensor is out of this range, follow the instructions to replace the temperature sensor. If the
sensor is in range, and everything is connected, replace the upper temperature sensor and the
Power Switch Module.
5 Flash Amber code:
1) Move the Setpoint Knob back and forth several times.
2) Cycle power to the water heater
3) If problem persists, replace the control module.
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