Bradford White ERE240 Service Manual page 12

TROUBLESHOOTING
Quick Step to Hot Water
1. TURN OFF power to water heater and check all wire
connections to ensure they are tight and corrosion free.
2. Turn power "ON" and determine that service voltage is
present, and the high limit (ECO) has not actuated.
3. Check for inoperative heating element.
4. Check for proper High Limit (ECO) operation. NOTE: High Limit (ECO) testing procedures assume items 2 and 3
above are in working order.
SYMPTOM
No Hot Water
Not Enough Hot
Water
Slow Hot Water
Recovery
Over Heated
Water or
Continuous
Operation
Noisy (singing or
hissing) Elements
12
PROBABLE CAUSE
1) No power to heater.
2) Loose wire connections.
3) Inoperative heating elements.
4) Inoperative Power Switch Module
5) Open High Limit (ECO)
1) Temperature set too low.
2) Inoperative lower heating element.
3) Loose wire connection
4) Sediment or lime buildup on element(s).
5) High demand period.
6) Undersized water heater.
7) Very cold inlet water to heater.
8) Plumbing connections reversed.
9) Damaged dip tube.
1) Sediment or lime buildup on element(s).
2) Loose wire connections.
3) Derated heating element installed
4) Inoperative element(s)
5) Poorly coupled Power Switch Module.
1) Temperature set too high.
2) Upper temperature sensor not in contact
with tank.
3) Grounded heating element(s).
4) Inoperative Power Switch Module.
5) Inoperative High Limit (ECO).
6) Undersized water heater.
1) Lime formation on elements.
12
WARNING
High voltage exposure. Use caution when
making voltage checks to avoid personal
injury.
CORRECTIVE ACTION
1) Check all fuses or circuit breakers in
service panel.
2) Check all wire connections.
3) Check heating element(s). Replace as
needed.
4) Check Power Switch Module operation.
Replace as needed.
5) Check High Limit (ECO). Reset or replace
if needed.
1) Increase temperature setting
2) Check heating element(s). Replace as
needed.
3) Check all wire connections.
4) Reduce demand.
5) Replace with larger water heater.
6) Temper water to heater.
7) Correct plumbing connections
8) Check dip tube. Replace as needed.
1) Check heating element(s). Replace as
needed.
2) Check all wire connections.
3) Check Power Switch Module operation.
Replace as needed.
1) Reduce temperature setting.
2 Check upper temperature sensor, ensure
good contact with tank.
3) Check heating element(s). Replace as
needed.
4) Check Power Switch Module operation.
Replace as needed.
5) Replace with larger water heater.
1) Remove and clean heating elements.
Replace as needed.