Bradford White EFR-1-60T1206EN Installation & Operating Manual page 67

Step 6:
Continue pressing the "Temperature Down" button to change to the next error code index and press "Select" to view the
error code number, if any, for that index number. Continue on to index #1, the oldest error code index. The water heater
display will store up to 10 error codes with the oldest code starting in code index #1 with the most recent code in code
index #10.
Step 7: 10 seconds after the last button press, the Water Heater Display will revert back to the current error code display.
To exit Service Mode, either wait 30 seconds or press Temperature Up button and Select Button for 3 seconds.
DIAGNOSTIC ERROR CODES AND TROUBLESHOOTING PROCEDURES FOR EF MODELS WITH HONEYWELL
INTEGRATED DIRECT SPARK IGNITON CONTROL SYSTEM
Error
Definition of Code
Code
No code –
blank
display
Low Flame Sense
4
Current
Flame Sensed Out of
Normal Sequence
6 (Before Opening Gas
Valve or After
Closing Gas Valve)
Flame Detected
23
Before Ignition
Flame Detected After
24 Heating Cycle
Completes
idle
Status Operational
SELECT
Exiting Service Mode
Cause of Problem and Actions Taken to Correct
Check power supply to the water heater. Make sure water heater is plugged in
and the breaker is on. Check if there is 120 volts power supply to the LINE
connections on the control board. If 120 volts is present, check for 24 volts
output to SECONDARY terminals on the Control Board. Check for loose wires,
defective transformer. Check wire harness connections from display to the
control board.
Determine flame sense current in the Service Mode with the water heater
operating. If less than 4.0 microamps, check burner flame sense rod and wire.
Clean flame sense rod with emery cloth. If problem is not solved, check for
debris clogging burner or replace flame sense rod.
Check to make sure gas valve has closed. No voltage should be present at the
gas valve before or after ignition cycle. Make sure wire positions on the wire
harness are correct. If gas valve is stuck open, replace.
Check to make sure gas valve has closed. No voltage should be present at the
gas valve before the ignition cycle. Make sure wire positions on the wire
harness are correct. If gas valve is stuck open, replace.
Check to make sure gas valve has closed. No voltage should be present at the
gas valve before the ignition cycle. Make sure wire positions on the wire
harness are correct. If gas valve is stuck open, replace.
67
setpoint
°F
SET