Westinghouse WGR050LP076, Installation Instructions Manual

Page: 51 / 60

51
WHL-001 REV. 9.3.14
CONTROL BOARD LOCKOUT FAULTS
CODE SHORT DESCRIPTION LONG DESCRIPTION CORRECTIVE ACTION
F01 Ignition Lockout Indication
The control senses no flame after
three ignition attempts. 1. Is the gas turned on to the water heater?
2. Manually reset the water heater.
3. Observe water heater operation. If fault code occurs
again
4. Check for stable gas pressure.
5. Check Ignitor cable connections.
6. Check Ignitor cable gound.
7. Replace cable.
8. Check spark gap between spark electrode and burner.
9. Replace ignitor.
F02 False Flame Indication
The control senses a flame signal
when there is no heat demand. 1. Visually check for flame through sight glass.
2. Manually reset the water heater.
3. Observe water heater operation. If fault code occurs
again
4. Check Ignitor cable connections
5. Check Ignitor cable gound
6. Replace cable
7. Replace ignitor
F03
High Limit Temperature
Protection
The control shuts down the water
heater after it has met / surpassed
the high temperature limit. 1. Manually reset the water heater.
2. Observe water heater operation. If fault code occurs
again
3. Check the Dual Temperature Sensor. Ensure it is
properly wired to the control, and that there are no
breaks, cuts, or other visible issues with the sensor wire.
4. Use an ohmmeter to check resistance on first Sensor A,
then Sensor B of the Dual Temperature Sensor.
5. Replace Dual Temperature Sensor if either Sensor A or
Sensor B fails the resistance test.
F05 Incorrect Fan Speed
The control detects incorrect fan
speed. 1. Manually reset the water heater.
2. Observe water heater operation. If fault code occurs
again
3. Check condition of wiring
4. Check Fan PWM connections at control board and fan
5. Replace fan
F07 Vent Temperature Too High
The vent temperature has met /
surpassed the maximum limit. This is
first an E07 blocking error code. If
vent temperature has not returned to
normal levels within 15 minutes, this
becomes an F07 lockout fault code. 1. Manually reset the water heater.
2. Observe water heater operation. If fault code occurs
again
3. Replace sensor
4. Measure actual vent temperature.
F08 Flame Circuit Failure
The control detects an incorrect
flame level. 1. Manually reset the water heater.
2. Observe water heater operation. If fault code occurs
again
3. Check Ignitor cable connections
4. Check Ignitor cable gound
5. Replace cable
6. Check spark gap between spark electrode and burner.
7. Replace ignitor
F09 Valve Feedback Error
The gas valve does not respond to
controller demands. 1. Manually reset the water heater.
2. Observe water heater operation. If fault code occurs
again, reset the water heater and:
3. When water heater attempts to fire, check voltage at the
gas valve connector. If there is voltage, but no gas
pressure on the outlet side of the valve, the valve is stuck
closed. Replace the gas valve.
4. If there is no voltage at the ignition phase, replace the
control board.
F12 EEPROM Integrity Lockout
The EEPROM check fails. EEPROM
data is corrupted. 1. Manually reset the water heater.
2. Observe water heater operation.
3. If fault code occurs again, replace controller.