Westinghouse WGR050NG076 Installation Instructions Manual page 52

F14 Tank Sensor Data Not Consistent
F21 ADC Failure
F31 Dual Temperature Sensor B Error
F35 Dual Temperature Sensor A Error
F82 Unstable Flame Lockout
Table 18 – Lockout Fault Codes – NOTE:
or four times to assure the fault has been resolved.
The data received from the tank
sensors exceeds the difference
allowed by the control.
The ADC test has detected a major
fault in the electronic components.
Dual Temperature Sensor B is out of
normal operating range, meaning the
sensor is either open or shorted.
Dual Temperature Sensor A is out of
normal operating range, meaning the
sensor is either open or shorted.
The control detects an unstable
flame.
If you replace a part to remedy a fault, it is recommended that you cycle the unit at least three
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
1. Manually reset the water heater.
2. Observe water heater operation.
3. If fault code occurs again, replace the controller.
1. Manually reset the water heater.
2. Observe water heater operation.
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 B
of the Dual Temperature Sensor. Values should be close
to those given in Table 14
5. Replace Dual Temperature Sensor if either Sensor B
fails the resistance test.
1. Manually reset the water heater.
2. Observe water heater operation.
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
of the Dual Temperature Sensor. Values should be close
to those given in Table 14
5. Replace Dual Temperature Sensor if either Sensor A
fails the resistance test.
1. Manually reset the water heater.
2. Observe water heater operation.
3. If fault code occurs again check for stable gas pressure.
4. check Ignitor cable connections
5. Check Ignitor cable ground
6. Replace cable
7. Replace ignitor
52
WHL-001 REV. 9.3.14