Westinghouse WGRT 150 Series Installation Start-Up Maintenance Parts page 58

Error Code Error Code Description
Exhaust Sensor Open or
Er:35
Short
Error Appears When
Er:38 Control Stores Data, but
Data is not Saved
Flame Detected after
Er:39 Exiting a Flame On
Condition
Fan Speed too High with
Er:41
Flame On
Flue APS – Closed is
Er:42 Normal, Open is Fault
(Condensate Drain Trap)
Burner Overheat Switch
Er:43
Open
Water Leak
Er:45
(150 Models ONLY)
Fan Speed Feedback
Er:61
Signal Abnormal
Er:65 Supply Water Valve Error
Er:66 Mixing Valve Error
Er:67 AGM Error
Register, Ram, Rom, I/O
Port, AD Abnormal,
Er:70
Important EPROM Data
or Safe Data Abnormal
This Error Code will go away when exhaust temperature decreases.
If Error happens again:
1. Check exhaust temperature sensor. Ensure connections are secure.
2. Check sensor resistance. If resistance is zero, replace the sensor.
3. Check exhaust vent for blockage.
4. If the problem persists, replace the main control.
Press the Power button to clear the Error Code.
Replace the main control.
This Error Code will go away when the false flame condition is remedied.
If Error happens again:
1. Check the water heater cover. Ensure it is secure. Flame detection sensor can detect an external
light source.
2. Check flame detection sensor. Ensure connections are secure. Normal operating settings are more
than 2.5DC before ignition, less than 2.5DC after ignition.
3. If the problem persists, replace the main control.
Press the Power button to clear the Error Code.
If Error happens again:
1. Check the vent connections for blockages.
2. Check the burner assembly.
3. Check fan operation. If fan appears to be operating normally but RPMs are too low or too high,
replace the fan.
4. If the problem persists, replace the main control.
Press the Power button to clear the Error Code.
1. Check FLUE APS and main controller connections. Ensure all are secure.
2. Check FLUE APS resistance. If resistance is zero, replace the switch.
3. Check FLUE APS hose. Ensure it is connected and in good condition.
4. Check exhaust vent for blockages.
5. If the problem persists, replace the main control.
Press the Power button to clear the Error Code.
If Error happens again:
1. Check burner overheat switch connections. Ensure connections are secure.
2. Check switch resistance. If resistance is zero, replace the switch.
3. If the problem persists, replace the main control.
1. Turn power off to water heater.
2. Valve off the water heater to isolate it from the system.
3. Call a qualified service technician to diagnose and repair the source of the leak.
This Error Code will go away when the condition is remedied.
If Error happens again:
1. Check the connections to the fan. Ensure all are secure.
2. If the fan does not rotate during the ignition sequence, check for 120V power at the fan connection. If
120V power is present at the control, replace the fan. If the blower does not have 120V power, check
power at the control. If 120V power is not present at the control, replace the control.
3. If the problem persists, replace the main control.
Press the Power button to clear the Error Code.
If Error happens again:
1. Turn power OFF and ON at the main power switch internal to the water heater.
2. Check wiring connections to supply water valve. Ensure all are secure.
3. Replace supply water valve.
4. If the problem persists, replace the main control.
Press the Power button to clear the Error Code.
If Error happens again:
1. Turn power OFF and ON at the main power switch internal to the water heater.
2. Check wiring connections to mixing valve. Ensure all are secure.
3. Replace mixing valve.
4. If the problem persists, replace the main control.
Press the Power button to clear the Error Code.
If Error happens again:
1. Turn power OFF and ON at the main power switch internal to the water heater.
2. Ensure fan inlet hole is completely open after turning the power OFF and ON.
3. Check wiring connections to the AGM. Ensure all are secure.
4. Check AGM operation.
5. Replace AGM components.
6. If the problem persists, replace the main control.
This Error Code will go away when the condition is remedied.
If Error happens again:
1. Turn power OFF and ON at the main power switch internal to the water heater.
2. If the problem persists, replace the main control.
Possible Remedies
58
WHL-004 REV. 5.26.17