Westinghouse WBRCNG140W Installation Manual page 48

Gas fired residential combi boiler
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Error Code
Error Code Description
Er:29
APS Open
DHW Sensor Open or
Er:32
Short
CH Temperature Sensor
Er:33
Open or Short
Exhaust Sensor Open or
Er:35
Short
Er:36
Abnormal Supply Voltage
Abnormal Supply
Er:37
Frequency
Error Appears When
Er:38
Control Stores Data, but
Data is not Saved
Gas Leakage is Detected
for Greater than 5
Er:40
seconds, or three times
within 10 minutes
Fan Speed too High with
Er:41
Flame On
Jumped Wire
Er:42
Disconnected
Burner Overheat Switch
Er:43
Open
Fan Speed Feedback
Er:61
Signal Abnormal
1. Check APS and connections.
2. If APS is open, replace the switch.
3. If APS is closed and connections are secure, check switch resistance. If resistance is zero, replace
the switch.
4. Check condensate line and termination for blockages.
5. Check exhaust vent for blockages.
6. Press the Power button to clear the Error Code and restart appliance.
7. If the problem persists, replace the main control.
This Error Code will go away when outlet DHW temperature decreases.
If Error happens again:
1. Check DHW outlet temperature sensor. Ensure connections are secure.
2. Check sensor resistance. If resistance is zero, replace the sensor.
3. If the problem persists, replace the main control.
This Error Code will go away when CH temperature decreases.
If Error happens again:
1. Check CH temperature sensor. Ensure connections are secure.
2. Check CH sensor resistance. If resistance is zero, replace the sensor.
3. If the problem persists, replace the main control.
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.
Supply voltage is too low to operate. This Error Code will go away when supply voltage returns to
normal operating range.
If Error happens again:
1. Ensure appliance is properly wired to a power source meeting the requirements on the rating plate.
2. If problem persists, replace the main control.
Supply frequency is too high to operate. This Error Code will go away when supply frequency returns
to normal operating range.
If Error happens again:
1. Ensure appliance is properly wired to a power source meeting the requirements on the rating plate.
2. If problem persists, replace the main control.
Press the Power button to clear the Error Code.
Replace the main control.
IMPORTANT: If you smell gas, STOP! Follow the instructions on page 2, this manual, and call a
qualified service technician or the fuel gas utility.
Press the Power button to clear the Error Code.
If Error happens again:
1. Check the appliance cover. Ensure it is secure.
2. Check gas connections for leakage with a soapy solution. Fix any leaks.
3. Check condition of the burner assembly.
4. 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 high, replace the fan.
4. If the problem persists, replace the main control.
Press the Power button to clear the Error Code.
If Error happens again:
1. Ensure the jumped wire is properly connected.
2. 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.
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 AC8V~26.5V power at the fan
connection. If AC8V~26.5V power is present at the control, replace the fan. If the blower does not
have AC8V~26.5V power, check power at the control. If AC8V~26.5V power is not present at the
control, replace the control.
3. If the problem persists, replace the main control.
Possible Remedies
48
WHL-012 REV. 12.17.14

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