Westinghouse WBRC 140 Series Installation, Start-Up, Maintenance, Parts, Warranty page 53

Error Code
Error Code
Description
Return Temperature
Er:31
Sensor Open or Short
DHW Sensor Open or
Er:32
Short
CH Temperature Sen-
Er:33
sor Open or Short
Exhaust Sensor Open
Er:35
or Short
Abnormal Supply
Er:36
Voltage
Abnormal Supply
Er:37
Frequency
Error Appears When
Er:38
Control Stores Data,
but Data is not Saved
Fan Speed too high
Er:41
with flame on
Jumped wire discon-
Er:42
nected
Burner overheat switch
Er:43
open
Fan Speed Feedback
Er:61
Signal Abnormal
Mixing Valve Initial
Value Error
Er:66
(Mixing Valve Cannot
Return to Initial Posi-
tion)
This Error Code will go away when operating temperature decreases.
If Error happens again:
1. Check return temperature sensor. Ensure connections are secure.
2. Check return 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 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 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 high to operate. This Error Code will go away when supply voltage returns to normal
operating range.
If Error happens again:
1. Ensure boiler 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 boiler 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.
The Error Code will go away unless it occurs five (5) times in ten (10) minutes. 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.
If Error happens again:
1. Ensure that the jumper wire is installed and 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 not zero, replace the switch.
3. If the problem persists, replace the main control.
NOTE: During the error state, the fan will operate to cool the burner until the switch closes.
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 8Vac 26.5Vac power at the fan connection.
If 8Vac 26.5Vac power is present at the control, replace the fan. If the blower does not have 8Vac 26.5Vac power,
check power at the control. If 8Vac 26.5Vac power is not present at the control, replace the control.
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. Turn power OFF and ON at the main power switch internal to the boiler.
2. Check wiring connections to mixing valve. Ensure all are secure.
3. Replace mixing valve.
4. If the problem persists, replace the main control.
Possible Remedies
whl-648 Rev. 001 Rel. 003 Date 10.8.19
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