whl-648 Rev. 001 Rel. 003 Date 10.8.19
52
Part 10 - Troubleshooting
A. Error Code
When the boiler encounters an error, the display will flash “Er” followed by a numerical code. The boiler shall enter a soft lockout condition
if the error is such that it can return to normal operation once the condition relieves itself (overheat conditions, NTC open or shorts, etc.).
The boiler shall enter a hard lockout if the condition indicates something more serious (flame, ignition, condensate line, etc.) To clear a hard
lockout Error Code, press the Power button. See Figure 49.
The following screen will display when the boiler encounters an error.
Figure 49 - Error Screen
Error Code
Error Code
Description
Possible Remedies
Er:10
Flame has extin-
guished 5 (five) times
Press the Power button to clear the Error Code. The Code will also automatically reset after one hour (up to three
(3) times.
If Error happens again:
1. Monitor the gas pressure to the boiler while in operation. Ensure pressure is between 3.5 and 14” WC.
2. Check gas valve wire. Ensure connection is secure.
3. Check flame detection sensor. Ensure connections are secure. Normal operating settings are more than 2.5DC
before ignition, less than 2.5DC after ignition.
4. Check vent terminations. Ensure there are no blockages.
5. Assure that the flame is stable when lit.
6. If the problem persists, replace the main control.
Er:11
Ignition has failed 5
(five) times
Press the Power button to clear the Error Code. The Code will also automatically reset after one hour (up to three
(3) times.
If Error happens again:
1. Monitor the gas pressure to the boiler while in operation. Ensure pressure is between 3.5 and 14” WC.
2. Check gas valve wire. Ensure connection is secure.
3. Check flame detection sensor. Ensure connections are secure. Normal operating settings are more than 2.5DC
before ignition, less than 2.5DC after ignition.
4. Check igniter transformer for proper connection.
5. Clean the spark igniter with steel wool to remove oxides. Ensure proper separation (3-4 mm).
6. Replace the spark igniter if damaged.
7. Assure that the flame is stable when lit.
8. If the problem persists, replace the main control.
Er:16
Operating
Temperature Sensor
Detects Water
Temperature Greater
than 203
o
F (95
o
C)
This Error Code will go away when the DHW temperature decreases.
If Error happens again:
1. Check if dip switch High Fire setting is ON. Switches 6 and 7 should be OFF for normal operation.
2. Check if DHW inlet pipe is blocked. Ensure there is enough water flowing to the boiler.
3. Check DHW sensor at DHW outlet. If resistance is zero, replace the sensor.
4. Check Operating Temperature sensor at the heat exchanger. If resistance is zero, replace the sensor.
5. If the problem persists, replace the main control.
NOTE: During the error state, the pump will operate to cool the boiler until the temperature is below 192
o
F.
Er:20
Condensate - Closed is
Normal, Open is Fault
(Condensate Drain
Trap
Press the Power button to clear the Error Code.
1. Check Condensate and main controller connections. Ensure all are secure.
2. Check Condensate resistance. If resistance is not zero, replace the switch.
3. Check Condensate hose. Ensure it is connected and in good condition.
4. Check condensate line and termination for blockages.
5. Check exhaust vent for blockages.
6. If the problem persists, replace the main control.
Er:28
Overheat Sensor Open
or Short
This Error Code will go away when CH temperature decreases.
If Error happens again:
1. Check overheat temperature sensor. Ensure connections are secure.
2. Check overheat sensor resistance. If resistance is zero, replace the sensor.
3. If the problem persists, replace the main control.
Er:29
APS - Closed is Normal,
Open is Fault
Press the Power button to clear the Error Code.
1. Check APS and main controller connections. Ensure all are secure.
2. Check APS resistance. If resistance is not zero, replace the switch.
3. Check APS hose. Ensure it is connected and in good condition.
4. Check condensate line and termination for blockages.
5. Check exhaust vent for blockages.
6. If the problem persists, replace the main control.
Summary of Contents for WBRC 140 Series
Page 21: ...whl 648 Rev 001 Rel 003 Date 10 8 19 21 E Applications Figure 10 Piping Symbol Legend ...
Page 40: ...whl 648 Rev 001 Rel 003 Date 10 8 19 40 Figure 33 Electrical Wiring Diagram ...
Page 41: ...whl 648 Rev 001 Rel 003 Date 10 8 19 41 Figure 34 Ladder Diagram ...
Page 81: ...whl 648 Rev 001 Rel 003 Date 10 8 19 81 Notes ...
Page 82: ...whl 648 Rev 001 Rel 003 Date 10 8 19 82 This Page Intentionally Left Blank ...
Page 83: ...whl 648 Rev 001 Rel 003 Date 10 8 19 83 This Page Intentionally Left Blank ...
