Warnings And Faults; Fault Codes; Warnings And Fault Codes - IBC DC 23-84 Installation And Operating Instructions Manual

5.3.1 Warning Codes
During operation the controller can detect unusual situations and can take action to avoid damage to the heat
exchanger or other unsafe operations. During these situations the controller will limit the temperature and power
output of the burner, or temporarily disable operation entirely.
These warnings are shown flashing and visible on the main display, and only displayed when an unusual reading is
currently detected.
MAIN DISPLAY
E1
[pressure] P
POLE

5.3.2 Fault codes

If the fault LED is flashing, the controller has detected a fault. A fault code will be displayed on the main display. Once
the fault has been corrected the burner controller can be restarted. Press the Reset
to restart the burner controller.
MAIN DISPLAY DISPLAY FAULT
10, 11, 12, 13, 14 Sensor fault S1
Supply Sensor (upper left side of
the heat exchanger)
20, 21, 22, 23, 24 Sensor fault S2
Return Sensor (lower left side of
the heat exchanger)
0 Sensor fault after self check
1 Temperature too high
2 S1 and S2 interchanged
TROUBLESHOOTING
DC SERIES COMBI BOILERS DC 23-84, DC 29-106, DC 33-124, DC 33-160

5.3 WARNINGS AND FAULTS

DISPLAY FAULT
Flue gas temperature approaching limit
CH Pressure too low
Polarity detection fault
POSSIBLE SOLUTION
•
Supply water temperature too high
•
Ambient temperature too high
•
Check positioning of flue gas sensor
•
Heat exchanger front panel loose, check bolt torque
•
Check heat exchanger for contamination or debris
•
Replace flue gas temperature sensor
•
Bring the system back up to pressure
•
Check pressure sensor
•
Replace pressure sensor
•
Switch the Line and Neutral wire on the power supply
•
Check grounding
•
Check for high potential on Neutral wire
•
Replace controller
POSSIBLE SOLUTION
•
Air in heating system. Bleed the system of any remaining air
•
Check the positioning of S1
•
Check wiring for break
•
Replace S1
•
Check the positioning of S2
•
Check wiring for break
•
Replace S2
Replace S1 and/or S2
•
Air in system. Bleed the system of any remaining air
•
Pump not running, check and/or replace the pump
•
Insufficient flow in installation, radiators closed
•
Check wiring harness
•
Replace S1 or S2
button on the operating panel
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