IBC HC Series Installation And Operating Instructions Manual page 63

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
No flame signal
4
Poor flame signal
5
6 Flame detection fault
8 Incorrect fan speed
18 Flue Gas Temperature Sensor
Open – Lockout Condition
19 Flue Gas Temperature Sensor
Short – Lockout Condition
29,30 Gas valve relay faulty
TROUBLESHOOTING
HC SERIES BOILERS HC 13-50, HC 23-84, HC 29-106, HC 20-125, HC 33-160
POSSIBLE SOLUTION
•
See below, 1 – Temperature too high
•
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
•
Gas valve closed
•
Gas supply pressure too low or drooping under load
•
Gas valve or ignition unit not powered
•
No or incorrect ignition gap
•
Condensate drain blocked
•
Check grounding of all parts
•
Condensate drain blocked
•
Gas supply pressure too low or drooping under load
•
Check ignitor and ignition cable
•
Check gas valve adjustment
•
Check grounding of all parts of the installation
•
Check combustion air supply and flue gas exhaust piping and
terminations, possible flue gas recirculation in the system
•
Replace ignition cable + ignitor cap
•
Replace ignition module
•
Replace controller
•
Fan rubbing on casing
•
Wiring between fan and casing
•
Check wiring for poor wire contact
•
Replace fan
•
Replace controller
•
Inspect heat exchanger for fouling and clean as required
•
Check wiring
•
Replace Sensor
•
Inspect heat exchanger for fouling and clean as required
•
Check wiring
•
Replace Sensor
Replace controller
button on the operating panel
5-7