Utica Dunkirk E14 Error Code
5 burner start-up failures that the air inlet and exhaust flue are not blocked C
Source: dmg-240__utdu-dmg-240-iom.pdf
What does Utica Dunkirk E14 mean?
E14 on the Utica-Dunkirk DMG-240 condensing boiler means the burner failed to ignite on five consecutive start attempts. After the fifth failed ignition sequence, the boiler enters lockout and displays E14. Each start attempt involves the spark electrode firing for up to 5 seconds; if no flame is proven within that window, the attempt counts as a failure.
Symptoms
- Audible spark clicks heard but no burner ignition during start sequence
- Boiler display shows E14 after multiple ignition attempts
- Boiler enters hard lockout and will not restart without manual reset
- Gas odor may be faint if gas is reaching the burner but not igniting
Common causes
- Gas supply shut off or insufficient pressure at the appliance
- Air in the gas supply line (after maintenance or new installation)
- Contaminated, cracked, or mispositioned spark or ionization electrode
- Blocked air inlet or flue duct preventing proper combustion
- Defective SU PCB spark generator circuit
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Diagnostic steps
Confirm gas supply is open and pressurized
Verify the manual isolation valve is open and check gas pressure at the inlet test port. Natural gas minimum is 3.5" w.c.; confirm no service interruption at the meter.
Inspect the spark and ionization electrode
Remove the electrode assembly and inspect for cracks in the ceramic insulator, carbon bridging, or incorrect gap. Clean with fine emery cloth and reset the gap per IOM specifications.
Check air inlet and flue are unobstructed
Inspect both the combustion air inlet and flue terminal for blockage by debris, ice, bird nests, or poor installation clearances that prevent adequate combustion air.
Purge air from the gas supply line
If the installation is new or gas was recently interrupted, purge air from the supply by cracking a union downstream of the meter, then reseal and retry ignition.
Reset the boiler and attempt restart
Press and hold the RESET button for 2 seconds. If spark is present but no gas ignites, the gas valve, PCB spark circuit, or burner assembly requires further diagnosis.
When to call a professional
Call a licensed technician if E14 recurs after confirming gas supply and cleaning the electrode. A defective gas valve, failed SU PCB, or burner assembly issue requires diagnostic tools and gas-fitting certification to repair safely. Multiple failed ignition attempts can introduce unburned gas into the boiler — do not continue resetting without identifying and correcting the root cause.
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Other Utica Dunkirk Error Codes
,E28,E40,E50,E160,E321,and E431 -Indicate possible faulty components. 53 - Indic
, 78 and 92 - Indicates possible wrong calibration, a new calibration is needed.
,E135 - Indicate the gas supply has been interrupted, ignition has failed or fla
,E 133, E 134,E 135, E 09,E 15,E 128 and E 384 - are displayed it is possible to
Gas Valve Connection Cable 日 10 External Probe Fault 12 Water Flow Switch Open 1
Water Refill Enabled E 19 Max Time Of Water Refill 20 Central Heating Flow NTC F
Flue NTC Fault E40 Central Heating Return NTC Fault Hot Water NTC Fault (tank ve
PCB to be set by the "Calibration Function" E 171 Fan parameter Out of range in
87 Communication error E92 Combustion test alarm during auto-setting E 1 109 Pre
E11 between the supply and return temperatures too Sensor not/poorly connected N
Temperature of heat exchanger is above the normal range (high- limit thermostat
False flame signal Ignition transformer defective Gas valve defective valve and
Sources: dunkirk.com