New Yorker Boiler · Error codes
New Yorker Boiler error codes and alerts
Identical code numbers can mean different things on different controllers, so every entry is tied to the documented series, controller and manual version. A code is never a diagnosis.
If you smell gas
- Stop what you are doing. Do not use phones, switches, matches or anything that can spark inside.
- Go outside and leave the door open behind you.
- Call the FortisBC 24-hour emergency line at 1-800-663-9911 or dial 911.
Only after that, call ROMA about the boiler. Official guidance: FortisBC gas leaks and odour.
New Yorker GHE-II condensing heating boilers (H/E fault codes, I&O 110330-07 Table 18-5)
H01
Anti-Short Cycle. The boiler cycled off too quickly while a thermostat demand was present and restart is delayed, an urgent calibration dema…
Details
H02
Safety Limit Open. A safety limit is open and preventing the boiler from starting; listed causes are an external limit open (or its jumper m…
Details
H04
Supply High Limit. Supply temperature is higher than 200F (93C), or the preferred outlet/flow high limit minus 10 degrees when one is used, …
Details
E04
Supply High Limit. Supply temperature is higher than 210F (99C), or the preferred outlet/flow high limit, which locks the boiler out; listed…
Lockout
H05
Low Water Flow. The temperature rise between supply and return is greater than 63F (17C), or the boiler water flow switch does not detect wa…
Details
E05
Low Water Flow. The boiler water flow switch still does not detect water flow after 5 retries, the temperature rise between supply and retur…
Lockout
H06
Flue High Limit. The flue sensor detected temperatures in excess of 194F (90C), or the preferred stack/flue limit minus 10 degrees when one …
Details
E06
Flue High Limit. The flue sensor detected temperatures in excess of 204F (96C), or the preferred stack/flue limit when one is used, which lo…
Lockout
H07
Return Temp Higher than Supply. The return temperature is higher than the supply temperature, so the boiler holds; listed causes are flow th…
Details
E07
Return Temp Higher than Supply. The return temperature is higher than the supply temperature, which locks the boiler out; listed causes are …
Lockout
H08
Return Sensor Fault. The return temperature sensor is shorted, open or miswired, so the boiler holds. The table classifies it as Hold.…
Details
H09
Supply Sensor Fault. The supply temperature sensor is shorted, open or miswired, so the boiler holds. The table classifies it as Hold.…
Details
E09
Supply Sensor Fault. The supply temperature sensor is shorted, open or miswired for longer than 10 seconds, or the temperature difference be…
Lockout
H11
Flue Sensor Fault. The flue temperature sensor is shorted, open or miswired, so the boiler holds. The table classifies it as Hold.…
Details
E11
Flue Sensor Fault. The flue temperature sensor is shorted, open or miswired for longer than 10 seconds, which locks the boiler out. The tabl…
Lockout
H12
Outdoor Air Sensor Fault. The outdoor air temperature sensor is shorted, open or miswired; this is a warning and the boiler continues to ope…
Details
H13
Header Sensor Fault. The header or recirculation temperature sensor is shorted, open or miswired, so the boiler holds. The table classifies …
Details
H14
0-10 Vdc / 4-20 mAdc Input Fault. The 0-10 Vdc or 4-20 mAdc input is out of range or the analog input parameter setup is incorrect, so the b…
Details
E15
Air Proving Switch (APS) Defective (failed to open). The air proving switch failed to open: its contact is closed when it should be open, th…
Lockout
H16
Low Combustion Air Flow. The air proving switch is not connected to the harness, its tube is disconnected or obstructed, the switch is defec…
Details
E16
Low Combustion Air Flow. The air proving switch does not detect airflow for more than 51 seconds, fan standstill is not reached, or fan spee…
Lockout
H17
Invalid Safety Parameters. The control is in program mode, the boiler type and BCC mismatch, or the fuel or altitude selection is invalid or…
Details
E17
Invalid Safety Parameters. An internal safety core error, an application parameter that does not match the safety core parameter, or a missi…
Lockout
H18
Invalid Application Parameters. Application parameters are not valid, the actual boiler model does not match the model detected during facto…
Details
E18
Invalid Application Parameters. Application parameters are not valid following a parameter download, or the selected boiler model default pa…
Lockout
E19
Flame Signal Fault during Run. The flame signal deviated from the setpoint too high during run, which locks the boiler out; the listed cause…
Lockout
H20
Flame Signal Fault during Calibration. The flame signal deviated from the setpoint too high during calibration, which is a warning. The tabl…
Lockout
E20
Flame Signal Fault during Calibration. The flame signal was too low or too high during calibration, the calibration result differed too much…
Lockout
H21
Fuel Gas Fault. The flame signal deviated from the setpoint too high at a specific firing rate, or the gas valve is defective, so the boiler…
Lockout
E21
Fuel Gas Fault. The flame signal deviated from the setpoint too high after a second occurrence, or the gas valve wiring has a problem, which…
Lockout
H22
No Flame After Ignition. The flame signal was too low at burner start after the first four unsuccessful attempts, with a one-hour hold after…
Lockout
E22
No Flame After Ignition. The flame signal was too low at burner start after the fifth unsuccessful attempt, which locks the boiler out. The …
Lockout
H23
Flame Out Of Sequence. The flame amplifier is defective, so the boiler holds; the listed causes are a blocked condensate trap, a defective g…
Details
E23
Flame Out Of Sequence. A flame was detected before burner start or for 15 seconds after the gas valve closed, or the flame amplifier is defe…
Lockout
H24
Flame Loss During Run. The flame signal was lost in operation (minimum firing rate raised for 1 hour) or in the stabilization phase, so the …
Lockout
E24
Flame Loss During Run. The flame signal was lost in the safety time after a second occurrence, which locks the boiler out. The table classif…
Lockout
H25
Hardware Fault. The control reported an internal safety core error, so the boiler holds; a defective control is the listed cause. The table …
Details
E25
Hardware Fault. The control reported an internal application core or safety core error, which locks the boiler out; a defective control is t…
Lockout
H26
Calibration Fault. Calibration could not proceed: stable conditions to perform gas valve offset adaptation or calibration were not reached, …
Details
E26
Calibration Fault. Calibration is missing and the calibration counter reached zero, which locks the boiler out. The table classifies it as L…
Lockout
H27
120 VAC Supply Fault. The 120 VAC supply voltage is less than 73 VAC, so the boiler holds. The table classifies it as Hold.…
Details
H28
24 VAC Supply Fault. The control 24 VAC frequency is wrong or there is high electrical noise, so the boiler holds; a defective control is th…
Details
E29
Excessive Reset Selection. The reset button has been selected too often, which locks the boiler out; clear it by cycling power to the contro…
Lockout
H30
Sequencer Fault. Sequencer fault: duplicate slave boiler addresses, loss of communication between a sequencer slave and the master (or maste…
Details
H31
Variable Speed Pump Fault. The variable speed pump feedback faulted, so the boiler holds; the listed causes are wiring to the variable speed…
Details
H32
Zone Panel Fault. Zone panel communication was lost, zone panel electronics failed, or a duplicate zone panel was detected, which is a warni…
Details
New Yorker GHE-II Combi condensing boilers (H/E fault codes, I&O 110329-10 Table 19-5)
H01
Anti-Short Cycle. The boiler cycled off too quickly while a thermostat demand was present and restart is delayed, or an urgent calibration d…
Details
H02
Safety Limit Open. A safety limit is open and preventing the boiler from starting; listed causes are an external limit open (or its jumper m…
Details
H04
Supply High Limit. Supply temperature is higher than 200F (93C), or the preferred outlet/flow high limit minus 10 degrees when one is used, …
Details
E04
Supply High Limit. Supply temperature is higher than 210F (99C), or the preferred outlet/flow high limit, which locks the boiler out; listed…
Lockout
H05
Low Water Flow. The temperature rise between supply and return is greater than 63F (17C), or the boiler water flow switch does not detect wa…
Details
E05
Low Water Flow. The boiler water flow switch still does not detect water flow after 5 retries, the temperature rise between supply and retur…
Lockout
H06
Flue High Limit. The flue sensor detected temperatures in excess of 194F (90C), or the preferred stack/flue limit minus 10 degrees when one …
Details
E06
Flue High Limit. The flue sensor detected temperatures in excess of 204F (96C), or the preferred stack/flue limit when one is used, which lo…
Lockout
H07
Return Temp Higher than Supply. The return temperature is higher than the supply temperature, so the boiler holds; listed causes are flow th…
Details
E07
Return Temp Higher than Supply. The return temperature is higher than the supply temperature, which locks the boiler out; listed causes are …
Lockout
H08
Return Sensor Fault. The return temperature sensor is shorted, open or miswired, so the boiler holds. The table classifies it as Hold.…
Details
H09
Supply Sensor Fault. The supply temperature sensor is shorted, open or miswired, so the boiler holds. The table classifies it as Hold.…
Details
E09
Supply Sensor Fault. The supply temperature sensor is shorted, open or miswired for longer than 10 seconds, or the temperature difference be…
Lockout
H10
DHW Sensor Fault. The DHW temperature sensor is shorted, open or miswired, so the boiler holds. The table classifies it as Hold.…
Details
H11
Flue Sensor Fault. The flue temperature sensor is shorted, open or miswired, so the boiler holds. The table classifies it as Hold.…
Details
E11
Flue Sensor Fault. The flue temperature sensor is shorted, open or miswired for longer than 10 seconds, which locks the boiler out. The tabl…
Lockout
H12
Outdoor Air Sensor Fault. The outdoor air temperature sensor is shorted, open or miswired; this is a warning and the boiler continues to ope…
Details
H13
Header Or Recirculation Sensor Fault. The header or recirculation temperature sensor is shorted, open or miswired, or Recirculation (Comfort…
Details
H14
0-10 Vdc / 4-20 mAdc Input Fault. The 0-10 Vdc or 4-20 mAdc input is out of range or the analog input parameter setup is incorrect, so the b…
Details
E15
Air Proving Switch (APS) Defective (failed to open). The air proving switch failed to open: its contact is closed when it should be open, th…
Lockout
H16
Low Combustion Air Flow. The air proving switch is not connected to the harness, its tube is disconnected or obstructed, the switch is defec…
Details
E16
Low Combustion Air Flow. The air proving switch does not detect airflow for more than 51 seconds, fan standstill is not reached, or fan spee…
Lockout
H17
Invalid Safety Parameters. The control is in program mode, the boiler type and BCC mismatch, or the fuel or altitude selection is invalid or…
Details
E17
Invalid Safety Parameters. An internal safety core error, an application parameter that does not match the safety core parameter, or a missi…
Lockout
H18
Invalid Application Parameters. Application parameters are not valid, the actual boiler model does not match the model detected during facto…
Details
E18
Invalid Application Parameters. Application parameters are not valid following a parameter download, or the selected boiler model default pa…
Lockout
E19
Flame Signal Fault During Run. The flame signal deviated from the setpoint too high during run, which locks the boiler out; the listed cause…
Lockout
H20
Flame Signal Fault During Calibration. The flame signal deviated from the setpoint too high during calibration, which is a warning. The tabl…
Lockout
E20
Flame Signal Fault During Calibration. The flame signal was too low or too high during calibration, the calibration result differed too much…
Lockout
H21
Fuel Gas Fault. The flame signal deviated from the setpoint too high at a specific firing rate, or the gas valve is defective, so the boiler…
Lockout
E21
Fuel Gas Fault. The flame signal deviated from the setpoint too high after a second occurrence, or the gas valve wiring has a problem, which…
Lockout
H22
No Flame After Ignition. The flame signal was too low at burner start after the first four unsuccessful attempts, with a one-hour hold after…
Lockout
E22
No Flame After Ignition. The flame signal was too low at burner start after the fifth unsuccessful attempt, which locks the boiler out. The …
Lockout
H23
Flame Out Of Sequence. The flame amplifier is defective, so the boiler holds; the listed causes are a blocked condensate trap, a defective g…
Details
E23
Flame Out Of Sequence. A flame was detected before burner start or for 15 seconds after the gas valve closed, or the flame amplifier is defe…
Lockout
H24
Flame Loss During Run. The flame signal was lost in operation (minimum firing rate raised for 1 hour) or in the stabilization phase, so the …
Lockout
E24
Flame Loss During Run. The flame signal was lost in the safety time after a second occurrence, which locks the boiler out. The table classif…
Lockout
H25
Hardware Fault. The control reported an internal safety core error, so the boiler holds; a defective control is the listed cause. The table …
Details
E25
Hardware Fault. The control reported an internal application core or safety core error, which locks the boiler out; a defective control is t…
Lockout
H26
Calibration Fault. Calibration could not proceed: stable conditions to perform gas valve offset adaptation or calibration were not reached, …
Details
E26
Calibration Fault. Calibration is missing and the calibration counter reached zero, which locks the boiler out. The table classifies it as L…
Lockout
H27
120 VAC Supply Fault. The 120 VAC supply voltage is less than 73 VAC, so the boiler holds. The table classifies it as Hold.…
Details
H28
24 VAC Supply Fault. The control 24 VAC frequency is wrong or there is high electrical noise, so the boiler holds; a defective control is th…
Details
E29
Excessive Reset Selection. The reset button has been selected too often, which locks the boiler out; clear it by cycling power to the contro…
Lockout
H30
Sequencer Fault. Sequencer fault: duplicate slave boiler addresses, loss of communication between a sequencer slave and the master (or maste…
Details
H31
Variable Speed Pump Fault. The variable speed pump feedback faulted, so the boiler holds; the listed causes are wiring to the variable speed…
Details
H32
Zone Panel Fault. Zone panel communication was lost, zone panel electronics failed, or a duplicate zone panel was detected, which is a warni…
Details
Talk to a boiler technician
Describe what the boiler is doing and get a straight answer about the next step.
On-site service in Greater Vancouver, BC. ROMA lists “Open 7 days” on its site; call to confirm same-day availability.