Slant/Fin · Error codes
Slant/Fin 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.
Slant/Fin Victory VSPH cast-iron boilers (LED diagnostic patterns, manual VSPH-41 Rev C)
POWER LED flashing
Reversed polarity on 120 V power supply. The flashing POWER LED indicates the 120 V power supply polarity is reversed, so reverse the hot an…
Lockout
POWER + TSTAT/CIRC LEDs flashing
48 VAC on thermostat circuit. The flashing POWER and TSTAT/CIRC LEDs indicate 48 VAC on the thermostat circuit, so check and correct the the…
Lockout
POWER + PRES SWITCH LEDs flashing
Pressure switch closed before blower start or failed to close. The flashing POWER and PRES SWITCH LEDs indicate the pressure switch contacts…
Lockout
POWER + FLAME LEDs flashing
Flame sensed without call for heat. The flashing POWER and FLAME LEDs indicate flame was sensed without a call for heat, so remove the air b…
Lockout
FLAME LED flashing
Pilot flame not established during trial for ignition. The flashing FLAME LED indicates the pilot flame was not established during the trial…
Lockout
PRES SWITCH LED flashing
Pressure switch opened during boiler run. The flashing PRES SWITCH LED indicates the pressure switch opened during the boiler run period, so…
Details
Slant/Fin CHS condensing fire-tube boilers (lockout/hold/alert codes)
Lockout 2
Waiting for safety data verification. Possible cause: faulty Sola controller. Corrective action: replace Sola controller. The table classifi…
Lockout
Lockout 9
Flame bias out of range. Possible causes: 4-20mA input being overdriven; control malfunction. Corrective action: if using 4-20mA input, chec…
Lockout
Hold 27
Flame sensor shorted to ground detected. A flame circuit shorted to ground may show up as a flame circuit timeout; zero-ohm shorts can displ…
Details
Hold 61
Anti short-cycle. Normal operation. Corrective action: allow timer to expire, or reduce Anti short-cycle setting as needed (see Appendix A).…
Details
Hold 62
Fan speed not proved. Normal operation (Drive to Lightoff); Hold 62 is momentarily displayed prior to burner ignition. Other causes: blown f…
Lockout
Hold 63
LCI OFF (Limit control input). Possible cause: incorrect Sola controller. Corrective action: replace control with correct model. The table c…
Details
Hold 65
Interrupted Air Switch OFF. Table 15-1 prints no possible-cause or corrective-action cells for this row. The table classifies it as Hold.…
Details
Hold 66
Interrupted air switch ON. Table 15-1 prints no possible-cause or corrective-action cells for this row. The table classifies it as Hold.…
Details
Hold 67
ILK OFF. Possible causes: low water condition (check operation of internal LWCO); external limit tripped (indication that an external limit …
Details
Lockout or Hold 79
Outlet High Limit. Possible causes: CH or DHW settings (check if CH and/or DHW setpoint plus off hysteresis exceed High limit setpoint, fact…
Lockout
Lockout or Hold 81
Delta T limit (or appliance making banging/hissing sounds). Possible cause: insufficient water flow. Corrective actions: check Fuse B; check…
Lockout
Lockout 82
Stack limit. Possible causes: dirty heat exchanger (inspect and if required clean combustion chamber and/or heat exchanger per Section 14.0)…
Lockout
Lockout 85
Inlet/Outlet Inversion Limit. Possible cause: pump flowing in the wrong direction. Corrective action: ensure water circulation through the b…
Lockout
Lockout or Hold 88
Outlet T Rise limit. Possible cause: insufficient water flow. Corrective action: see Lockout 81. The table classifies it as Lockout/Hold.…
Lockout
Hold 91
Inlet sensor fault. Possible causes: sensor disconnected (check sensor connection located on the bottom of the heat exchanger and connection…
Details
Hold 92
Outlet sensor fault. Possible causes: sensor disconnected (check sensor connection located on the top of the heat exchanger and connection o…
Details
Hold 95
Stack sensor fault. Possible causes: sensor disconnected (check sensor connection located at the bottom of the flue pipe inside the boiler c…
Details
Lockout 109 or Hold 110
Ignition failure occurred (failure to prove flame after 3 ignition attempts). Possible causes/actions: incorrect spark igniter gap (3/16 to …
Lockout
Lockout 113
Flame circuit timeout. A flame circuit shorted to ground may show up as a flame circuit timeout; high resistance shorts can display as Locko…
Lockout
Lockout 122
Lightoff rate proving failed. Possible causes: blower is not turning on (see 'Blower not operating' below); missing or incorrect blower feed…
Lockout
Alert 128
Modulation rate was limited due to IAS open. Possible cause: incorrect Sola controller. Corrective action: replace control with correct mode…
Details
Hold 137
ILK failed to close. See Hold / Lockout 67. The table classifies it as Hold.…
Details
Lockout 138
Flame too low. Possible causes: blocked venting (check exhaust vent, air-inlet, combustion blower, gas valve venturi, heat exchanger); foule…
Lockout
Lockout 173
Pilot relay feedback incorrect. Possible cause: external electrical noise. Corrective action: look for sources of electrical noise, i.e. a l…
Lockout
Lockout 174
Safety relay feedback incorrect. Possible causes: failing limit switch in ILK circuit (check operation of internal LWCO and/or external limi…
Lockout
Alert 206
Lead Lag header temperature was invalid. Possible cause: system sensor not connected. Corrective action: if desired, install system sensor a…
Details
Alert 233
Lead Lag outdoor temperature was invalid. See Alert 248. The table classifies it as Alert.…
Details
Alert 248
CH outdoor temperature was invalid. Possible causes: outdoor sensor not connected (the CHS is factory set with Outdoor Reset enabled — conne…
Details
Alert 448
Flame too low. Indicates that the burner had to shut down due to insufficient flame signal. Possible causes: blocked venting, dirty heat exc…
Lockout
Alert 449
Modulation rate was limited due to flame strength. Normal operation — indicates the minimum permissible modulation rate was temporarily incr…
Lockout
Slant/Fin Lynx boilers (lockout/hold/alert codes)
A01
Ignition Failure - 3 unsuccessful ignition attempts in a row. Check for steady sparking at electrodes. If spark not steady - check spark gap…
Lockout
A02
Flame Failure - 3 losses of flame signal during one demand. Check for proper combustion, at both max. and min. input firing rates. If combus…
Lockout
A03
Water High Limit Open. Check to see if the water outlet temperature reaches 203°F. If it does, replace the water outlet 12k ohm sensor. If i…
Lockout
A04
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A05
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A09
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A10
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A12
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A13
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A14
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A15
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A16
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A18
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A32
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A19
Flame Detected at Wrong Time. If a flame is still observed after a call for heat is stopped, replace the gas valve. If the burner seems to b…
Lockout
A20
Flame Detected at Wrong Time. If a flame is still observed after a call for heat is stopped, replace the gas valve. If the burner seems to b…
Lockout
A33
Fan Failure - RPM error. Check wire harness connections going to the blower. Replace blower. The table classifies it as Lockout (A).…
Lockout
E01
Water Outlet Sensor Open. Check wire harness connections going to the sensor. Replace the sensor. The table classifies it as Blocking (E).…
Details
E02
Water Inlet Sensor Open. Check wire harness connections going to the sensor. Replace the sensor. The table classifies it as Blocking (E).…
Details
E03
Flue Gas Sensor Open. Check wire harness connections going to the sensor. Replace the sensor. The table classifies it as Blocking (E).…
Details
E11
Water Outlet Sensor Shorted. Replace the sensor. The table classifies it as Blocking (E).…
Details
E12
Water Inlet Sensor Shorted. Replace the sensor. The table classifies it as Blocking (E).…
Details
E13
Flue Gas Sensor Shorted. Replace the sensor. The table classifies it as Blocking (E).…
Details
E19
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 33…
Details
E42
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 33…
Details
E45
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 33…
Details
E46
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 33…
Details
E47
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 33…
Details
E48
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 33…
Details
E20
Flame Detected at Wrong Time. If a flame is still observed after a call for heat is stopped, replace the gas valve. If the burner seems to b…
Lockout
E21
Polarity Error. Reverse the hot and neutral power supply wires. The table classifies it as Blocking (E).…
Details
E22
Frequency Error. Check power supply frequency to be 60 hz, certain power supplies may not provide the proper frequency. The table classifies…
Details
E24
Earth Connection Faulty. Check grounding of control and boiler chassis. The table classifies it as Blocking (E).…
Details
E30
Excess Flue Temperature. Check flue gas temperature, at the maximum firing rate and high water temperature. If the flue gas temperature reac…
Details
E31
Low Water Cutoff Error. If a low water cutoff is installed, check the system water pressure and content. Check the condition of the LWCO. If…
Details
E32
Excess Water Inlet Temperature. Check that the wire harnesses to the water inlet and outlet sensors are not reversed. The water inlet sensor…
Details
E51
Reset Button Error. Try turning power supply off and on again. If error returns, replace the display board. The table classifies it as Block…
Details
E52
Boiler Model Selection Error. Check that the proper boiler model selection and confirmation code is entered in the display. See Table 5 on p…
Details
H04
Domestic Hot Water Tank Sensor Open. If sensor is utilized, check wire harness connections going to the sensor, or replace the sensor. If no…
Details
H14
Domestic Hot Water Tank Sensor Shorted. If sensor is utilized, replace the sensor. If no sensor is utilized, check the proper DHW mode is pr…
Details
Slant/Fin Lynx Combi boilers (lockout/hold/alert codes)
A01
Ignition Failure - 3 unsuccessful ignition attempts in a row. Check for steady sparking at electrodes. If spark not steady - check spark gap…
Lockout
A02
Flame Failure - 3 losses of flame signal during one demand. Check for proper combustion, at both max. and min. input firing rates. If combus…
Lockout
A03
Water High Limit Open. Check to see if the water outlet temperature reaches 203°F. If it does, replace the water outlet 12k ohm sensor. If i…
Lockout
A04
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A05
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A09
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A10
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A12
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A13
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A14
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A15
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A16
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A18
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A32
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 32…
Lockout
A19
Flame Detected at Wrong Time. If a flame is still observed after a call for heat is stopped, replace the gas valve. If the burner seems to b…
Lockout
A20
Flame Detected at Wrong Time. If a flame is still observed after a call for heat is stopped, replace the gas valve. If the burner seems to b…
Lockout
A33
Fan Failure - RPM error. Check wire harness connections going to the blower. Replace blower. The table classifies it as Lockout (A).…
Lockout
E01
Water Outlet Sensor Open. Check wire harness connections going to the sensor. Replace the sensor. The table classifies it as Blocking (E).…
Details
E02
Water Inlet Sensor Open. Check wire harness connections going to the sensor. Replace the sensor. The table classifies it as Blocking (E).…
Details
E03
Flue Gas Sensor Open. Check wire harness connections going to the sensor. Replace the sensor. The table classifies it as Blocking (E).…
Details
E11
Water Outlet Sensor Shorted. Replace the sensor. The table classifies it as Blocking (E).…
Details
E12
Water Inlet Sensor Shorted. Replace the sensor. The table classifies it as Blocking (E).…
Details
E13
Flue Gas Sensor Shorted. Replace the sensor. The table classifies it as Blocking (E).…
Details
E19
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 33…
Details
E42
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 33…
Details
E45
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 33…
Details
E46
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 33…
Details
E47
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 33…
Details
E48
Control Failure. Replace control board. Make sure the proper boiler model selection and confirmation code is entered. See Table 5 on page 33…
Details
E20
Flame Detected at Wrong Time. If a flame is still observed after a call for heat is stopped, replace the gas valve. If the burner seems to b…
Lockout
E21
Polarity Error. Reverse the hot and neutral power supply wires. The table classifies it as Blocking (E).…
Details
E22
Frequency Error. Check power supply frequency to be 60 hz, certain power supplies may not provide the proper frequency. The table classifies…
Details
E24
Earth Connection Faulty. Check grounding of control and boiler chassis. The table classifies it as Blocking (E).…
Details
E30
Excess Flue Temperature. Check flue gas temperature, at the maximum firing rate and high water temperature. If the flue gas temperature reac…
Details
E31
Low Water Cutoff Error. If a low water cutoff is installed, check the system water pressure and content. Check the condition of the LWCO. If…
Details
E32
Excess Water Inlet Temperature. Check that the wire harnesses to the water inlet and outlet sensors are not reversed. The water inlet sensor…
Details
E51
Reset Button Error. Try turning power supply off and on again. If error returns, replace the display board. The table classifies it as Block…
Details
E52
Boiler Model Selection Error. Check that the proper boiler model selection and confirmation code is entered in the display. See Table 5 on p…
Details
H04
Domestic Hot Water Tank Sensor Open. If sensor is utilized, check wire harness connections going to the sensor, or replace the sensor. If no…
Details
H14
Domestic Hot Water Tank Sensor Shorted. If sensor is utilized, replace the sensor. If no sensor is utilized, check the proper DHW mode is pr…
Details
Slant/Fin VSL boilers (L/E codes)
L01
No flame detected after three ignition attempts. Check: correct gas supply pressure (section 12.7); ignition spark (section 14.4); correct c…
Lockout
L02
Flame extinguishes three times. Check that the ionization current is set at a value greater than 60 (section 14.12.4); check that the gas va…
Details
L03
Boiler temperature is over 203°F (95°C). Check that the circulator pump is working; check that the water flow is not less than 5 GPM. Soluti…
Details
L04
Gas valve command relay. Replace the power control board. The table classifies it as Lock-out (L).…
Details
L05
Safety relay. Check for correct polarity of the wires to the pump; try to switch the wires. If the pump won't run replace it; if the pump is…
Details
L06
Flue gas sensor over 210°F (99°C). Check that the electrical resistance of the flue gas sensor complies with the graph in Section 14.13; che…
Details
L07
Electrical circuit of flue gas sensor is interrupted. Check that the electrical resistance of the flue gas sensor corresponds with the graph…
Details
L08
Spark generator relay. Replace the power control board. The table classifies it as Lock-out (L).…
Lockout
L09
RAM memory. Replace the power control board. The table classifies it as Lock-out (L).…
Details
L10
E2prom memory damaged. Replace the power control board. The table classifies it as Lock-out (L).…
Details
L12
E2prom memory damaged. Replace the power control board. The table classifies it as Lock-out (L).…
Details
L13
Program error. Replace the power control board. The table classifies it as Lock-out (L).…
Details
L14
Program error. Replace the power control board. The table classifies it as Lock-out (L).…
Details
L15
Program error. Replace the power control board. The table classifies it as Lock-out (L).…
Details
L16
Program error. Replace the power control board. The table classifies it as Lock-out (L).…
Details
L17
The temperature difference between the U1 and U6 sensors is too great. Check that the electrical resistance of the two sensors corresponds w…
Details
L18
Program error. Replace the power control board. The table classifies it as Lock-out (L).…
Details
L19
Flame sensed for 10 seconds after the closure of the gas valve. Call technical service. The table classifies it as Lock-out (L).…
Details
L20
Flame sensed before opening of the gas valve. Call technical service. The table classifies it as Lock-out (L).…
Details
L21
Boiler in blocking state for more than 20 hours. Press RESET button and check the blocking error "E" on Section 13.18.2. The table classifie…
Details
L25
U1 or U6 sensor increase its temperature too fast. Check that the heating water flow is not too low; check that the circulator pump is worki…
Details
L32
Program error. Replace the power control board. The table classifies it as Lock-out (L).…
Details
L33
Fan rotation error. Check that the voltage to the fan is 163(±10)Vdc. If the fan is powered with 163Vdc, replace the fan; if the voltage to …
Details
L45
Heating circuit filling time longer than 10 minutes. Check that the heating pressure switch setting pressure: FILL appears when the pressure…
Details
L46
Filling of heating circuit repeated 16 times in 24 hours. Check that the heating pressure switch setting pressure: FILL appears when the pre…
Details
L47
Flue pressure switch open time longer than 60 minutes. Check that no obstructions are in the flue discharge/air intake line; check the flue …
Details
E01
U1 boiler temperature sensor circuit interrupted. Check that the electrical resistance of the sensor corresponds with the graph in section 1…
Details
E02
U2 domestic hot water temperature sensor circuit interrupted. Check that the electrical resistance of the sensor corresponds with the graph …
Details
E04
U8 return temperature sensor circuit interrupted. Check that the electrical resistance of the sensor corresponds with the graph in section 1…
Details
E07
U3 cold water or indirect water heater sensor circuit interrupted. Check that the electrical resistance of the sensor corresponds with the g…
Details
E08
U6 boiler temperature sensor circuit interrupted. Check that the electrical resistance of the sensor corresponds with the graph in section 1…
Details
E11
U1 boiler temperature sensor circuit short-circuited. Check that the electrical resistance of the sensor corresponds with the graph in secti…
Details
E12
U2 domestic hot water temperature sensor circuit short-circuited. Check that the electrical resistance of the sensor corresponds with the gr…
Details
E13
Erroneous temperature reading. Replace the power control board. The table classifies it as Blocking (E).…
Details
E14
U8 return temperature sensor short-circuited. Check that the electrical resistance of the sensor corresponds with the graph in section 14.13…
Details
E15
U4 outside sensor short-circuited. Check that the electrical resistance of the sensor corresponds with the graph in section 14.14; check tha…
Details
E16
Erroneous temperature reading. Replace the power control board. The table classifies it as Blocking (E).…
Details
E17
U3 cold water temperature or indirect water heater temperature sensor circuit shorted. Check that the electrical resistance of the sensor co…
Details
E18
U6 boiler temperature sensor circuit shorted. Check that the electrical resistance of the sensor corresponds with the graph in section 14.13…
Details
E19
E2prom memory damaged. Replace the command and control board. The table classifies it as Blocking (E).…
Details
E20
Flame presence with gas valve closed. Replace the gas valve. The table classifies it as Blocking (E).…
Details
E21
Phase and neutral inverted. Invert phase and neutral. If phase and neutral are correctly wired, replace the power and control board. The tab…
Details
E22
Electrical supply frequency other than 60Hz. Check the electrical frequency of the system; check if CS parameter is at 03 (see section 17). …
Details
E23
Ground connection is absent. Check if the boiler is properly grounded. If the boiler is properly grounded, replace the power control board. …
Details
E30
Erroneous temperature reading. Replace the power control board. The table classifies it as Blocking (E).…
Details
E31
Erroneous temperature reading. Replace the power control board. The table classifies it as Blocking (E).…
Details
E32
Erroneous temperature reading. Replace the power control board. The table classifies it as Blocking (E).…
Details
E33
Erroneous temperature reading. Replace the power control board. The table classifies it as Blocking (E).…
Details
E42
Program error. Replace the power control board. The table classifies it as Blocking (E).…
Details
E50
Error in the boiler tY parameter selection. Move ON switches 7 and set again the correct tY value (see section 17). If tY value is correct, …
Details
E51
Reset button pressed too often in a short period time. No checks/solutions printed in section 13.18.2 for this row. The table classifies it …
Details
E52
Heating flow switch closed. Check if the heating pump is running; check if the flow switch contact is stuck. The pump should not run and the…
Details
E53
Heating flow switch open. Check if the heating pump is running; check if the flow switch contact is broken. The pump should run and the cont…
Details
Slant/Fin cast-iron boilers Sentry / Sentinel / Galaxy GG (HydroStat 3200-Plus LED diagnostics)
LOW WATER LED (on)
Low water condition detected. When installed on a Hydrolevel Electro-Well, the LOW WATER light on solid indicates the control is not detecti…
Details
LOW WATER LED (blinking)
Low water cut-off lockout (manual reset mode). When the LOW WATER light is blinking, the control has been programmed to provide low water lo…
Lockout
All LEDs + temperature display (blinking alternately)
Safety high limit over-temperature lockout. If the LED lights and the temp display are blinking alternately, the control has sensed a boiler…
Lockout
DAMPER POWER LED (on/blinking, burner not firing)
Vent damper circuit not proven. If the DAMPER POWER LED is on and the burner is not firing: make sure the plug connection (or jumper where t…
Details
TEMP ACTIVE LED (off)
Control not powered. Troubleshooting Flow Chart 1 (Burner Will Not Fire): if the green TEMP ACTIVE LED is not on, the control is not powered…
Details
LOW WATER LED (on)
Low water condition detected. When installed on a Hydrolevel Electro-Well, the LOW WATER light on solid indicates the control is not detecti…
Details
LOW WATER LED (blinking)
Low water cut-off lockout (manual reset mode). When the LOW WATER light is blinking, the control has been programmed to provide low water lo…
Lockout
All LEDs + temperature display (blinking alternately)
Safety high limit over-temperature lockout. If the LED lights and the temp display are blinking alternately, the control has sensed a boiler…
Lockout
DAMPER POWER LED (on/blinking, burner not firing)
Vent damper circuit not proven. If the DAMPER POWER LED is on and the burner is not firing: make sure the plug connection (or jumper where t…
Details
TEMP ACTIVE LED (off)
Control not powered. Troubleshooting Flow Chart 1 (Burner Will Not Fire): if the green TEMP ACTIVE LED is not on, the control is not powered…
Details
LOW WATER LED (on)
Low water condition detected. When installed on a Hydrolevel Electro-Well, the LOW WATER light on solid indicates the control is not detecti…
Details
LOW WATER LED (blinking)
Low water cut-off lockout (manual reset mode). When the LOW WATER light is blinking, the control has been programmed to provide low water lo…
Lockout
All LEDs + temperature display (blinking alternately)
Safety high limit over-temperature lockout. If the LED lights and the temp display are blinking alternately, the control has sensed a boiler…
Lockout
DAMPER POWER LED (on/blinking, burner not firing)
Vent damper circuit not proven. If the DAMPER POWER LED is on and the burner is not firing: make sure the plug connection (or jumper where t…
Details
TEMP ACTIVE LED (off)
Control not powered. Troubleshooting Flow Chart 1 (Burner Will Not Fire): if the green TEMP ACTIVE LED is not on, the control is not powered…
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.