Error codes
Boiler error codes and alerts
Search by code or alert text. If a code exists on more than one controller, you will be asked which boiler you have, because the same number can mean different things.
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.
By brand
IBC Technologies error codes
270 documented alert(s) for IBC Technologies controllers.
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Viessmann error codes
578 documented alert(s) for Viessmann controllers.
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Navien error codes
180 documented alert(s) for Navien controllers.
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Noritz error codes
0 documented alert(s) for Noritz controllers.
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NTI Boilers error codes
2486 documented alert(s) for NTI Boilers controllers.
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Lochinvar error codes
152 documented alert(s) for Lochinvar controllers.
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Rinnai error codes
204 documented alert(s) for Rinnai controllers.
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Triangle Tube error codes
206 documented alert(s) for Triangle Tube controllers.
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Weil-McLain error codes
271 documented alert(s) for Weil-McLain controllers.
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Bosch Thermotechnology error codes
401 documented alert(s) for Bosch Thermotechnology controllers.
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Laars Heating Systems error codes
203 documented alert(s) for Laars Heating Systems controllers.
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Utica Boilers error codes
128 documented alert(s) for Utica Boilers controllers.
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Baxi error codes
86 documented alert(s) for Baxi controllers.
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Bradford White error codes
27 documented alert(s) for Bradford White controllers.
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Bryant error codes
36 documented alert(s) for Bryant controllers.
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Carrier error codes
36 documented alert(s) for Carrier controllers.
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Lennox error codes
20 documented alert(s) for Lennox controllers.
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Burnham error codes
84 documented alert(s) for Burnham controllers.
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Slant/Fin error codes
184 documented alert(s) for Slant/Fin controllers.
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Peerless Boilers error codes
118 documented alert(s) for Peerless Boilers controllers.
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Crown Boiler Co. error codes
180 documented alert(s) for Crown Boiler Co. controllers.
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HTP error codes
291 documented alert(s) for HTP controllers.
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Dunkirk Boilers error codes
174 documented alert(s) for Dunkirk Boilers controllers.
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Camus Hydronics error codes
0 documented alert(s) for Camus Hydronics controllers.
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AERCO (Watts) error codes
67 documented alert(s) for AERCO (Watts) controllers.
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Raypak error codes
93 documented alert(s) for Raypak controllers.
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Patterson-Kelley error codes
488 documented alert(s) for Patterson-Kelley controllers.
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Fulton error codes
0 documented alert(s) for Fulton controllers.
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Cleaver-Brooks error codes
0 documented alert(s) for Cleaver-Brooks controllers.
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RBI error codes
76 documented alert(s) for RBI controllers.
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Smith Cast Iron Boilers error codes
0 documented alert(s) for Smith Cast Iron Boilers controllers.
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De Dietrich error codes
18 documented alert(s) for De Dietrich controllers.
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A. O. Smith error codes
27 documented alert(s) for A. O. Smith controllers.
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Takagi error codes
82 documented alert(s) for Takagi controllers.
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Rheem / Ruud (commercial) error codes
0 documented alert(s) for Rheem / Ruud (commercial) controllers.
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Riello error codes
0 documented alert(s) for Riello controllers.
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U.S. Boiler Company error codes
73 documented alert(s) for U.S. Boiler Company controllers.
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New Yorker Boiler error codes
93 documented alert(s) for New Yorker Boiler controllers.
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Columbia Boiler Co. error codes
0 documented alert(s) for Columbia Boiler Co. controllers.
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Energy Kinetics error codes
0 documented alert(s) for Energy Kinetics controllers.
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Pennco error codes
34 documented alert(s) for Pennco controllers.
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Miura error codes
0 documented alert(s) for Miura controllers.
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Bryan Boilers error codes
0 documented alert(s) for Bryan Boilers controllers.
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Hurst Boiler & Welding Co., Inc. error codes
0 documented alert(s) for Hurst Boiler & Welding Co., Inc. controllers.
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Johnston Boiler Company error codes
0 documented alert(s) for Johnston Boiler Company controllers.
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Nebraska Boiler error codes
0 documented alert(s) for Nebraska Boiler controllers.
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Superior Boiler error codes
0 documented alert(s) for Superior Boiler controllers.
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York-Shipley error codes
0 documented alert(s) for York-Shipley controllers.
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Thermal Solutions Products, LLC error codes
0 documented alert(s) for Thermal Solutions Products, LLC controllers.
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Victory Energy error codes
0 documented alert(s) for Victory Energy controllers.
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Unilux Advanced Manufacturing, LLC error codes
0 documented alert(s) for Unilux Advanced Manufacturing, LLC controllers.
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Rentech Boiler Systems error codes
0 documented alert(s) for Rentech Boiler Systems controllers.
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Precision Boilers error codes
0 documented alert(s) for Precision Boilers controllers.
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Lattner Boiler Manufacturing Co. error codes
0 documented alert(s) for Lattner Boiler Manufacturing Co. controllers.
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Ideal Heating error codes
144 documented alert(s) for Ideal Heating controllers.
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Vaillant error codes
0 documented alert(s) for Vaillant controllers.
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Ferroli error codes
0 documented alert(s) for Ferroli controllers.
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Ariston error codes
0 documented alert(s) for Ariston controllers.
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Immergas error codes
0 documented alert(s) for Immergas controllers.
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Beretta error codes
0 documented alert(s) for Beretta controllers.
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Biasi error codes
0 documented alert(s) for Biasi controllers.
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Chaffoteaux error codes
0 documented alert(s) for Chaffoteaux controllers.
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Fondital error codes
0 documented alert(s) for Fondital controllers.
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Sime error codes
0 documented alert(s) for Sime controllers.
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American Standard error codes
0 documented alert(s) for American Standard controllers.
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Trane error codes
0 documented alert(s) for Trane controllers.
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York error codes
0 documented alert(s) for York controllers.
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Coleman error codes
0 documented alert(s) for Coleman controllers.
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Luxaire error codes
0 documented alert(s) for Luxaire controllers.
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Goodman error codes
0 documented alert(s) for Goodman controllers.
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Amana error codes
0 documented alert(s) for Amana controllers.
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Keeprite error codes
0 documented alert(s) for Keeprite controllers.
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AirEase error codes
0 documented alert(s) for AirEase controllers.
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Concord error codes
0 documented alert(s) for Concord controllers.
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Ducane error codes
0 documented alert(s) for Ducane controllers.
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Armstrong Air error codes
0 documented alert(s) for Armstrong Air controllers.
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Westinghouse error codes
0 documented alert(s) for Westinghouse controllers.
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Maytag error codes
0 documented alert(s) for Maytag controllers.
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Frigidaire error codes
0 documented alert(s) for Frigidaire controllers.
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Tappan error codes
0 documented alert(s) for Tappan controllers.
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Kelvinator error codes
0 documented alert(s) for Kelvinator controllers.
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Intertherm error codes
0 documented alert(s) for Intertherm controllers.
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Miller error codes
0 documented alert(s) for Miller controllers.
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Evcon error codes
0 documented alert(s) for Evcon controllers.
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By controller or manual
A. O. Smith Burkay HW commercial copper boilers (LED flash codes, user manual 100077928 Tables 4-6)
A. O. Smith · 27 documented alert(s) in this scope.
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AERCO Benchmark 750-3000 condensing boilers (C-More fault messages, OMM-0122 Table B-2)
AERCO (Watts) · 33 documented alert(s) in this scope.
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AERCO Innovation condensing boilers and water heaters (C-More fault messages, OMM-0078 Table B-2)
AERCO (Watts) · 34 documented alert(s) in this scope.
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Baxi Luna Duo-tec GA combi boilers (fault codes, I&O 7703472.01; 60GA/1.48GA in 240012485)
Baxi · 37 documented alert(s) in this scope.
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Baxi Luna Duo-tec MP heating boilers (fault codes, I&O 7703477.01)
Baxi · 49 documented alert(s) in this scope.
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Bosch Greenstar wall boilers (ZBR/ZWB -3A, fault codes, I&O 6721853955)
Bosch Thermotechnology · 19 documented alert(s) in this scope.
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Bosch Greenstar Combi 100p/151p (fault codes, I&O 6721853953)
Bosch Thermotechnology · 19 documented alert(s) in this scope.
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Bosch Greenstar FS floor-standing (KBR/KWB, fault codes, I&O 6720810590)
Bosch Thermotechnology · 19 documented alert(s) in this scope.
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Buderus GB162 (UBA3 control, display codes and LED flags, service manual 6720614965)
Bosch Thermotechnology · 103 documented alert(s) in this scope.
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Buderus GB142 (BC10 control, boiler fault codes, service manual 7214 9400)
Bosch Thermotechnology · 45 documented alert(s) in this scope.
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Bosch Singular combi (4000/5200, fault codes, IOM table 30)
Bosch Thermotechnology · 21 documented alert(s) in this scope.
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Buderus Logano plus GB312 commercial condensing boilers (SAFe fault displays, IOM 6 720 806 273)
Bosch Thermotechnology · 36 documented alert(s) in this scope.
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Buderus SSB85/120/160 commercial condensing boilers (service manual 6720866940)
Bosch Thermotechnology · 69 documented alert(s) in this scope.
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Buderus SSB255/399/512 commercial condensing boilers (IOM 6720818454)
Bosch Thermotechnology · 70 documented alert(s) in this scope.
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Bradford White Brute FT boilers (hard/soft lockout codes, I&O Document 1538D)
Bradford White · 27 documented alert(s) in this scope.
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Bryant BWC/BWH wall-hung condensing boilers (E-code fault and combustion alarm lists, user's manual OG-BWC-H-01)
Bryant · 36 documented alert(s) in this scope.
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Burnham Alpine condensing boilers (Sage2.X control; soft and hard lockout codes, I&O 103448-12)
Burnham · 29 documented alert(s) in this scope.
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Burnham ES2 cast-iron boilers (IQ control; boiler and IQ Option Panel codes, I&O 103780-11)
Burnham · 25 documented alert(s) in this scope.
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Burnham Series 2 cast-iron water boilers (IQ control Err codes, I&O 109443-05)
Burnham · 14 documented alert(s) in this scope.
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Burnham PVG power-vented cast-iron boilers (IQ Boiler Control error codes, I&O 103997-07)
Burnham · 16 documented alert(s) in this scope.
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Carrier BWC/BWH wall-hung condensing boilers (E-code fault and combustion alarm lists, user's manual OG-BWC-H-01)
Carrier · 36 documented alert(s) in this scope.
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Crown (Velocity) Phantom II boilers and combis (fault tables 18-5/18-6, I&O 110332-07)
Crown Boiler Co. · 47 documented alert(s) in this scope.
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Crown (Velocity) Phantom-X boilers (soft and hard lockout codes, I&O 105357-06)
Crown Boiler Co. · 30 documented alert(s) in this scope.
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Crown Aruba 4 cast-iron boilers (Err codes, manual PN 9902339)
Crown Boiler Co. · 16 documented alert(s) in this scope.
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Crown Aruba 6 cast-iron boilers (Err codes, IOM 112933-01)
Crown Boiler Co. · 14 documented alert(s) in this scope.
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Crown Bali 3 induced-draft boilers (fault codes, IOM 113323-02)
Crown Boiler Co. · 16 documented alert(s) in this scope.
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Crown Raptor and Raptor Combi boilers (fault codes, IOM 107363-02)
Crown Boiler Co. · 28 documented alert(s) in this scope.
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Crown Bimini BWC gas condensing boilers (legacy manual, MCBA generation)
Crown Boiler Co. · 29 documented alert(s) in this scope.
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De Dietrich MCA Pro wall-hung condensing boilers (Comfort Master error codes, ISM section 8.1)
De Dietrich · 18 documented alert(s) in this scope.
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Dunkirk Royal CO/CH combi and heating boilers (fault codes, residential IOM E93.1907.035.915.C)
Dunkirk Boilers · 68 documented alert(s) in this scope.
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Dunkirk DMG-240/380 condensing boilers (fault codes, IOM 240011656/240011664)
Dunkirk Boilers · 50 documented alert(s) in this scope.
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Dunkirk DCC/DCB wall condensing boilers (fault codes, manual MGC-2209 Rev A)
Dunkirk Boilers · 39 documented alert(s) in this scope.
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Dunkirk XEB Series 4 gas-fired steam boilers (integrated boiler control error codes, I&O 240013870 Rev A)
Dunkirk Boilers · 17 documented alert(s) in this scope.
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HTP UFT (Universal Fire Tube) boilers (Er:## codes, manual lp-542)
HTP · 26 documented alert(s) in this scope.
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HTP Elite Fire Tube Ultra (EFTU) boilers and combis (group fault codes, manual LP-723)
HTP · 45 documented alert(s) in this scope.
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HTP Elite Ultra (ELU) boilers and combis (group fault codes, manual 420010970305)
HTP · 53 documented alert(s) in this scope.
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HTP Elite FT legacy boilers (926 SIT control, manual LP-387)
HTP · 23 documented alert(s) in this scope.
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HTP Elite Premier boilers (928 SIT control, manual LP-550)
HTP · 28 documented alert(s) in this scope.
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HTP Pioneer boilers (926 SIT control, manual LP-325)
HTP · 18 documented alert(s) in this scope.
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HTP Versa-Hydro combi units (926 SIT control, manual LP-314)
HTP · 18 documented alert(s) in this scope.
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HTP UFT Combi boilers (UFTC control, manual LP-648)
HTP · 27 documented alert(s) in this scope.
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HTP UFT Combi legacy boilers manufactured before 1/1/2020 (UFTC control, manual LP-648 Rev. 001)
HTP · 27 documented alert(s) in this scope.
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HTP EFT Combi boilers (EFTC wall and floor; LP-496 floor table, LP-520 wall prints the same table without Er:30)
HTP · 26 documented alert(s) in this scope.
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IBC SL Series G3 residential boilers with the V-10 touchscreen controller
IBC Technologies · 26 documented alert(s) in this scope.
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IBC VX Series boilers with the V-10 touchscreen controller
IBC Technologies · 26 documented alert(s) in this scope.
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IBC Superflow SFC-1 combi boilers with the numeric-display control
IBC Technologies · 42 documented alert(s) in this scope.
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IBC Superflow SFT-1 tankless water heater with the numeric-display control
IBC Technologies · 39 documented alert(s) in this scope.
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IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
IBC Technologies · 30 documented alert(s) in this scope.
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IBC EX Series commercial boilers (manual 120-327E10)
IBC Technologies · 31 documented alert(s) in this scope.
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IBC DC combi legacy boilers (manual 120-183-A-R11)
IBC Technologies · 22 documented alert(s) in this scope.
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IBC HC legacy boilers (manual 120-185-A-R10)
IBC Technologies · 22 documented alert(s) in this scope.
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IBC IFIRE-B condensing boilers (manual 241941 Rev. 13)
IBC Technologies · 32 documented alert(s) in this scope.
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Ideal Exalt wall and floor condensing boilers and combis (CTRLMax manual reset lockouts and automatic reset blocking lockouts, user manual 241581-5)
Ideal Heating · 47 documented alert(s) in this scope.
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Ideal Gallant wall condensing boilers (CTRLMax manual reset lockouts, user manual A1010801-664A2200)
Ideal Heating · 22 documented alert(s) in this scope.
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Ideal Commodore Wall CB boilers (lockout, blocking and warning code tables, installation manual IOM_CB_CH)
Ideal Heating · 75 documented alert(s) in this scope.
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Laars FT Series Wall (FTHW heat-only and FTCW combi; numeric fault codes, manuals 1483C / 1487C)
Laars Heating Systems · 30 documented alert(s) in this scope.
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Laars FT Series Floor (FTHF heat-only and FTCF combi; numeric fault codes, manuals 1510B / 1505C)
Laars Heating Systems · 26 documented alert(s) in this scope.
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Laars NeoTherm Residential (NTH 080–285; hold and lockout codes, I&O 1252K section 11.H with service-manual additions 1291)
Laars Heating Systems · 147 documented alert(s) in this scope.
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Lennox GCWB95 condensing combination boilers (numeric error messages, user's information manual 240012894)
Lennox · 20 documented alert(s) in this scope.
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Lochinvar Knight fire-tube boilers (KHB floor and WHB wall, SMART SYSTEM control)
Lochinvar · 23 documented alert(s) in this scope.
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Lochinvar Noble fire-tube boilers and combis (NKB, NKC, NCF; SMART CONTROL)
Lochinvar · 30 documented alert(s) in this scope.
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Lochinvar Knight XL (KBX) commercial boilers (Service Manual Table 3-4 fault codes)
Lochinvar · 32 documented alert(s) in this scope.
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Lochinvar FTXL commercial fire-tube boilers (Service Manual Table 3-4 fault codes)
Lochinvar · 31 documented alert(s) in this scope.
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Lochinvar Crest with Hellcat (FCB) commercial boilers (Service Manual Table 3G fault codes)
Lochinvar · 36 documented alert(s) in this scope.
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Navien NCB-H combi boilers (front-panel display, NCB-H manual error codes)
Navien · 40 documented alert(s) in this scope.
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Navien NFB-H boilers (front-panel display, NFB-H manual error codes)
Navien · 33 documented alert(s) in this scope.
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Navien NFC-H fire-tube combi boilers (front-panel display, NFC-H manual error codes)
Navien · 39 documented alert(s) in this scope.
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Navien NHB-H compact boilers (front-panel display, NHB-H manual error codes)
Navien · 34 documented alert(s) in this scope.
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Navien NFB-C commercial boilers (front-panel display, NFB-C manual error codes)
Navien · 34 documented alert(s) in this scope.
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New Yorker GHE-II condensing heating boilers (H/E fault codes, I&O 110330-07 Table 18-5)
New Yorker Boiler · 46 documented alert(s) in this scope.
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New Yorker GHE-II Combi condensing boilers (H/E fault codes, I&O 110329-10 Table 19-5)
New Yorker Boiler · 47 documented alert(s) in this scope.
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NTI Trinity FTVN Series I boilers and combis (Series I control, I&O 420011303800)
NTI Boilers · 52 documented alert(s) in this scope.
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NTI Trinity FTVN Series II boilers and combis (Series II control, I&O 420012001400)
NTI Boilers · 54 documented alert(s) in this scope.
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NTI Trinity TRX Series I models 085–150C (Series I control, I&O 420010970805)
NTI Boilers · 52 documented alert(s) in this scope.
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NTI Trinity TRX Series I models 150–199C (Series I control, I&O 420011303700)
NTI Boilers · 52 documented alert(s) in this scope.
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NTI Trinity TRX Series II models 085–150C (Series II control, I&O 420012001500)
NTI Boilers · 53 documented alert(s) in this scope.
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NTI Trinity TRX Series II models 150–199C (Series II control, I&O 420012001300)
NTI Boilers · 54 documented alert(s) in this scope.
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NTI Trinity TFTN wall-hung models 085–399 (HMI control, I&O 99987137)
NTI Boilers · 48 documented alert(s) in this scope.
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NTI Trinity Lx boilers (Lx control, I&O 99986573, Tables 17-3 and 17-4)
NTI Boilers · 664 documented alert(s) in this scope.
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NTI Compass boilers and combis (Compass control, I&O 420011304100)
NTI Boilers · 53 documented alert(s) in this scope.
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NTI Trinity TFTN floor models 500–850 (HMI control, I&O 99987545)
NTI Boilers · 46 documented alert(s) in this scope.
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NTI Trinity FTG commercial fire-tube boilers (FTG control; hold/lockout and alert tables, I&O 99985422)
NTI Boilers · 679 documented alert(s) in this scope.
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NTI Trinity TFT legacy boilers (TFT control; hold/lockout and alert tables, I&O 99984535)
NTI Boilers · 679 documented alert(s) in this scope.
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Patterson-Kelley NURO control error reference (MODU-FIRE FD and THERMIFIC VELOX; Appendix C)
Patterson-Kelley · 488 documented alert(s) in this scope.
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Peerless PureFire condensing boilers (E-codes and warnings, IOM PF8248-R9)
Peerless Boilers · 50 documented alert(s) in this scope.
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Peerless PBC combi boilers (fault codes, IOM PBC8013-R5)
Peerless Boilers · 64 documented alert(s) in this scope.
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Peerless Cast 92 condensing boilers (HeatNet control, manual C928000 R1)
Peerless Boilers · 4 documented alert(s) in this scope.
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Pennco 15B-K cast-iron gas boilers (Resideo control error codes, I&O 240012786)
Pennco · 17 documented alert(s) in this scope.
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Pennco FSB cast-iron gas boilers (integrated boiler control error codes, I&O 240013101)
Pennco · 17 documented alert(s) in this scope.
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Raypak XVers L condensing boilers (error display items, I&O 241782)
Raypak · 15 documented alert(s) in this scope.
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Raypak XTherm condensing boilers 1005A-2005A (error display items, I&O 241513)
Raypak · 15 documented alert(s) in this scope.
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Raypak XTherm condensing boilers 3005-4005 (error display items, I&O 241549)
Raypak · 12 documented alert(s) in this scope.
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Raypak XFIIRE condensing boilers (error display items, I&O 241941)
Raypak · 15 documented alert(s) in this scope.
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Raypak MVB Category I & III boilers 504A-2004A (error display items, I&O 241512)
Raypak · 12 documented alert(s) in this scope.
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Raypak MVB Category IV boilers 503A-2003A (error display items, I&O 241511)
Raypak · 12 documented alert(s) in this scope.
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Raypak MVB Category IV boilers 2503-4003 (error display items, I&O 241510)
Raypak · 12 documented alert(s) in this scope.
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RBI Infinite Energy² condensing boilers (Loc lockouts and Err blocking errors, IOM IE2IBIOM-3)
RBI · 76 documented alert(s) in this scope.
Open brand index
Rinnai i-Series+ combi boilers up to 150K BTU (front-panel diagnostics, manual 800000190)
Rinnai · 42 documented alert(s) in this scope.
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Rinnai i-Series+ solo boilers up to 150K BTU (front-panel diagnostics, manual 800000191)
Rinnai · 34 documented alert(s) in this scope.
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Rinnai i-Series+ combi boilers 175K–199K BTU (front-panel diagnostics, 175/199 manual)
Rinnai · 28 documented alert(s) in this scope.
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Rinnai i-Series+ solo boilers 175K–199K BTU (front-panel diagnostics, 175/199 manual)
Rinnai · 25 documented alert(s) in this scope.
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Rinnai Q-Series condensing boilers (block and error code short reference, Installation & Servicing Instructions 800000010)
Rinnai · 14 documented alert(s) in this scope.
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Rinnai previous-generation I-Series combi boilers (diagnostic codes, manual 800000111 hosted on the i060CN product page)
Rinnai · 35 documented alert(s) in this scope.
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Rinnai previous-generation I-Series solo boilers (diagnostic codes, manual 800000112 hosted on the i060SN product page)
Rinnai · 26 documented alert(s) in this scope.
Open brand index
Slant/Fin Victory VSPH cast-iron boilers (LED diagnostic patterns, manual VSPH-41 Rev C)
Slant/Fin · 6 documented alert(s) in this scope.
Open brand index
Slant/Fin CHS condensing fire-tube boilers (lockout/hold/alert codes)
Slant/Fin · 30 documented alert(s) in this scope.
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Slant/Fin Lynx boilers (lockout/hold/alert codes)
Slant/Fin · 40 documented alert(s) in this scope.
Open brand index
Slant/Fin Lynx Combi boilers (lockout/hold/alert codes)
Slant/Fin · 40 documented alert(s) in this scope.
Open brand index
Slant/Fin VSL boilers (L/E codes)
Slant/Fin · 53 documented alert(s) in this scope.
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Slant/Fin cast-iron boilers Sentry / Sentinel / Galaxy GG (HydroStat 3200-Plus LED diagnostics)
Slant/Fin · 15 documented alert(s) in this scope.
Open brand index
Takagi T-H3 family tankless water heaters (3-digit error codes, manual 68A255-1)
Takagi · 24 documented alert(s) in this scope.
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Takagi T-D2 tankless water heaters (3-digit error codes, manual 62S051-1)
Takagi · 17 documented alert(s) in this scope.
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Takagi T-M32 / T-M32 ASME tankless water heaters (3-digit error codes, manual 63T051-5)
Takagi · 20 documented alert(s) in this scope.
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Takagi T-M50 / T-M50 ASME tankless water heaters (3-digit error codes, manual 63V051-9)
Takagi · 21 documented alert(s) in this scope.
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Triangle Tube Prestige, Excellence and Instinct with the CTRLMax control (E-code fault table)
Triangle Tube · 48 documented alert(s) in this scope.
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Triangle Tube Prestige Solo gen-1 (MCBA control, pre-2011 Solo 110 manual)
Triangle Tube · 37 documented alert(s) in this scope.
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Triangle Tube Prestige Solo PT-era (TriMax control, 2011-50 manual revised 2012)
Triangle Tube · 40 documented alert(s) in this scope.
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Triangle Tube Prestige Excellence PT-era (TriMax control, 2011-61 manual revised 2014)
Triangle Tube · 40 documented alert(s) in this scope.
Open brand index
Triangle Tube Prestige PA-era (ACVMax control, 2015 user's manual)
Triangle Tube · 41 documented alert(s) in this scope.
Open brand index
U.S. Boiler Alpine condensing boilers (Sage2.X control; soft and hard lockout codes, I&O 103448-12)
U.S. Boiler Company · 29 documented alert(s) in this scope.
Open brand index
U.S. Boiler K2 watertube condensing boilers (soft and hard lockout codes, I&O 107672-03)
U.S. Boiler Company · 28 documented alert(s) in this scope.
Open brand index
U.S. Boiler PVG power-vented cast-iron boilers (IQ Boiler Control error codes, I&O 103997-07)
U.S. Boiler Company · 16 documented alert(s) in this scope.
Open brand index
Utica Oneida residential combi and heating boilers (CO/CH; fault codes per residential IOM E93.1907.035.915.C)
Utica Boilers · 68 documented alert(s) in this scope.
Open brand index
Utica SSC condensing boilers (E-codes, IOM 240011320 Rev G)
Utica Boilers · 13 documented alert(s) in this scope.
Open brand index
Utica MAC/MAH wall condensing boilers (fault codes, I&O 240013687 Rev A)
Utica Boilers · 39 documented alert(s) in this scope.
Open brand index
Utica cast-iron boilers MGB-K / MGC Series 4 (LED diagnostic codes)
Utica Boilers · 8 documented alert(s) in this scope.
Open brand index
Vitodens 100-W B1HE and B1KE combi boilers (HMU-BCU control, manual 6167 818 - 22)
Viessmann · 100 documented alert(s) in this scope.
Open brand index
Vitodens 200-W B2HE boilers (HMU/HMI-BCU control, manual 6167 813 - 23)
Viessmann · 136 documented alert(s) in this scope.
Open brand index
Vitodens 200-W B2HA large-input boilers (Vitotronic control, B2HA service manuals 5683 702/5685 828/5683 710)
Viessmann · 94 documented alert(s) in this scope.
Open brand index
Vitocrossal 300 CU3A floor boilers (Vitotronic 200 control, service manual 5673 649 - 20)
Viessmann · 75 documented alert(s) in this scope.
Open brand index
Vitocrossal 200 CI2 commercial condensing boilers (fault codes, SI 6175 797 - 23)
Viessmann · 132 documented alert(s) in this scope.
Open brand index
Vitocrossal 200 CM2 commercial condensing boilers (GW6B control, SI 5584 109 - 16 / 5546 489 - 15)
Viessmann · 41 documented alert(s) in this scope.
Open brand index
Weil-McLain ECO Tec Series 2 boilers and combis (display fault messages, manual 550-100-270)
Weil-McLain · 51 documented alert(s) in this scope.
Open brand index
Weil-McLain Evergreen boilers (display fault messages; fault set identical in manuals 550-100-210 and 550-100-211)
Weil-McLain · 21 documented alert(s) in this scope.
Open brand index
Weil-McLain Ultra Series 4 boilers (display fault messages, manual 550-100-440)
Weil-McLain · 19 documented alert(s) in this scope.
Open brand index
Weil-McLain GV90+ Series 2 (POWER LED flash-code diagnostics, manual 550-143-010)
Weil-McLain · 16 documented alert(s) in this scope.
Open brand index
Weil-McLain Simplicity (display fault messages and warnings, manual 550-143-073)
Weil-McLain · 55 documented alert(s) in this scope.
Open brand index
Weil-McLain AquaBalance Series 2 (A## hard lockouts and F## soft lockouts, manual 550-100-325)
Weil-McLain · 39 documented alert(s) in this scope.
Open brand index
Weil-McLain CGa Series 4 cast-iron boilers (display fault messages, manual 550-100-223)
Weil-McLain · 20 documented alert(s) in this scope.
Open brand index
Weil-McLain CGi Series 5 cast-iron boilers (display fault messages, manual 550-100-629)
Weil-McLain · 17 documented alert(s) in this scope.
Open brand index
Weil-McLain EG Series cast-iron boilers (display faults, manual 550-100-225)
Weil-McLain · 33 documented alert(s) in this scope.
Open brand index
Recently documented
Ignition Trials Exceeded
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
Water High Limit
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
Low Water Cutoff
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
Interlock 1 or 2 Open
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
Vent High Limit
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
Max. delta T Exceeded
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
Low RPM / Air Flow
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
Module High Current
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
Low Module Current
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
Low Water Pressure
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
Inlet Pres. Sensor
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
See: Status > SIM menu > Status
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
Roll Out Switch
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
Controller Board
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
No Boilernet Comm
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
No MAC address
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
[Vent High Pressure]
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
Flame Signal / Vent Block
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
Reversed Flow
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
Temp. probe error
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
Unhandled error code
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
Blank – screen dark
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
Service mode after update
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
Water High Limit / Low Water Cutoff won't clear
IBC SL G3 light-commercial boilers (V-10 controller, manual 120-270E12)
Meaning and next steps
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.