Lennox LGH 072 User Manual

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Table 8. Alarm Codes
Event Code
ActionDisplay Message
Event Code
44 ALARM(44) GAS VALVE ON NO DEMAND GV1 UNIT OFF. GV1 POWER BUT NO DEMAND. CHECK GAS PRESS, GAS VALVE 45 ALARM(45) GAS VALVE ON NO DEMAND GV3 UNIT OFF. GV3 POWER BUT NO DEMAND. CHECK GAS PRESS, GAS VALVE
46 - 49 Reserved
50 ALARM(50) PRIMARY HEAT 1 LIMIT OPEN S10 HEAT SECT 1 PRIMARY HEAT LIMIT OPEN. CHECK AIR FLOW, LIMIT, AND WIRING. 51 ALARM(51) STRIKE 3 PRIMARY HEAT 1 LIMIT OPEN S10 HEAT SECT 1 PRIMARY HEAT LIMIT OPEN. CHECK AIR FLOW, LIMIT, AND WIRING. 52 ALARM(52) SECONDARY HEAT 1 LIMIT OPEN S21 HEAT SECT 1 SECONDARY HEAT LIMIT OPEN. CHECK AIR FLOW, LIMIT, AND WIRING. 53 ALARM(53) STRIKE 3 SECONDARY HEAT 1 LIMIT OPEN S21 HEAT SECT 1 SECONDARY HEAT LIMIT OPEN. CHECK AIR FLOW, FILTER, LIMIT, AND WIRING. 54 ALARM(54) HEAT 1 ROLL OUT OPEN HEAT SECT 1 CHECK GAS ROLL OUT S47
ALARM(54) HEAT 1 S15 LIMIT OPEN HEAT SECT 1 LIMIT OPEN. CHECK AIR FLOW, LIMIT, AND WIRING.
55 ALARM(55) STRIKE 3 HEAT 1 ROLL OUT OPEN HEAT SECT 1 CHECK GAS ROLL OUT S47
ALARM(55) STRIKE 3 HEAT 1 S15 LIMIT OPEN HEAT SECT 1 LIMIT OPEN. CHECK AIR FLOW, LIMIT, AND WIRING.
56 ALARM(56) HEAT 1 CAI SWITCH S18 HEAT SECT 1 CHECK COMBUSTION AIR MOTOR & PROOF SWITCH 57 ALARM(57) STRIKE 3 HEAT 1 CAI SWITCH S18 HEAT SECT 1 OFF CHECK COMBUSTION AIR MOTOR & PROOF SWITCH 58 ALARM(58) HEAT 1 NO PROOF GAS VALVE GV1 HEAT SECT 1 CHECK IGNITION CONTROL, FLAME PROOF, GV1, GAS SUPPLY 59 ALARM(59) STRIKE 3 NO PROOF GAS VALVE GV1 HEAT SECT 1 CHECK IGNITION CONTROL, FLAME PROOF, GV1, GAS SUPPLY 60 ALARM(60) PRIMARY HEAT 2 LIMIT OPEN S99 HEAT SECT 2 PRIMARY HEAT LIMIT OPEN. CHECK AIR FLOW, LIMIT, AND WIRING. 61 ALARM(61) STRIKE 3 PRIMARY HEAT 2 LIMIT OPEN S99 HEAT SECT 2 PRIMARY HEAT LIMIT OPEN. CHECK AIR FLOW, LIMIT, AND WIRING. 62 ALARM(62) HEAT 2 LIMIT OPEN S100 HEAT SECT 2 SECONDARY HEAT LIMIT OPEN. CHECK AIR FLOW, LIMIT, AND WIRING. 63 ALARM(63) STRIKE 3 HEAT 2 LIMIT OPEN S100 HEAT SECT 2 SECONDARY HEAT LIMIT OPEN. CHECK AIR FLOW, FILTER, LIMIT, AND WIRING. 64 ALARM(64) HEAT 2 ROLLOUT OPEN S69 CHECK ROLLOUT SENSOR AND GAS 65 ALARM(65) STRIKE 3 ROLLOUT OPEN S69 CHECK ROLLOUT SENSOR AND GAS 66 ALARM(66) HEAT 2 CAI SWITCH S45 HEAT SECT 2 CHECK COMBUSTION AIR MOTOR & PROOF SWITCH 67 ALARM(67) STRIKE 3 HEAT 2 CAI SWITCH S45 HEAT SECT 2 OFF CHECK COMBUSTION AIR MOTOR & PROOF SWITCH 68 ALARM(68) HEAT 2 NO PROOF GAS VALVE GV3 HEAT SECT 2 CHECK IGNITION CONTROL, FLAME PROOF, GV3, GAS SUPPLY 69 ALARM(69) STRIKE 3 NO PROOF GAS VALVE GV3 HEAT SECT 2 CHECK IGNITION CONTROL, FLAME PROOF, GV3, GAS SUPPLY
70 - 72 Reserved
73 ALARM(73) NETWORK SENSOR ERROR CHECK WITH INTEGRATOR FOR REFRESH RATE, NETWORK STATUS LIGHTS AND WIRING 74 ALARM(74) ZONE SENSOR A2 CHECK ZONE SENSOR AND WIRING 75 ALARM(75) OUTDOOR TEMP SENSOR RT17 CHECK SENSOR AND WIRING 76 ALARM(76) CHECK 2 AMP FUSE HUMIDITY SENSOR A91 CHECK SENSOR AND WIRING 77 ALARM(77) DISCHARGE AIR TEMP SENSOR RT6 CHECK SENSOR AND WIRING 78 ALARM(78) RETURN AIR TEMP SENSOR RT16 CHECK SENSOR AND WIRING 79 ALARM(79) ADD-ON BOARD PROBLEM ADD-ON BRD PROBLEM, RESET TO CLEAR 80 ALARM(80) ADD-ON BOARD PROBLEM ADD-ON BRD PROBLEM 81 ALARM(81) REHEAT SETUP ERROR CHECK REHEAT SETTINGS 82 ALARM(82) CONTROLLER RESET NO ACTION NEEDED 83 ALARM(83) INCORRECT SETTINGS CHECK CONFIGURATION 84 Reserved 85 ALARM(85) INCORRECT HUMIDITROL SETTINGS CHECK HUMIDITROL SETTINGS 86 ALARM(86) CONFLICTING TSTAT INPUT CHECK TSTAT INPUTS FOR SIMULTANEOUS HEAT AND COOL AND WIRING 87 Reserved 88 ALARM(88) CONTROLLER PROBLEM INTERNAL CONTROLLER PROBLEM. RESET TO CLEAR. 89 Reserved

Lennox LGH 072 Specifications

General

Brand	Lennox
Model	LGH 072
Category	Air Conditioner
Language	English