Lennox Rooftop-Gas Furnace Error Codes

 Climatic 50 Roof-Top, Aircoolair & Compactair Version 24

Lennox Rooftop-Gas Furnace Error Codes

Error Codes	Problem
001	Airflow
004	Filters, Clogged up
005	Filters, Missing
006	Recovery Module , Filters, Clogged up
011	Electric heating elements
012	High Temperature, Blowing
013	Low Temperature, Ambient
014	Gas burner, 1
015	Gas burner, 2
022	Low Temperature, Blowing
023	High Temperature, Ambient
031	Humidifier
032	Low Humidity, Ambient
033	High Humidity, Ambient
041	Pump
051	Recovery Module, Motor failure
052	Recovery Module, Wheel failure
070	Clock card
071	BE50, 1
072	BE50, 2
081	Temperature sensor, Ambient
082	Humidity sensor, Ambient
083	Temperature probe, Outside
084	Humidity sensor, Outside
085	Temperature probe, Blower
086	Circuit 1, Temperature sensor, Water condenser Outlet
087	Circuit 2, Temperature sensor, Water condenser Outlet
088	Temperature sensor, return or Mixing air
091	Blower
092	Circuit 1, Condenser fan
093	Circuit 2, Condenser fan
094	Circuit 3, Condenser fan
095	Circuit 4, Condenser fan
096	Low temperature, Water Condenser
097	High temperature, Water Condenser
098	Flow rate, water condenser
099	Smoke detector
111	Circuit 1, Probe or Sensor
115	Circuit 1, High pressure or electrical protection
117	Circuit 1, Low pressure
118	Circuit 1, Risk of Frosting
121	Circuit 2, Probe or Sensor
125	Circuit 2, High pressure or electrical protection
127	Circuit 2, Low pressure
128	Circuit 2, Risk of Frosting
131	Circuit 3, Probe or Sensor
135	Circuit 3, High pressure or electrical protection
137	Circuit 3, Low pressure
141	Circuit 4, Probe or Sensor
145	Circuit 4, High pressure or electrical protection
147	Circuit 4, Low pressure

Lennox Gas Furnace Error Codes

Lennox Gas Furnace Error Codes

EL180DFE series units are mid-efficiency gas furnaces used for downflow applications only, manufactured with Lennox Duralok heat exchangers formed of aluminized steel. EL180DFE units are available in heating capacities of 44,000 to 110,000 Btuh and cooling applications 1.5 to 5 tons. Refer to Engineering Handbook for proper sizing.

The integrated control is equipped with an LED light for troubleshooting

Off -No power to control or board fault detected

On- Board fault detected,

Heartbeat1- Control powered – displayed during all modes of operation if no errors are detected

1 Reverse Line Voltage Polarity

2 Improper Earth Ground

3 Burner failed to light, or lost flame during heat demand

4 Low Flame Signal – check flame sensor

5 Watchguard – burner failed to light, exceeded maximum number of retries or recycles.

6 Not Used

7 Primary or Secondary Limit Open or Watchguard Mode  – Limit Switch Open longer than 3 minutes.

8 Rollout Switch Open

9 Pressure Switch failed to close or opened during heat demand

10 Watchguard – Pressure Switch opened 5 times during one heat demand

11 Pressure Switch stuck closed prior to activation of combustion air inducer

12 Flame Sensed without gas valve energized

13 Low Line Voltage

Notes:

Note 1

A ”Heartbeat” is indicated by a ”Slow Flash” – 1 sec on 1 sec off, repeating

Note 2

Error codes are indicated by a ”Rapid Flash” – the LED flashes X times at 1/2 sec on 1/2 sec off, remains off for 3 sec, then repeats

Note 3
Last 10 error codes are stored in memory including when power is shut off to the unit. – To recall, press and release button, most recent will be displayed first, LED off for 3 sec, then next error code is displayed, etc. To clear error codes, depress and hold button longer than 5 seconds.

Lennox AC Error Codes and Troubleshooting

INSTALLATION OPERATING & MAINTENANCE MANUAL:

Lennox Rooftop Service Manual