Lennox furnace error code e270
Lennox starts with the letter “L,” so a number follows it. For example, an error code of L-0 means that the heat exchanger is obstructed, whereas an L-1 means that the burner flame sensor is defective.
Lennox furnace error code e270 is a model of Lennox furnace.
Some common error codes are E0xx, E2xx and E3xx, which usually correspond to the sensor or safety control system.
The symptom of Error Code E270 is that the blower cycles on and off without heating the boiler.
Lennox furnaces are known for their high-quality, precision, and reliability.
Lennox furnaces are designed with a power blower controlled by the ECM (Electronic Control Module). The ECM has a built-in error code that indicates the potential problem that needs to be addressed.
The best way to diagnose this issue is by first checking the furnace’s air filter and then running the self-diagnostic check before proceeding with any other troubleshooting.
1) Check the air filter.
2) Run self-diagnostic check
3) Perform repair as necessary
4) Check if the wall thermostat is in EI mode
5) Plug in the AC power supply for the furnace at the wall outlet, but do not turn on the furnace switch. Screw in mercury switch, then turn on the power to furnace at the circuit breaker
Lennox furnaces are a popular brand and have a popular error code of E270.
This error code is an indication of a blocked safety sensor. If not addressed swiftly, this error can lead to a furnace failure.
The most common cause for the E270 error code is lint or debris on the heat sensors in the exhaust vent pipe, which leads to heat loss and causes the air flow sensor to fail. The sensor is located on top of the furnace, near where the gas pipes attach.