Lennox furnace error code 532

The Lennox error code 532 is a problem with the blower fan circuit.

This error code is one of three possible errors that can occur with the blower. The other two are “blower fan circuit open” and “blower fan circuit ground fault”.

Lennox 570E gas furnaces use five-character error codes to identify a problem. The first two digits of the code represent the controller board problem, the third digit represents a sensor problem, and the last two digits are for the flame sensor problem. A furnace with an issue can display different error codes. Let’s take a look at what exactly this Lennox model has in store for us:

Error code 532 is for ‘low flame detect’. This means that there is not enough particulate fuel in the combustion chamber to keep a stable flame going.

The following is a list of the most common Lennox furnace error codes and what they mean:

532 – Disconnected wiring in the power board

553 – Thermostat sensor not responding

554 – Internal error in power board

555 – Blower relay circuit shorted or open

556 – Blower relay circuit open

Lennox furnace error code 532 is a general protection relay (GPR) or on/off limit switch failure. This error code can be caused by an overload, overcurrent, or an open circuit breaker.

In the case of the open circuit breaker, this might also cause a power outage in your home which will trigger the GPR to go into protect mode.

Lennox furnaces use error codes to report problems to a user. Error code 532 indicates that the fan limit switch has been activated and needs to be reset. The first step is to ensure that your furnace is off and the power is disconnected from the unit. Check for a tripped circuit breaker or blown fuse and make sure all wires are securely connected at the breaker or power pole.


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