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Re: 14 sierra blower inop
Posted to Technical Discussion Forum on 2/18/2020 14 Replies

Hi Chad. That is a 3 phase brushless blower motor.

Follow the B1093 diagnostic document exactly. It should identify the fault.

However, if you have access to a signal generator, you can connect it as shown here and monitor the results. [3 Phase Blower Moto... Login to read more.

Files Referenced:


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