A multimeter showing 31 ohms when checking the resistance of a compressor start winding indicates what?

A multimeter reading of 31 ohms when checking the resistance of a compressor start winding indicates that the winding has continuity and is functioning properly. In electrical circuits, continuity refers to the presence of a complete path for current to flow. A measurable resistance value like 31 ohms suggests that the winding is intact and not broken, which is essential for proper operation.

Values for resistance in electric motor windings can vary based on design, but a 31-ohm measurement typically indicates a good condition under normal circumstances, as it shows that the winding is not open (which would indicate infinite resistance) or shorted (which would typically have a value close to zero ohms). Hence, the resistance reading confirms the winding's integrity, allowing it to operate effectively in the compressor.

Winding issues such as overheating or shorting typically present themselves with more extreme resistance values, while an open winding would result in an infinite reading.