Carrier TP-WEM01 Advanced Installation And Configuration Instrucrions page 60

Compressor Stage 1 Maximum Runtime
The maximum amount of time to run stage 1 before engaging stage 2. This
prevents stage 1 from running for an excessive amount of time before
compressor stage 2 is engaged. When set to Auto, the Carrier control algorithms
decide when to stage.
 Default:
 Options:
On Thermostat:
Select Menu > (hold) Service > Installation Settings > Thresholds >
Compressor Configurations > Compressor stage 1 maximum
runtime
Auto
Between 10 and 120 minutes or Auto
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