Air Systems Cleaning Specialist (ASCS) Practice Exam

When a properly wired condensate pump fails, it will allow bypass of the condensate. This means that the condensate, which is produced by the HVAC system, is not properly drained away due to the pump's failure. Instead of being expelled away from the system, the condensate can accumulate and potentially overflow from the unit. Allowing bypass of the condensate can lead to water damage or mold growth if the water is not properly managed.

The other options do not accurately represent the consequences of a condensate pump failure. Turning off the HVAC system typically happens due to safety mechanisms in the event of a blockage or overflow, but it’s not the direct result of a failed pump. Maintaining HVAC system airflow and engaging the dehumidification cycle are functions that are related to the operation of the system, but they are not directly affected by the failure of the condensate pump, which primarily deals with the removal of the moisture generated during cooling.