System and method for thermostat detection of condensate switch tripping

A temperature control system comprising:

• at least one temperature sensor for use in sensing an air temperature of a conditioned space;
• a call for cooling relay configured to generate a call for cooling indication signal;
• a power monitoring circuit comprising at least one of:
• a loss of power (LOP) event counter comprising a power monitoring circuit input terminal and a call for cooling input terminal communicatively coupled to a counting circuit, the LOP event counter configured to generate at least one of a frequency of LOP events and an elapsed time between a call for cooling and an LOP event;
• and
• a variance over a moving time window analyzer comprising a moving time window generator and an elapsed time clock;
• and
• a processing system communicatively coupled to the power monitoring circuit, the at least one temperature sensor, and the call for cooling relay, the processing system configured to:
• receive a call for cooling indication from a thermostat associated with the air conditioning unit;
• detect a pattern of a plurality of loss of power (LOP) to the air conditioning unit events, the LOP events caused by a trip of a condensate drain line switch;
• analyze the detected pattern for at least one of a frequency of LOP events in a predetermined time period and an elapsed time between successive LOP events;
• and
• initiate a condensate line blockage alert when the analyzed pattern meets predetermined condensate line blockage criteria.

A fluid conduit blockage detection system comprising:

• a fluid conduit;
• a switch positioned to detect at least one of a flow and a level of fluid in the fluid conduit, the switch coupled to a device that generates a fluid that flows through the fluid conduit, the switch operative to shut down the device when at least one of the flow is outside a predetermined flow range and the level exceeds a predetermined level range;
• and
• a controller configured to monitor a position of the switch and a call for operation of the device and to determine a pattern of switch tripping versus the call for operation of the device, the controller further configured to transmit a prediction of a blockage of the fluid conduit based on the pattern of switch tripping.