Found tripped float switches at secondaries on both upflow units due to restriction in primary drain that leads to sink. Sink not draining well either. Water in auxiliary drain pan. Homeowner authorized drain clearing package. Cleared primary with nitrogen, installed quick blast fitting, and put drain clearing fluid down primary. After repairs to drain line tested primary drain by pouring water down drain line to make sure that it is draining properly ran a drain test on the sink. System now draining and functioning properly again at this time. Recommend annual maintenance to clean outdoor condenser coils. Dispatch will reach out to homeowner to schedule his annual maintenance.