Responded to a report of a leak in the living room and found significant water and black debris around the baseboard. Inspection revealed a hole in the baseboard piping, likely caused by freezing. I isolated the first-floor heating zone and confirmed that the upstairs zone was leak-free and circulating properly, with the upstairs thermostat set to 70 degrees and the first-floor thermostat off. I restored water to the house and verified that no additional leaks were present. Both downstairs mini-split units were turned on and set to 75 degrees in heat mode to maintain temperature. During testing, I found that the first-floor thermostat was intermittently opening and closing the call for heat, indicating a malfunction that may have prevented the zone from heating correctly. We will return shortly to evaluate the necessary repairs.
