No cooling call — client reports indoor fan not coming on with a call for cooling, but outdoor unit continues to run. Started diagnostics at the furnace. Verified thermostat wiring and furnace wiring — all OK. Tested fan operation in both heat mode and fan-only mode — fan runs normally in both. However, with a call for AC, the fan does not turn on. Checked blower speed taps — switching to the AC-designated tap didn’t resolve the issue. Temporarily reassigned an unused high-speed tap (not ideal — it’s too much CFM for this 1.5-ton unit) but it got them cooling with a 12°F split for now. Inspected wiring from the furnace board to the ECM motor — connection is secure, wire tests out fine. Issue appears to be in the blower motor module not responding to the correct AC signal. Motor needs to be replaced. No warranty on file. If under warranty, this would be covered. Recommended full furnace and AC maintenance — system is from 2017 and hasn’t been serviced. Need maintenance on file to sup