Howdy all and please bear with me: I recently returned home to find my AC unit misbehaving. The compressor was working just fine but the blower/fan was doing nothing. The thermostat outdoor pickup was not functioning and the digital thermostat was acting weird. I suspected a lightning strike or power surge. This is a GOODMAN system using a GGMV951155DXBC LP furnace coupled with a 5 ton heat pump (TXV410). So, after some unsatisfactory probing with the multimeter I did these things: First I replaced the thermostat (BIG BLUE UNIVERSAL 3/2) with a brand new unit. This did not make the fan run. Next, I replaced the control board with the recommended upgrade unit: PCBBF107S. I get the slow green light but the motor still did nothing when either using the thermostat or jumpering red/green (I can hear the relays click, but the motor does nothing). Then, I replaced the motor with a brand-new model specific unit. Still green-lit, relays still clicking, no blower. The last old component was the 24V transformer so I replaced that, as well. (At the terminal block I'm getting 27V plus/minus green to common with green/red jumpered- but only 19V coming off the board at the 16 pin connector or at the motor end of the 16 pin harness). Still green-lit, relays still clicking but the blower motor is still doing nothing. I've got 120V at the motor, no problem. The compressor is firing right up when I kick on the cooling with the thermostat. The fan simply will not trigger. Clearly I am a "component replacer" not an HVAC pro (or even amateur) but I am totally at a loss. Any suggestions would be greatly appreciated. Thanks. J.

I've got an old Lennox Pulse Furnace. I'm trying to start it up for the first time this season and it won't kick on. I can hear the furnace "click", and then click again a few moments later, but nothing else. It seems to do this repeatedly separated by a few minutes without starting the furnace. Any thoughts?