Can You Troubleshoot These Common HVAC Problems Like a Pro?Share:FacebookPinterestTwitterMailThe blower runs continuously even when the system is off. What should be checked first?12%Next Correct Incorrect A stuck blower relay can cause the fan to run nonstop. The blower runs continuously even when the system is off. What should be checked first? Blower relay stuck Clogged condensate line Open limit switch Dirty evaporator coil 12%