I have a 1991 Monaco with no responsive climate control. Fuse is good. Now?

Hello, If the fuse is good, check that power is entering and leaving the control unit for the climate control. The climate control unit is basically a perimitive computer, and it may need to be disconnected and reconnected for a hard reset, or the unit may be faulty. If you turn the fan on, but nothing works, check that power is leaving the unit and going to the fan. Note, this could be a combination of problems, and checking the blower motor resistor and blower motor for proper function is needed.