When your Everchill 12V refrigerator's freezer works but the fridge compartment doesn't cool, it's typically caused by a faulty damper control, blocked air circulation, or temperature sensor issue. Start by checking the damper door between compartments and verifying proper airflow.
When your RV air conditioner hums loudly but produces no airflow, it's typically caused by a seized fan motor, blocked vents, or debris in the fan assembly after sitting unused. Start by checking for obstructions and cleaning the unit thoroughly.
Your 1989 Ford Tioga's 460 EFI system is experiencing classic symptoms of fuel pressure loss, likely due to a failing fuel pump or clogged pickup screen in the tank. The dead battery jump may have damaged the fuel pump relay circuit.
A loud humming noise with a non-starting compressor typically indicates a failed start capacitor, bad compressor, or electrical issue. The start capacitor is the most common culprit and can often be replaced by DIYers with basic electrical skills.
Heat pump running one second then stopping usually means bad capacitor, low refrigerant, or thermal overload. Check capacitor first - its the most common cause and cheapest fix.