The fan was rattling loudly on the out door unit and now has quit completely . The house began to heat up so we shut down the air conditioning, Any ideas what could be wrong

A fan blade may be broke or the hub has broke loose from the fan blades on the condenser motor. Will it spin freely if you try to spin it? (WITH THE POWER OFF)! Is it loose or out of balance?

My husband will look at it in the morning and see thanks we'll let you know

Good luck it maybe a simple fix.

All fixed a loose wire was causing the rattle and now its all fixed thanks