1. A method for diagnosing a fault condition in a climate system, the method comprising: receiving current parameters from a climate system in the fault condition, the current parameters including a plurality of current measured and estimated data from the climate system; determining a first set of transition probabilities based on the current parameters, the first set of transition probabilities providing a likelihood that a current operating condition of the climate system will transition to a respective condition; determining a second set of transition probabilities based on historical parameters from the climate system operating under normal conditions, the historical parameters including a plurality of historical measured and estimated data from the climate system, the second set of transition probabilities providing a likelihood that the climate system will transition to a respective condition under normal conditions; calculating an anomaly score for the climate system from the first set of transition probabilities and the second set of transition probabilities; when the anomaly score is above a predefined threshold, generating automatically a diagnosis of a first problem causing the fault condition; altering operation of the climate system in response to the diagnosis of the first problem, the altering operation of the climate system comprising replacing at least one mechanical component of the climate system.