Patent ID: 6996997

Claim:
A method of performing a diagnostic check on a temperature control unit, the method comprising: initiating a first operation of the unit; monitoring at least one function of the unit during the first operation; storing information relating to the at least one monitored function of the unit from the first operation; determining from the information relating to the at least one monitored function whether the unit has at least one malfunction during the first operation; setting a flag to one of a first setting and a second setting during the first operation, the flag being set to the first setting if the unit has no malfunction during the first operation and the flag being set to the second setting if the unit has at least one malfunction during the first operation; terminating the first operation of the unit; enabling the diagnostic check after termination of the first operation when the flag is set to the first setting; and enabling a second operation of the unit if the diagnostic check does not determine that the unit has a malfunction that prevents the diagnostic check from completing.