A unitary control for operating at least the fan and compressor of a
climate control apparatus in response to signals received from a
thermostat, the unitary air conditioning control includes a circuit
board, a microprocessor on the circuit board; a first relay on the
circuit board operable by the microprocessor, to connect a fan connected
thereto to line voltage, and having first and second contacts at least
one of which is connected to the microprocessor; and a second relay on
the circuit board operable by the microprocessor, to connect a fan
connected thereto to line voltage, and having first and second contacts
connected to the microprocessor.