Air conditioning /wiring problem???????

[RUN-EM]

Symptoms.....driving car with air con on. Loss of air con and resulting warm rush of air. No smell of burned wiring. Now neither heat or air is running. No blown fuses. Central dash heating/air control unit replaced and no difference. Blower motor does not run now. Wires to air con compressor under hood intact. Wires to monovalve functioning and clean. Haven't had time to check much else.

Any body got any ideas?

Regards,

Run-Em