2000 Ford Focus Wagon AC & Blower Failure

My partner was driving her car with the AC and blower working fine. She turned off the car, got out, went in a store, came out and the blower and AC would not turn back on.
I checked all the fuses in the fuse box and fuses and relays in the power distribution box and all were fine.
Anyone know if there is an AC / blower relay under the dash or hood somewhere else? Any ideas would be appreciated.
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Does the blower work on the fastest setting - and not on the first 3 settings?
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Alan
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No, blower is totally dead. Already checked the resister block (replaced that last summer) and it is fine. Also tried bypassing it just to make sure and blower still did not work.
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The Hayes manual for my UK focus gives the 12v path as
battery +ve terminal to ignition relay ignition relay to fuse 1 fuse 1 to fuse 64 fuse 64 to blower motor
On the fastest blower motor switch setting the other side of the blower motor is OV
fuse 1 (orange 40 Amps) = main power to electrical system so if lots of other things works then this is probably OK)
Fuse 64 (green 30 Amps) = Heater Blower motor only. On the fastest blower motor switch setting the other side of the blower motor is OV
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Alan
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