Chrysler Repair: 98 Plymouth Grand Voyager Blinking Lights, plymouth grand voyager, slide pots

Question
My Voyager's air conditioner is not working. If I attempt to just use the vent function I get hot air only. For the first 20 minutes of run time I get 4 Blinking lights on the heat/air control panel. No codes from the computer.

Thanks for any help you can offer.
Dale

Answer
COOLDOWN TEST ENTRY
TO INITIATE TESTS:
Set Blower motor ON HIGH
Set Mode position to Panel
Open all A/C outlets
Set Temperature to Cold (Both slide pots if equipped)
Depress WASH and A/C simultaneously for 5 Seconds
NOTE: Prior to start of test, If the evaporator is already cold, the system will fail test. To correct, operate system with A/C OFF and the blower motor ON high for three minutes prior to starting test.

RESULTS:
All LED's will turn on for 5 Seconds
Cooldown Test is running when A/C and RECIRC. are alternately flashing. If A/C and RECIRC. are flashing simultaneously, Cooldown has failed.