I have installed X 2 CS P80V1JP cassettes model CUP80H1HP condense units (second hand equip at customers request) & now having problem with filter clean light keeps flashing on hard wire controller have tried reset button with no luck. Have been in touch with tech guys at panasonic tried thier ideas still no luck they now suggest new pcb on both unit any other ideas?????????????????. Also any ideas on dip switch settings.