In this changed code you wrote, the sentence in line with wend, you said: 'go back and check while again. right now timer = 1 and rele = ? 'if releay also = 1, you will never get out of the loop'.

Yes, you are right. The rele is = 1 but after some of time depends of ne 555 chip and potentiometer, otherwise it is = 0 when timer working. When relay is = 1 timer is still ON! but not working until turn the transistor on and off again (+12V for timer). That is big problem, I have to go out from that loop and do testing again in while, and then go back into previous loop. But without colision of theese two loops.