Trial and error method starting from common temperature control parameters:
Kc = 2-10 (Reduce overshoot by decreasing)
Ti = 2-10 min (Reduce overshoot by increasing)
Td = 0-5 min (start with 0 especially with a noisy measurement)
(Proportional Band % = 100 / Gain; Gain of 2 = 50 PB%)
PI...