Checked operation of GAR Convection Oven and the unit would cook for a little while and then flash not done. I checked the probes and they homed out fine. I spoke to Dwyane at Fastron and he had me run some addition checks and found the probe manifold is intermittently working and causing a loss of signal. I gave the part number to the manager to order, they will call us when it comes in. 6-29-18 I let the unit cool for a few minutes then removed the faulty probe manifold and installed new connectors where needed. I installed the new manifold and checked operation. The unit is working fine at this time.