I have purchased an Inkbird TC-1000 temp controller. It has ran great for a little over a year. It operates my kegerator in the shed. This fall when temperatures dipped into the 40’s my kegs would freeze. The temp was set to 35, but the kegerator was below zero. The inkbird did not display the red led calling for cold, but it was still running. When I warm up the inkbird with a heat lamp then the cooling stopped. Seems the inkbird is at fault. Don’t know if I should replace with same or upgrade. The TC-1000 is really cheap. Any ideas or observations.