Plugged it in yesterday after replacing the relay and it started right up. Put my brew kettle in with about 6 gallons of water and its been running overnight. Within a couple of hours, it dropped from room temp to 56, and this morning it was at 42. I adjusted the controller at about 4:30 this afternoon from 5 to 4 and the temp rose to 44. About 7pm I adjusted it to 6-ish and it hasn't changed much.
How can I break that 40-degree barrier? I'd be really happy at 38-39.