I have an Enviro Kodiak 1700 that came with a blower. I hooked the blower up and it didn't work. I was trying to narrow down the cause by bypassing both the fan control and temp sensor (fan worked; fan ok), hooked to fan control and bypassed sensor (fan worked; control ok), then hooked to sensor and bypassed the control (fan DIDN'T work; sensor is culprit). So I assumed it was the sensor, bought another and it still doesn't work. This got me thinking: what's the purpose of the sensor? Does it have to get to a certain temp before it turns on? Is there a danger in not using the sensor and just bypassing it? FWIW, the wiring schematics were followed.