Bob and Tim have gotten together after work to discuss the oil furnace service call that they were on earlier in the day. Bob had asked Tim if he would be willing to stay after work and review the call and Tim readily agreed.
Bob said, “When we arrived on the call, the furnace would not fire and the owner had reset the red reset button several times. We decided to give the furnace a complete tune-up before we tried to start it because we found evidence of previous adjustments, such as different size oil nozzles. It was a big unknown until we got the system to a baseline condition.”