Upon arrival spoke with customers daughter about current issues. Said heat has not been working since last night. Looked at thermostat and found stat set to off. Turned to heat and made sure set point was abouve inside temp (setpoint was 70° and current temp was 61°). Went to furnace, fired up right away, checked filter checked and adjusted gas pressures and made sure furnace kicked into high fire. Once high fire kicked in I turned furnace off and checked dip switches. Brought furnace back on and checked components to make sure everything was functioning normal. No further issues, only problem was thermostat was not set to heat.