Upon arrival was unable to gain access to roof. No one in management office. And no one answering. Performed a three system maintenance checking heating and cooling. Checked all electrical, mechanical and safety components. Checked heat exchangers, amp draws, capacitors. Found on RTU1 heat is not working. System has a bad ignition control board not sparking the igniter. RTU3 has a bad draft motor. Motor getting power but not coming on. Put quote together and parts are in stock at carrier. Tried calling Kelly but could not get through.