Came out to a no heat call, found tank low on oil and system off on lock out. Replaced nozzle, checked and adjusted pump pressure to 180psi, adjusted airband to 4.5. Running efficiently at 11.1co2 with zero smoke and zero vacuum. Signed up for oil comfort plan with automatic oil delivery and a list of parts covered under plan. Will come back out to do full comprehensive oil tune up also covered under oil plan.