Aaon HVAC Unit RN-010-3-0-EA

Shut off all electrical power to the unit to avoid shock hazard or injury from rotating parts.

Check gas pipe for leaks before startup.

Disconnect all wiring on the heat exchanger.

Disconnect flex gas lines and pull out of the way.

Remove screws around the perimeter of the heat exchanger face plate that connect it to the unit. Only the outermost screws should be removed.

Pull the heat exchanger straight back and out of the unit.

Was it necessary to remove some of the control door jambs?

Shut off all electrical power to the unit to avoid shock hazard or injury from rotating parts

Inspect blower wheels and bands for excessive dust build up

Is there excessive dust build up on blower wheels?

Clean blower wheels and bands if excessive dust is found

Check if blower wheels are balanced after cleaning

Inspect for any signs of vibration or component failure

Ensure all necessary cleaning agents and tools are available

Verify the following approved cleaning agents are available

Avoid using harsh chemicals, household bleach, or acid cleaners

Ensure proper protective equipment is worn

Clean the coil with Enviro-Coil Concentrate

Remove any grease or oil film with the approved cleaning agent

Check for debris or foreign matter in the vent outlet

Is the vent outlet clear of debris?

Clean the vent outlet if debris is found

Was the vent outlet cleaning successful?

Check vent outlet each time air filters are changed

Shut off all electrical power to the unit to avoid shock hazard or injury from rotating parts.

Remove surface loaded fibers or dirt

Was the tool applied in the direction of the fins?

Is the water temperature less than 130°F?

Is the water pressure less than 900 psig?

Perform a low velocity clean water rinse.