Mitsubishi Air Conditioner MSZ-GS09NA

Ensure the drain hose of the unit is not cut.

Wrap the extension drain hose with insulation if it passes through a room.

Ensure the drain hose points downward for easy drainage.

Connect the provided drain hose with a field-supplied drain hose if it is too short.

Insert the drain hose securely into a hard vinyl chloride pipe when connecting.

Ensure no stress is applied to the connecting portion of the drain hose after installation.

Connect the gauge manifold valve to the service port of the stop valve on the gas pipe side of the outdoor unit

Fully close the stop valve on the liquid pipe side of the outdoor unit

Close the stop valve on the gas pipe side of the outdoor unit almost completely

Start the emergency COOL operation

Stop the emergency COOL operation

Insert power supply plug into the power outlet and/or turn on the breaker

Press the E.O. SW to perform a test run for 30 minutes

Inspect the indoor/outdoor unit connecting wire (A) if the upper lamp blinks every 0.5 seconds

Emergency COOL mode will start after the test run

Stop operation by pressing the E.O. SW until all LED lamps turn off

Refer to operating instructions for details

Remove service port caps from stop valves on both sides of refrigerant lines

Connect gauge manifold to ports of stop valves

Ensure valve core is in closed position before attaching control valve to service port

Tighten part A after ensuring valve core is closed

Avoid tightening part A or turning the body when valve core is open

Evacuate the system to 4000 microns from both service valves