Robinair 17801B Recovery, Recycling, Recharging Unit - Manual (Page 46)

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44
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Runs but will not shut off
Problem: Oil drain valve is open.
Solution: Close the oil drain valve.
Problem: There is a leak in the A/C-R system.
Solution: Locate and repair all system leaks.
Problem: Hoses are not connected to the vehicle.
Solution: Check hose connections.
Problem: Oil return solenoid is open.
Solution: Replace the oil return solenoid.
RECYCLING OPERATION
Compressor does not start, or stops prematurely
Problem: Power cord is not plugged in, or there is no power at plug.
Solution: Check circuit for power.
Problem: Tank valves are closed.
Solution: Open both valves, and verify hoses are connected to the tank.
Problem: “CH-F” message on digital display.
Solution: Remove and replace the filter-drier (see Replacing the Filter-Drier),
and pull a vacuum before continuing.
Refrigerant does not flow
Problem: Refrigerant supply empty or low.
Solution: Add refrigerant to the tank.
Problem: Tank valves are closed.
Solution: Open both valves, and verify hoses are connected to the tank and
the unit.
Troubleshooting