Robinair Trouble Shooting Tips 12134b

Choose from the following issues to view the related trouble shooting tips.


RECOVERY OPERATION
		1. Compressor does not start or stops prematurely. 2. Runs a short time, but does not complete recovery. 3. Runs but won't shut off.

	RECYCLING OPERATION
			4. Compressor does not start or stops prematurely. 5. Moisture indicator will not turn green after evacuation is complete. 6. Refrigerant does not flow.

EVACUATION OPERATION
		7. Vacuum pump does not start. 8. Vacuum pump runs, but low side gauge does not register an appropriate vacuum.

RECHARGING OPERATION
		9. No power when Main Power switch is on - no display showing. 10. Audible tone sounds during refrigerant transer. 11. Refrigerant does not flow 12. View Error/Message Codes


	1. Compressor does not start or stops prematurely

	Power cord not plugged in or no power at plug
	Check circuit for power

	MAIN POWER switch is off
	Turn on switch

	FULL message on digital display
	Change tanks. See "Preparing a Refrigerant Tank".

	HI-P message on digital display
	Be sure tank valves are open and hoses are properly connected to the tank or check the scale calibration (see "Checking the Scale Accuracy") or check the two-amp fuse on the main board.

	CH-F message on digital display
	Remove and replace the filter-drier. See REPLACING THE FILTER-DRIER and be sure to pull a vacuum before continuing


	2. Runs a short time, but does not complete recovery.

	Tank valves closed.
	Open both valves and be sure hoses are properly connected to the tank

	Manifold valves closed
	Open both valves.

	Adapters not in use; couplers closed.
	Install adapters; open couplers.


	3. Runs but won't shut off.

	Oil drain valve open.
	Close the valve.

	Leak in vehicle system.
	Locate and repair all system leaks (see Maintenance Instructions).

	Hoses are not properly connected to the vehicle.
	Check hose connections.

	Adapters not in use; couplers closed.
	Install adapters; open couplers


	4. Compressor does not start or stops prematurely.

	"CH-F" message on digital display.
	Remove and replace filter-drier (see "Replacing the Filter-Drier"), and be sure to pull a vacuum before continuing.

	Tank valves closed.
	Open both valves and be sure hoses are properly connected to the tank.


	5. Moisture indicator will not turn green after evacuation is complete.

	Wet filter-drier cartridge.
	Remove and replace filter-drier (see "Replacing the Filter-Drier"), and be sure to pull a vacuum before continuing.

	Faulty moisture indicator.
	Remove and replace the moisture indicator.


	6. Refrigerant does not flow.

	Refrigerant supply empty or low.
	Add refrigerant to the tank.

	Tank valves closed.
	Open both valves and be sure hoses are properly connected to the tank and the unit.


	7. Vacuum pump does not start.

	"U-HI" message on digital display.
	Recover all refrigerant before pulling a vacuum.

	Vacuum pump unplugged
	Plug the pump into the vacuum pump power connector on the unit.

	Vacuum time not entered.
	Program the required time for vacuum.


	8. Vacuum pump runs, but low side gauge does not register an appropriate vacuum.

	Pump oil contaminated.
	Flush and change the vacuum pump oil.

	Charging line loose.
	Check connections.

	Manifold leaking.
	Check connections.

	Low side valve closed.
	Open low side valve.

	3/8" hose improperly connected to pump.
	Check connection.


	9. No power when Main Power switch is on - no display showing.

	Unit unplugged
	Plug the unit into a power source.

	No power at wall outlet.
	Locate the problem with the outlet or change outlets.


	10. Audible tone sounds during the refrigerant transfer.

	Transfer stopped or too slow.
	Close the high side valve, then start the A/C system and pull the remaining refrigerant into system (see "Recharging the A/C System), or be sure the blue hose has access to the tank; also be sure there are no obstructions and that the hose is properly connected.

	Refrigerant supply empty
	Add refrigerant to the tank.

	Tank valves closed
	Open both valves and be sure hoses are properly connected to the tank and the unit

	LIQUID tank valve closed
	Open the LIQUID tank valve and be sure the blue LIQUID hose is properly connected


	11. Refrigerant does not flow.

	Refrigerant supply empty
	Add refrigerant to the tank.

	Tank valves closed.
	Open both valves and be sure hoses are properly connected to the tank and the unit.

	Flow restriction.
	Check all connections of the A/C system, or check the blue hose connection at the tank's blue valve - be sure it is getting access, or check the tank's blue valve - it should be open, or be sure the A/C system has been evacuated (vacuum pump running) for a minimum of 15 minutes of vacuum.


	12. ERROR/MESSAGE CODE

ADD	There is less than six pounds of refrigerant in the tank. Add refrigerant to the tank. See "Adding Refrigerant to the Tank."

CAL	The scale is out of calibration. See "Calibrating the Scale" or call the factory at (800)822-5561

CH-F	The unit has recovered the recommended maximum amount of refrigerant. Press SHIFT/RESET and FILTER at the same time, then replace the filter-drier.

CH-P	The vehicle's A/C system has less than 25psi. Do not attempt recovery if the A/C system has no refrigerant. Check for restrictions at access fittings. Check to be sure that manifold valves are open. To continue, press HOLD/CONT.

CL-L	The low side clearing routine is in progress. This occurs when you press RECOVER and can last up to four minutes.

CLR	The unit is in the self-clearing process.

CON	The vacuum pump will run continuously. Press HOLD/CONT to stop.

CONT	This message prompts you to press any key to start the self-clearing process.

CPL	The specified cycle function (recovery, evacuation, charging or adding refrigerant) is complete.

FIL	The filter-drier changeout is in progress.

FULL	The refrigerant recovery tank is full. Replace the tank.

HI-P	The discharge pressure is above 435 psi. Check to be sure both tank valves are open.

OIL	The vacuum pump has run for 10 hours. While the OIL message is displayed, press SHIFT/RESET and ENTER at the same time to reset the timer. Then change the vacuum pump oil.

OIL/DR N	This altnernating display indicates that the unit has reached the correct pressure and prompts you to open the oil drain valve to drain the oil.

SCAL	The scale is damaged, disconnected, out of calibration or overloaded (it cannot exceed 45 pounds or 20.5 kilograms). Call the factory at (800) 822-5561.

U-HI	There is positive pressure on the vacuum pump. Press SHIFT/RESET and then RECOVER to remove the pressure, than continue the evacuation procedure.

99LB	The maximum amount displayed during recovery is 99 pounds. Press SHIFT/RESET to clear the display.


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	Customer Service: 800-628-6496 / Technical Service: 800-822-5561
	Robinair / SPX Corporation / 655 Eisenhower Drive / Owatonna, MN 55060


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