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34800

Choose from the following issues to view the related trouble shooting tips.
  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
  4. No display when main power switch is on
  5. Audible tone sounds during charging
  6. Refrigerant does not flow
  7. Vacuum pump runs, but low side gauge does not register an appropriate vacuum
  8. View error definitions

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 INSTALLING THE TANK
   

 

HI-P message on digital display

 

Be sure tank valves are open and hoses are properly connected to the tank. Check the scale calibration. See CHECKING THE SCALE.

   

 

CH-F message on digital display

 

Remove and replace the filter-drier. See REPLACING THE FILTER-DRIER and be sure to pull a vacuum
   

 

Faulty components

 

Call service center

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
   

 

Faulty components

 

Call service center

3. Runs but won't shut off

 

Oil drain valve open

 

Close the valve
   

 

Leak in vehicle system

 

Locate and repair all system leaks
   

 

Hoses are not properly connected to the vehicle

 

Check hose connections
   

 

Faulty components

 

Call service center

4. No display when main power switch is on

 

Unit unplugged

 

Plug the unit into a power source
   

 

No power at wall outlet

 

Locate the problem with the outlet or change outlets
   

 

Blown fuse on circuit board

 

Replace fuse

5. Audible tone sounds during charging

 

Transfer stopped or too slow

 

Start the A/C system and pull the remaining refrigerant into the system. See RECHARGING THE A/C SYSTEM. Be sure the blue hose has access to the tank
   

 

Refrigerant supply empty

 

Add refrigerant to the tank
   

 

Blue LIQUID tank valve closed

 

Open the blue LIQUID tank valve

6. Refrigerant does not flow

 

Refrigerant supply empty

 

Add refrigerant to the tank
   

 

Flow restriction

 

Check all connections on the A/C system (the R-12 side should have adapters on both the low and high side fittings and the couplers on the R-134a side should be open). Check the blue hose connection at the tank's blue valve - be sure it is getting access. Check the tank's blue valve - it should be open. Be sure the A/C system has been evacuated for a minimum of 15 minutes.

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

 

Pump oil contained

 

Flush and change the vacuum pump oil
   

 

Oil injector line loose

 

Check connections
   

 

Manifold leaking

 

Check connections
   

 

Low side valve closed

 

Open low side valve
   

 

Hose improperly connected to pump

 

Check connections

8. Error definitions

ADD

There is less than five pounds (2.4 kilograms) of refrigerant in the tank.
   

CAL

The scale is out of calibration. Calibrate the scale.
   

CH-F

The unit has recovered 300 pounds 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.
   

CON

The vacuum pump will run continuously. Press SHIFT/RESET to stop.
   

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 the unit tank's red valve is open.
   

OIL

The vacuum pump has frun 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.
   

SCAL

The scale is damaged, disconnected, out of calibration or overloaded (it cannot exceed 45 pounds or 20.5 kilograms). Calibrate the scale.

   

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.

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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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