Robinair 16009 DiscovR R134a Refrigerant Identifier - Manual (Page 9)

16009 DiscovR R134a Refrigerant Identifier 7
Fault Codes & Troubleshooting
Fault Codes
If the DiscovR unit displays a fault light, the code is determined
by counting the number of times the fault light flashes.
Code 1 = Calibration unstable
Code 3 = Calibration error
Code 4 = Temperature over the range
Code 5 = Calibration compensation error
If any of these codes display, disconnect the unit from its power
source and bring it to a room temperature (60°– 80° F) place.
Check the vehicle battery voltage, and confirm it is within
specified range. Fully squeeze the rubber calibration bulb ten
(10) times, and allow the unit to cool for thirty (30) minutes.
Reconnect the unit to the refrigerant source and retest.
If the fault light persists, or if Code 6 is displayed, contact the
Technical Services Department.
Troubleshooting
no Power – Check for correct battery clip polarity, and full
connection of the plug connector into the unit.
Excess Air/Fail – Check the sample hose for good connec-
tions to the refrigerant source and the unit. Also, check the
brass filter for any oil residue, and replace it if necessary.
Note: Clean the coupler with compressed air before installing a
new filter.