Raytech USA, Inc.
All rights reserved. No portion may be reproduced without written consent.
23
Troubleshooting
GENERAL
11 – 0
At power on, the WR50-12 internal calibration and check sequence is performed.
Upon completion of the check sequence the test set will proceed to the “Main Screen”.
Should there be any problem with the test set an error message will appear.
SYSTEM DOES NOT DISPLAY ANYTHING:
1. Check the display for any Initialization.
2. Check the fuse. The fuse is located in the Power switch / plug connector.
SYSTEM POWERS ON BUT THE DISPLAY FADES OUT OR BLINKS:
1. Check the input power line for faults.
2. If an extension cord is being used, check the size and condition of the cord. An extension
cord should not exceed 25 feet long and should be at least #12 wire minimum.
TEST CURRENT CANNOT BE TURNED ON.
1. Is the Emergency stop switch pushed in? Turn to release it.
2. Is the system connected in an excessive interference area?
“WARNING Rx TOO HIGH” or “+++.+” IS DISPLAYED.
1. A warning message, ”Rx Too High” or “+++.+” will be displayed if the resistance being
measured is too high for the range selected.
The ”+++.+” is displayed when no input is measured on the +P & - P terminals.
2. The current leads total resistance has exceeded the current capability of the instrument.
Reduce the current lead length or increase the wire gauge of the current lead used.
ERRATIC OR ERRONEOUS READINGS
Possible causes
1. Test lead damaged or not connected.
2. Poor test lead connection.
3. Poor supply power. Check extension cords, plugs and cables carefully.
4. Test set attached to a “Live” load or high interference load.
The WR50-12 is designed to be trouble free. If problems or questions do arise, please contact
our service support group; 888 4 THE SPY (888 484 3779).
