top of page

MemoryPAT/Memory PAT BLU FAQ's

My tester wont charge up

Check your charger and USB cable - The MemPAT requires a 5v USB charger and cable. The green charging LED will not illuminate immediately but should come on after 10 seconds. Try a different charger or cable if the charging light fails to illuminate.

My tester wont stay charged for long

Connect your tester to the charger and charge it for 30 minutes. The green Charging LED on the tester should illuminate while charging is taking place. After charging, check the tester again to see how many tests the unit will carry out before giving a Low Battery warning. If the problem persists, please contact our Sales Department to have the tester sent in for checking and battery replacement.

My tester only works if I plug in the charger

This usually means that the battery has failed and needs replacing. It is not advisable to continue operating your tester, powered from the charger, with a failed battery as this can cause the battery to overheat. Please contact our Sales Department to arrange a repair.

My tester wont work at all

Charge the unit for a maximum of 30 minutes. Keep checking the tester at regular intervals to see if the green Charging light comes on. If the battery is very flat, the tester will appear completely dead until the battery voltage is raised to a sufficient level. If the tester still appears dead after 30 minutes on charge, please contact our Sales Department to arrange a repair.

Some of the buttons wont work

The front panel connector may have become dislodged from the socket on the PCB. Please contact our Sales Department to arrange a repair.

Everything fails Earth Continuity

Sometimes it may appear that every test is failing. This can often be put down to operator error but it's worth doing some basic checks to ensure that the test equipment is working correctly before calling for help.

Check the Earth Test Lead (ETL). Plug the ETL into the test socket on the tester and then put the probe end of the ETL into the Earth socket of the 13A test socket on the tester.


Carry out a Class 1 test and check that the Earth Continuity test passes. Ignore the Insulation Resistance reading for the purposes of this test. If you have an older type of ETL with a fixed crocodile clip on the end, insert a small screwdriver into the Earth socket of the 13A test socket and then attach the crocodile clip to the blade of the screwdriver. Click HERE to see an example of this. 

Extension leads / IEC leads keep failing Earth Continuity

If the extension lead is failing on Earth Continuity check that the lead length is set correctly on the tester. The default setting is for testing short leads of 1m or less in length. Press the Long Lead button to set the limits for longer leads, as shown on the display. If the lead length is correctly set but the test keeps failing, check the IEC test socket on the tester. The Earth pin of the socket can sometimes become tarnished or collect dirt due to lack of use or the socket facing upwards. Lightly scrape the outer edges of the Earth pin in the socket with the blade of a flat screwdriver to ensure a clean connection.

Extension Leads / IEC leads / PAT Adaptors keep failing Polarity

Check the fuse in the mains plug end of the extension lead or IEC lead. A blown fuse will cause a polarity error. Some PAT adaptors deliberately have a broken Live connection so that it's not possible to power a 110v appliance through a 110v to 230v PAT adaptor. The PAT adaptors supplied by First Stop Safety have all wires connected so that cables will pass polarity tests but the adaptors are clearly marked Not for Mains Use.

Error Codes

This indicates an internal failure. Depending on the nature of the fault, it may only occur during certain types of test, eg. Class 1 but not Class 2, or may occur on all tests. The error message also advises charging the battery for an hour and then repeating the test. Occasionally, the error may be caused by a flat battery, so it is advisable to try charging the battery first. If the problem persists, please contact our Sales Department to arrange a repair.

USB Device not recognised

Sometimes, the computer will fail to recognise the MemPAT when connected to download test results. The MemPAT will begin to charge its battery when connected to the computer. Sometimes, this can cause the computer to fail to recognise the MemPAT. Try 'waking up' the tester first using the following procedure:

Press one of the two Memory buttons on the tester. This will switch on the tester and the display will illuminate and show the test results stored in memory. Plug in the USB cable to the computer while the display is still illuminated. You may need to try this procedure more than once before it is successful.

Need to see FAQ's for a different tester? Click on the one you want to view.

BattPAT PAT Tester
bottom of page