Seaward Supernova XE - Manual (Page 71)

Sequence Warning Faults
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The Tester will fail the earth check if it is being supplied with a
balanced supply (eg. isolating transformer) since it will detect phase
voltage on both L and N supply connections. Only continue if certain
that the supply is balanced and the earth on the Tester connection is
secure.
If all the above is checked the Supernova XE maybe faulty contact
Seaward for repair
The unit then completes an internal check. If any faults are found
then the following message will be displayed:-
--------------------WARNING--------------------
INTERNAL RELAY FAULT.
CANNOT PROCEED.
The Supernova XE is faulty and should be returned to Seaward for
Repair
Sequence Warning Faults
If you enter a testcode which involves tests the Supernova XE cannot
perform then you may see one of the following warnings.
--------------------WARNING--------------------
THE SELECTED TESTCODES SPECIFY
THAT LEAKAGE, LOAD AND/OR
POLARITY TEST SHOULD BE
PERFORMED.
THIS IS NOT POSSIBLE ON THE
SUPERNOVA XEWHEN THE 115V
ADAPTOR IS SELECTED.
THESE TEST TYPES WILL BE
SKIPPED. PRESS START BUTTON TO
CONTINUE