
Problem
Possible Cause
Action
Unit will not power-up
a)No power input
b)Bad fuse
c)Bad Power supply
•Check fuse (F1) located
next to TS1 on main board.
•Check for correct power
supply voltage at TS1 on
main board.
If fuse is OK and unit
still won’t power up, call
Spirax Sarco for additional
assistance
Meter does not initialize
Electromechanical
interference
•Check meter power
cycles.
•Press and release F1
and F2 at the same time;
the display will enter
Engineering screens.
•Press F1 to get to screen
#23; record power cycle
value.
•Press F4 to return to
normal operation; monitor
meter until problem returns.
•Return to screen #23 to
see if power cycles have
increased; microprocessor
is resetting due to EMI
electrical noise entering the
meter.
•Check Power input and
output cables grounding
and routing.
98
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Troubleshooting: General