J.P. Instruments EDM 960 Twin Pilots Guide - Manual (Page 58)

For Your Safe Flight Page 53
Diagnostic Messages
The following displays indicate a malfunction in the system:
Startup and Operational Diagnostics
0.0 GPH Zero’s indicate Fuel flow is too low to register
--- GPH Dashes indicate No fuel flow transducer signals
--- H.M Dashes indicate No fuel flow transducer signals
OPEN PRB
Open probe. Wiring to probe is open circuit. Check
wiring and crimps. Swap probes to troubleshoot.
BAD-PRB
Bad probe. Erratic reading. May be poor electrical
connection. Swap probes to troubleshoot.
Red ‘X’ drawn
through a single
gauge Measurement out of range.
Red ‘X’ drawn
through all
gauges for an
engine DAU failure or DAU communications error.
Check power to DAU and wiring harness
connections.
CAL ERR Calibration error. Return unit to factory.
DSP XXX Internal communication error. Return unit to factory.
COMM ERR Internal communication error. Return unit to factory.
NO I 5 MV Calibration error. Return unit to factory.
NO 50MV Calibration error. Return unit to factory.
NO 2.5V Calibration error. Return unit to factory.
PWR DWN Power down the instrument and power up again.
WARNCAL,
WARNCFG Transient warning messages. If they persistently occur,
return the unit to JPI for repair.
HOBSERR The time of the most recent flight may not be reflected in
the HOBBS meter.
HOBSBAD
The HOBBS data has been corrupted. The HOBBS
meter will be cleared.
HANGCFG,
HANGCAL
Internal system errors. Return unit to factory.