J.P. Instruments EDM-960

For Your Safe Flight Page | 61
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.