Z
zbauerAug 20, 2025
Why does my JPI Avionics Display show '--- GPH'?
- JJames WallaceAug 20, 2025
Dashes displayed instead of GPH indicate that there are no fuel flow transducer signals. To resolve this, have a mechanic verify the sensor and wiring.
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Dashes displayed instead of GPH indicate that there are no fuel flow transducer signals. To resolve this, have a mechanic verify the sensor and wiring.
How to fix off-scale EGT columns on my JPI Avionics Display?
Off-scale EGT column readings in your JPI Avionics Display usually mean the EDM is in Normalize view (blue EGT scales). To return to the Standard mode, hold the LF button.
What to do if my JPI EDM-930 freezes or is incorrect?
If your JPI Avionics Display freezes or shows incorrect data, it might be due to a power transient causing the processors to malfunction. Try recycling the power to the EDM.
Why does my JPI Avionics Display show '--- H.M'?
Dashes displayed instead of H.M indicate that there are no fuel flow transducer signals. This may be due to no GPS signal. Check the wiring.
How to fix a missing column in the JPI EDM-930 Avionics Display on start up?
A missing column in the JPI Avionics Display upon start up means that the diagnostic routine has found an open line or probe with no connection. Replace the EGT or CHT probe shown in the error message.
What to do if there is a missing column in the JPI Avionics Display during flight?
A missing column in the JPI Avionics Display during flight means a reading that is jumping around or incorrect. The probe is removed from the line up. Replace the EGT or CHT probe shown in the error message on the next flight.
Why is there a red 'X' on a single gauge of my JPI EDM-930 Avionics Display?
A red ‘X’ drawn through a single gauge on your JPI Avionics Display indicates a measurement out of range. Have a mechanic verify if it is the engine or the sensor and replace as necessary.
Why does LeanFind on my JPI EDM-930 Avionics Display find a peak too soon?
If LeanFind on your JPI Avionics Display finds a peak too soon, it could be due to failure to pre-lean before performing LeanFind or stopping while leaning, or leaning too slowly. Continue to lean without stopping and lean more rapidly.
Why is there a red 'X' on all gauges for an engine on my JPI Avionics Display?
A red ‘X’ drawn through all gauges for an engine on your JPI Avionics Display indicates a DAU failure or DAU communications error. Check the power to DAU and wiring harness connections.
What does 'OPEN PRB' mean on my JPI EDM-930?
If the JPI Avionics Display shows 'OPEN PRB', it indicates an open probe. This means the wiring to the probe is open circuit. Check the wiring and crimps. Swap probes to troubleshoot.
General| Brand | JPI |
|---|---|
| Model | EDM-930 |
| Category | Avionics Display |
| Language | English |
Installation guidance for single-engine aircraft, covering display and RAD placement.
Guidance on selecting the optimal mounting location for the EDM display.
Details the ammeter shunt configuration for charge/discharge monitoring.
