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rotax 4-stroke - instruments & senders
912UL, 912A, 912F, 912ULS, 912S, 914UL and 914F Engines
All information provided here is correct at the time of publishing to the best of our knowledge, but Rotax recommendations may change at any time without our knowledge. It is the engine owners responsibility to ensure that the engine is fit for flight at all times. The information is provided here free of charge and with no obligation from us to the consumer. To ensure that you have the correct and most up to date information, you should refer to the current Installation, Operators and Maintenance manuals for your engine. The information provided here may not be valid for aircraft outside the UK. Click here for ConAir SportsTerms& Conditions, including website usage policy.
ERROR: 01 - damaged values, which are saved in internal memory no 1
The trigger coil for the tach sends a small AC voltage signal to the tach once every revolution of the crankshaft. This signal can suffer from interference from the ignition system, generator or other electronic devices. This causes errors such as a rise in indicated rpm when one mag is switched off, or a jumpy needle.
Minimise such problems by:
- routing the tacho wire separately from the wiring loom and away from ignition leads.
- ground the tacho and shielding wires separately and away from possible sources of interference (such as strobes, mag switches, relays, radios and other instruments).
- use shielded wire
- ground at panel
- add a 100-200 ohm resistor to the trigger coil
- make sure power supply is good, low voltage will often produce an over-reading tacho
- make sure power supply is clean and has a 22,000 microFarad capacitor across the regulator
Erratic rpm could be as a result of a poorly charged battery - reading will often go to full scale if the battery voltage gets low.
Tacho reading high, in particular full scale deflection, could be caused by low/dropping voltage.
Oil pressure is voltage dependant.
Low oil pressure and high oil temperature simultaneously could be an indication of a low voltage problem or a bad earth.
100 mm from EGT flange. 800ºC normal, 850ºC max but 880ºC max at take off power.
Low battery voltage can result in a number of symptoms, such as:
- erratic tacho gauge, including on the ground and full throttle
- noisy radio
- loss of transponder signal
- loss of gps signal
- turbo controller power up problems (914 turbo engines only)
- waste gate seeking I.e. engine revs picking up for a short burst (914 turbo engines only)
- low fuel pressure (914) or power loss on climb out
ERROR: 02 - damaged values, which are saved in internal memory no 2 - usually casued by a flat internal battery - contact Service Centre
ERROR: 03 - damaged values, which are saved in internal memory no 1 and no 2 Service Centre
ERROR: 04 - damaged values in SchecK® memory
ERROR: 05 - damaged values in SchecK® memory and internal memory no 1
ERROR: 06 - damaged values in SchecK® memory and internal memory no 2
ERROR: 07 - damaged values in SchecK® memory and internal memory no 1 and no 2
ERROR: 09 - damaged values in backup memory of Flydat configuration and internal memory no 1
COLD ENGINE - if the oil temperature in a 4-stroke engine does not reach the operating value and, at the same time, the rotation speed has exceeded the set value, the warning message “COLD ENGINE” will show on the display and the lamp control on the panel of the instrument will light up red
ENGINE READY - if the oil temperature in a 4-stroke engine reaches the operating value, message “ENGINE READY”, which informs you that the engine has run warm, will show on the display
OUT OF RANGE - if you use the Flydat over the imit temperature, which is assessed in the technical parameters of the instrument, the warning message “OUT OF RANGE” will show on the display, together with the measured temperature inside the flydat
ERROR! MEMORY FAIL - error in the internal memory, which is used for logging the calibration and configuration values
ACCESS DENIED! - (third) unauthorised attempt to program the instrument by incorrect password
LOW POWER - Flydat is running under the lowest allowed operation range 10 Volts
[---] - if any sensor is disconnected, the three dashes will be shown on the display
[Err] - if the EGT sensor has selected the polarity, the “Err” message will be shown on the display
The silver button is enabled for 20 resets, after those have been used up, the Flydat must be returned to a Service Centre to be reset.
ORIGINAL VERSION WITH CIRCULAR CONNECTOR ON FRONT PANEL - only works with resistive VDO type oil pressure sender. Has to be sent to Service Centre for reset.
VERSION WITH CIRCULAR CONNECTOR & SILVER RESET BUTTON - works with VDO resistive oil pressure sender and some can be upgraded to work with Honeywell solid state oil pressure sender. The silver button is enabled for 20 resets, after those have been used up, the Flydat must be returned to a Service Centre to be reset.
VERSION WITH SQUARE (USB) CONNECTOR & SILVER RESET BUTTON - can be configured to work with VDO resistive oil pressure sender or Honeywell solid state oil pressure sender. Most units are auto-detecting, but if not any upgrade can be performed by a Service Centre. The silver button is enabled for 20 resets, after those have been used up, the Flydat must be returned to a Service Centre to be reset.