914 ULS TCU Problem
in 912 / 914 Technical Questions
6 years ago
Hi Rotax Gurus,
I need some advice about my TCU on a 2018, 914 ULS please:
About a week ago I was flying my plane as normal. Kitfox 7 SS 914ULS, 60 hours on the engine. Needed to climb steeply through a gap in the clouds, so added some extra power. Had a TCU red warning light come on (probably from an over boost situation I suspected). Reduced power, landed at the destination and red light stayed on. Flying back, switched on the master and now both the red and orange lights are permanently on.
Flew home on minimum power. Plugged in my computer and read the log. There was a 0.8 sec overboost recorded and thats it. all sensors working and logging as normal. Waste gate is adjusted right and operates normally. Cycling when master on, humming with engine off, opening when throttle pushed in.
Did an engine start and all is working again as predicted at all revs. All sensors normal and reading fine. Did a take off. Boost came up to 40 Inches of Hg and stayed there at 5500 RPM. Engine is cool and all readings in the green. Turbo spinning and sounding beautiful, lots of power. Air box temp and pressure within limits all the time. RPM not more than 5500 and throttle position sensor working as calibrated.
Landed, took all the Rotax sensors off, blew out the contacts with compressed air and WD40. Plugged them back in and still both lights are on all the time. They dont blink or cycle or flicker. They are just on all the time. But everything is working perfect.
What am I missing ??
Thanks in advance
Amer
I need some advice about my TCU on a 2018, 914 ULS please:
About a week ago I was flying my plane as normal. Kitfox 7 SS 914ULS, 60 hours on the engine. Needed to climb steeply through a gap in the clouds, so added some extra power. Had a TCU red warning light come on (probably from an over boost situation I suspected). Reduced power, landed at the destination and red light stayed on. Flying back, switched on the master and now both the red and orange lights are permanently on.
Flew home on minimum power. Plugged in my computer and read the log. There was a 0.8 sec overboost recorded and thats it. all sensors working and logging as normal. Waste gate is adjusted right and operates normally. Cycling when master on, humming with engine off, opening when throttle pushed in.
Did an engine start and all is working again as predicted at all revs. All sensors normal and reading fine. Did a take off. Boost came up to 40 Inches of Hg and stayed there at 5500 RPM. Engine is cool and all readings in the green. Turbo spinning and sounding beautiful, lots of power. Air box temp and pressure within limits all the time. RPM not more than 5500 and throttle position sensor working as calibrated.
Landed, took all the Rotax sensors off, blew out the contacts with compressed air and WD40. Plugged them back in and still both lights are on all the time. They dont blink or cycle or flicker. They are just on all the time. But everything is working perfect.
What am I missing ??
Thanks in advance
Amer
