We’re having some trouble with the CIES senders connected to a GI-275 in an M20J and wondering if anyone has ideas.
The issue is that the left sensors read zero until about 13 gallons are added and then they work fine. The installer thought it was a sensor issue but CIES sent new ones and they have the same problem.
The installer checked that they report fine through the full range of motion wired out of the tank. He then installed them and checked that the travel seems fine when they are moved with a string inside the tank. Borescope doesn’t show any obstructions around them, as far as it can see.
However, when actually filling the wing with gas, they don’t seem to read right until you hit several gallons. This means the calibration value is effectively zero for a while, which is not right.
The right tank works fine. We’re at our wits end on this and the installer said CIES doesn’t seem to know what the issue could be.
Any ideas? @fuellevel any chance you could help?