Error 18: Membrane Fault – Stuck Thumb Control
Cause:
Membrane is showing a thumb control key constantly activated for >45 seconds, regardless of mode.
Service:
If this was a momentary glitch or user error, cycling power will remedy the situation. If a key is permanently
stuck, the error will reoccur and the membrane will have to be replaced.
• Check the membrane and thumb controls for signs of fatigue, cracking, or possible moisture intrusion.
• Ensure the membrane connector is fully seated.
• Inspect the membrane cable for cuts, pinches, and all leads are fully inserted in their connectors.
• Replace the membrane and/or the thumb control switches.
Key list
Left and Right controls
DescriptionKey
Incline Down or Resistance Down1
Incline Up or Resistance Up2
Speed Down or Resistance Down3
Speed Up or Resistance Up4
Thumb controls membrane
Page 83 of 199
Cybex 525T Treadmill Part Number
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