ERR7 Definition: The display board main IC didn't receive the incline variable resistor (VR) value, or the value exceeds the set range. Explanation: The incline VR voltage changes as the incline motor operates, and the display board CPU uses the VR voltage to calculate the incline position. Without this value, the CPU cannot instruct the incline motor what to do, so ERR? appears. Or when the incline set is out of alignment, the VR value exceeds the set range.
The following is a list of possible solutions:
1. Incline Set a) Inspect whether the Incline ERR LED on the drive board lights. This LED indicates that the incline set has exceeded the range. b) Inspect whether the incline set mechanically exceeds range. On DC incline motors, at the 0% position, the line on the thin incline pipe will not align with the end of the thick pipe. On AC motors, at the 0% position, the red line will not appear even with the bottom of the incline window in the incline set. See Incline Troubleshooting Manual for details. c) Inspect whether the incline VR voltage exceeds the range: Put multimeter probes on the incline VR set blue and green wire connectors, while keeping the wires connected. Refer to Incline Troubleshooting Manual for the voltage range for your treadmill. If the incline range is exceeded, either mechanically or electronically, calibrate the incline set. Refer to the Incline Calibration in the Incline Troubleshooting Manual for directions. If the incline set cannot be calibrated electronically, replace the incline VA. If the incline set is stuck and cannot be unstuck, replace the whole incline set. 2. Drive Board Inspect incline voltage on the blue and green wires at the drive board. If voltage is within range, and ERRl appears, inspect drive board component connections and components for wear. 3. Ribbon Cable Inspect ribbon cable for breaks. Inspect connections at the display and drive boards. 4. Display Board Inspect IC connections. Push down to secure connections. Re-insert les.
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