Lift System Troubleshooting
Note:The lift motor is disabled when the EFX
1
is not being used. The speed sensor
must detect motion in order for lift operation to be enabled. In the following pro-
cedures, when lift motor movement is being tested the stairarms must be in motion.
Before performing this procedure, ensure that the speed sensor is operating nor-
mally, see Speed Sensor Troubleshooting.
1. If the lift motor will not move skip to step 7. If the lift motor moves and an error occurs
continue with step
2. Access the diagnostics program and proceed to the lift calibration section of the dia-
gnostics program. If the lift calibration number is 0 or 255 skip to next step. Operate
the lift, if the lift calibration number does not increment as the lift moves, skip to next
step. If the calibration number increments as the lift moves, re-calibrate the lift. If re-
calibration does not correct the problem, continue to the next .
3. Set the on/off switch in the “off” position. Remove the lift position cable connector
from the lower PCA
2
. Using an ohmmeter, measure between terminal 1 (brown wire)
and terminal 3 (blue wire). The measurement should be approximately 1KW.
4. Using an ohmmeter, measure between terminals 1 and 2 of the lift position connector
and measure between 2 and 3 of the lift position connector. The two measurements
should total approximately 1K Ω. If any of the readings are open or significantly high,
check the lift motor cable and connectors. Repair any wires or connections that are
bad. If the cable and connectors are good, replace the lift motor.
5. If you have performed all of the above tests and an error still occurs when the lift
motor operates, there are four parts that could cause the problem. There are not any
good tests to check these parts other than substituting a known good part. They are
the lower PCA, the upper data cable, the lower data cable and the upper PCA.
Replace only one part at a time. If the new part does not correct the problem, replace
the original part.
6. If you have performed all of the above tests and the lift system is still not functioning,
call Precor Technical Support.
7. Set the on/off switch in the “off” position. Remove the F1 lift fuse (2 amp slow blow)
fuse from the lower PCA. Measure the fuse with an ohmmeter. The measurement
should be 1 Ω or less. If the fuse is good, re-insert the fuse and skip to step 9. If the
fuse is open or significantly high, replace the fuse. Before operating the lift motor it is
necessary to perform a continuity test on the lift motor.
1
Elliptical Fitness Crosstrainer
2
Printed circuit assembly, generally referred to as either an upper PCA or lower PCA.
Contact Precor Customer Support at support@precor.com or 800.786.8404 with
any questions.
Page 231
7 Troubleshooting
System Troubleshooting Procedures
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