Error 42 - Lift Position Value Out Of Range - Precor TRM 885.v2 Service Manual

Experience series

Table of Contents

The lift capacitor is mounted inside the lift motor. If the lift capacitor is shorted, the lift fuse will

blow. The capacitor may be checked by disconnecting the lift motor connector from the Motor

Controller and using an ohmmeter to measure between pins 5 & 6 of the lift motor connector. If

the lift capacitor is leaky, it may work for lighter people and not for others, while if it is open it will

not work at all. If the capacitor is open or leaky it cannot be determined with an ohmmeter so

the following test will determine if the capacitor is bad.

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4. With the incline below 15% (to allow room for lift travel), connect an AC voltmeter between

terminals 5 (black) & 6 (red) of the INCLINE connector. See Figures 4 and 5 for reference.

Set the treadmill in the manual program and press the INCLINE  key. The AC voltmeter

should read between 1.5 to 2.0 times the AC line voltage. If this reading is significantly low,

replace the lift motor. Note that the AC line voltage reading will only be present before an

error condition is displayed.

o If the capacitor is bad the lift motor must be replaced.

5. The lift switch could fail in an operated (shorted) condition. If this happens the lift will move

(either up or down) as soon as the unit is powered up. The typical result is that the lift will be

physically jammed as described above, and it will also probably cause the internal lift fuse to

blow. If the lift moves un-commanded as soon as the power is turned on to the machine and

eventually jams, the Motor Controller must be replaced. The lift switch may also fail in an

open condition. If this happens the lift will not operate in one direction. Perform the following

steps to determine if the switch is open.

6. With the incline below 15% (to allow room for lift travel up), connect an AC voltmeter

between terminals 1 (white) & 6 (red) of the INCLINE connector. (See Figures 4 and 5 for

connector location and pin numbering). Set the treadmill in the manual program and press

the INCLINE  key. The AC voltmeter should read AC line voltage (either 120VAC or

240VAC). Note that the AC line voltage reading will only be present before an error condition

is displayed. A correct reading here verifies that the UP switch is working properly.

7. With the incline above 0% (to allow room for lift travel down), connect an AC voltmeter

between terminals 1 (white) & 5 (black) of the INCLINE connector. Set the treadmill in the

manual program and press the INCLINE  key. The AC voltmeter should read AC line

voltage (either 120VAC or 240VAC). Note that the AC line voltage reading will only be

present before an error condition is displayed. A correct reading here verifies that the DOWN

switch is working properly.

o If either of these conditions fail, the Motor Controller must be replaced.

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If a lift motor winding is bad, the lift will not operate in one or both directions depending

on the exact fault in the motor. Replace the lift motor if the previous tests all pass.