NordicTrack C2155 NTL07707.1

Questions and Answers

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Zachary McmahonJul 26, 2025
What to do if NordicTrack C2155 NTL07707.1 power does not turn on?
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  Erin SimonJul 26, 2025
  First, ensure the power cord is correctly plugged into a surge suppressor, which in turn should be plugged into a grounded outlet. Remember, the treadmill isn't compatible with GFCI outlets. Also, check that the key is properly inserted into the console. Finally, examine the reset/off circuit breaker located on the treadmill frame near the power cord. If the switch protrudes, the circuit breaker has tripped; wait five minutes, then press the switch back in to reset it.
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Patricia RodriguezJul 31, 2025
What to do if NordicTrack C2155 NTL07707.1 Treadmill incline does not change correctly?
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  Michael GallegosJul 31, 2025
  If the incline of your NordicTrack Treadmill isn't changing correctly, try this recalibration method: insert the key into the console and press one of the Incline buttons. While the incline is adjusting, remove the key. After a few seconds, re-insert the key. The treadmill should automatically rise to the maximum incline and then return to the minimum, recalibrating the incline system.
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Vanessa HallAug 4, 2025
Why does my NordicTrack Treadmill power turn off during use?
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  Joseph GloverAug 5, 2025
  If your treadmill turns off during use, start by checking the reset/off circuit breaker and reset it if tripped by waiting for five minutes and then pressing the switch back in. Next, ensure the power cord is securely plugged in; if it is, unplug it, wait five minutes, and plug it back in. Also, remove and reinsert the key from the console. If the issue persists, see the front cover of this manual.
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sean79Aug 10, 2025
How to fix NordicTrack C2155 NTL07707.1 walking belt slowing down?
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  brian35Aug 10, 2025
  To address a walking belt that slows down when walked on, first make sure you are using a single-outlet surge suppressor that meets the necessary specifications. Also, check if the walking belt is overtightened. To correct this, remove the key and unplug the power cord. Use the hex key to turn both rear roller bolts counterclockwise 1/4 of a turn. The belt should be tight enough to lift each edge 2 to 3 inches (5 to 7 cm) off the platform. Keep the belt centered, then plug in the power cord, insert the key, and run the treadmill for a few minutes. Repeat until properly tightened. If the issue remains, see the front cover of this manual.
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Amber YoungAug 14, 2025
How to turn off demo mode on NordicTrack C2155 NTL07707.1 Treadmill?
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  Brittany WalshAug 14, 2025
  The console features a display demo mode, designed to be used if the treadmill is displayed in a store. If the displays remain lit when you remove the key, the demo mode is turned on. To turn off the demo mode, hold down the Stop button for a few seconds. If the displays are still lit, see THE INFORMATION MODE on page 19 to turn off the demo mode.
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Corey StoneAug 20, 2025
How to center a NordicTrack C2155 NTL07707.1 walking belt?
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  Tracy DavilaAug 20, 2025
  To fix an off-center or slipping walking belt on your NordicTrack Treadmill, first remove the key and unplug the power cord. If the belt is to the left, turn the left rear roller bolt clockwise 1/2 turn. If it's to the right, turn the bolt counterclockwise 1/2 turn. Avoid overtightening. Plug in the power cord, insert the key, and run the treadmill briefly. Repeat until centered. If the belt slips, tighten it by turning both rear roller bolts clockwise 1/4 turn. Aim for being able to lift each edge of the belt 2-3 inches (5-7 cm) off the platform. Keep the belt centered, plug in the power cord, insert the key, and carefully walk on the treadmill for a few minutes. Repeat until the belt is properly tightened.

Summary

NordicTrack C2155: Product Information and Support

Model Number, Serial Number, and Support Contact

Details on model/serial numbers, customer care contact, and website for assistance.

Initial Safety Warning

Important caution notice to read all precautions before using the equipment.

Treadmill Warning Decal Placement

Decal Location and Replacement

Explains placement of warning decals and how to obtain replacements if missing.

Key Treadmill Safety Warnings

Lists critical safety warnings for operating the treadmill, including user conduct and precautions.

Important Treadmill Safety Precautions

General Safety and Usage Rules

Essential safety rules for treadmill operation, user responsibility, and environmental considerations.

Electrical Safety and Surge Protector Requirements

Instructions on proper power cord connection, surge suppressor requirements, and risks of improper use.

Treadmill Safety and Usage Guidelines

Usage, Maintenance, and Cleaning Rules

Guidelines on unattended operation, lifting, folding, inserting objects, and regular inspection.

In-Home Use Restrictions

Specifies that the treadmill is for in-home use only and not for commercial settings.

Getting Started: Before Using Your Treadmill

Treadmill Introduction and Manual Reading

Overview of the treadmill's features, benefits, and the importance of reading the manual.

Identifying Treadmill Components

Identifies key parts of the treadmill through a labeled diagram.

Treadmill Assembly Instructions

Assembly Requirements and Tools

Instructions on assembly, including the need for two people and necessary tools.

Assembly Hardware Guide

Visual guide to identify all hardware components used during assembly.

Assembling the Treadmill Frame

Base Pad and Wheel Installation

Step-by-step guide for attaching base pads and wheels to the treadmill base.

Upright Wire Routing and Attachment

Instructions on routing the upright wire and securing the right upright to the base.

Securing Treadmill Uprights to Base

Right Upright Securing Procedure

Steps for attaching the right upright to the base using bolts and washers.

Left Upright Securing Procedure

Steps for attaching the left upright to the base using bolts and washers.

Console and Handrail Assembly

Handrail to Console Attachment

Instructions for attaching handrails to the console assembly and connecting wires.

Upright Wire to Console Connection

Guide for connecting the upright wire to the console wire for proper function.

Storage Latch and Frame Attachment

Storage Latch Installation

Steps to install and secure the storage latch for folding the treadmill.

Frame to Base Attachment

Instructions for attaching the main frame to the treadmill base using bolts and nuts.

Final Treadmill Assembly Steps

Accessory Tray Installation

Instructions for attaching the left and right accessory trays to the console base.

Final Tightening and Floor Protection

Final tightening of parts, removing plastic, and placing a mat for floor protection.

Treadmill Operation and Adjustments

Walking Belt Lubrication and Care

Important information about not applying silicone spray or other substances to the walking belt.

Power Cord Connection and Grounding

Detailed instructions on connecting the power cord, surge suppressor, and grounding requirements.

Console Diagram and Features Overview

Console Button and Display Layout

Diagram illustrating the layout and functions of the treadmill console buttons and displays.

Console Features and iFIT System Guide

Overview of console features like manual mode, preset workouts, iFIT system, and iPod compatibility.

Powering On and Manual Mode Operation

Treadmill Power On Procedure

Steps to turn on the treadmill power, including key insertion and circuit breaker reset.

Using the Treadmill Manual Mode

Guide on how to use the treadmill in manual mode, start/stop the belt, and adjust speed.

Manual Mode Adjustments and Progress Monitoring

Adjusting Treadmill Incline

Instructions for changing the treadmill's incline level using the console buttons.

Monitoring Workout Progress via Display

How to view workout data like speed, pace, calories, time, distance, and heart rate.

Manual Mode Advanced Features

Heart Rate Monitoring with Handgrips

How to use the handgrip pulse sensor for heart rate monitoring.

Fan Operation and Workout Completion

Instructions for using the fan and properly finishing a workout session.

Using Preset Workouts

Selecting and Starting Preset Workouts

Steps to choose and start a weight loss, performance, or aerobic preset workout.

Monitoring Preset Workout Progress

How to monitor progress during a preset workout and override settings.

Using iFIT Cards for Workouts

iFIT Card Insertion and Selection

Guide on inserting an iFIT card and selecting a workout program.

iFIT Workout Execution and Tracking

How to start, follow, and monitor progress during an iFIT guided workout.

Audio System and Information Mode

Integrated Audio System Usage

Instructions for connecting iPods or other audio devices and using the console speakers.

Information Mode Navigation

How to view total usage, change units, and manage demo mode settings.

Folding and Moving the Treadmill

Folding Treadmill for Storage

Step-by-step instructions on how to safely fold the treadmill for storage.

Safe Treadmill Moving Procedures

Guidelines for safely moving the folded treadmill, emphasizing proper lifting and wheel use.

Unfolding the Treadmill

Treadmill Unfolding Procedure

Instructions on how to safely unfold the treadmill from its storage position.

Treadmill Troubleshooting Guide

Troubleshooting: No Power

Solutions for when the treadmill power is not functioning, including checks for connections and circuit breakers.

Troubleshooting: Console Display Problems

Troubleshooting steps for when the console displays remain lit or do not function properly.

Treadmill Performance Troubleshooting

Troubleshooting: Incline System Recalibration

Procedure to recalibrate the incline system if it is not changing correctly.

Troubleshooting: Walking Belt Speed Loss

Solutions for when the walking belt slows down during use, including surge protector and tightening checks.

Walking Belt Alignment and Tension Adjustment

Adjusting Walking Belt Centering

How to adjust the walking belt if it is off-center or slipping.

Adjusting Walking Belt Tension

Procedure for properly tightening the walking belt to ensure optimal performance.

Treadmill Exercise Guidelines

Exercise Intensity and Heart Rate Zones

Guidance on setting exercise intensity based on heart rate for fat burning and aerobic goals.

Workout Structure and Frequency

Recommendations for warming up, training zones, cooling down, and exercise frequency.

Treadmill Part List

Identifying Treadmill Parts

Comprehensive list of all parts for the NordicTrack C2155 treadmill with key numbers.

Treadmill Part List Continuation

Additional Part Details and Notes

Lists remaining parts and notes regarding unillustrated parts and specifications.

Exploded Drawing A: Base Components

Base and Frame Exploded View

Detailed exploded diagram showing the assembly of base and frame components.

Exploded Drawing B: Motor and Console

Motor and Console Base Exploded View

Exploded diagram illustrating the motor, console base, and related parts.

Exploded Drawing C: Uprights and Frame

Uprights and Frame Exploded View

Exploded diagram showing the uprights, frame, and base mounting hardware.

Exploded Drawing D: Console and Handrails

Console and Handrail Exploded View

Exploded diagram detailing the console, handrails, and accessory tray assembly.

Parts Ordering and Warranty Information

How to Order Replacement Parts

Information on how to order replacement parts, including required details.

Product Limited Warranty Details

Details of the product warranty, coverage, limitations, and manufacturer contact.