Nautilus
Kitchen Appliance

Model # N155 Official Nautilus ceiling heater

Here are the diagrams and repair parts for Official Nautilus N155 ceiling heater, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 14 parts  |

Bushing 99400035
#6

Replacement parts diagram

Bushing

Part #99400035

Replaced by #S99400035

?
Manufacturer substitution
This part replaces 99400035. Substitute parts can look different from the original.
This item is not returnable
In Stock
Thrm Lnk Asy 97008906
#9

Replacement parts diagram

Thrm lnk asy

Part #97008906

Replaced by #S97008906

?
Manufacturer substitution
This part replaces 97008906. Substitute parts can look different from the original.
In Stock
Grille 98007045
#12

Replacement parts diagram

Grille

Part #98007045

The manufacturer no longer makes this part, and there's no substitute part

Screw 99150527
#2

Replacement parts diagram

Screw

Part #99150527

The manufacturer no longer makes this part, and there's no substitute part

Motor 99080278
#10

Replacement parts diagram

Motor

Part #99080278

The manufacturer no longer makes this part, and there's no substitute part

Element 97008672
#8

Replacement parts diagram

Element

Part #97008672

The manufacturer no longer makes this part, and there's no substitute part

Screw 99150471
#3

Replacement parts diagram

Screw

Part #99150471

The manufacturer no longer makes this part, and there's no substitute part

Mnting Strap 98006960
#1

Replacement parts diagram

Mnting strap

Part #98006960

The manufacturer no longer makes this part, and there's no substitute part

Motor Nut 99260428
#4

Replacement parts diagram

Motor nut

Part #99260428

The manufacturer no longer makes this part, and there's no substitute part

Wire 97009460
#7

Replacement parts diagram

Wire

Part #97009460

The manufacturer no longer makes this part, and there's no substitute part

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor...

Main causes: damaged walking belt, improper belt tension, bad roller bearing...

Main causes: rear roller out of alignment, damaged walking belt, bad roller...

Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor...

Main causes: faulty sensors, wiring failure, bad control console...

Main causes: bad control console, wiring failure, bad motor control board...

Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor co...

Repair guides for treadmills

These step-by-step repair guides will help you safely fix what’s broken on your treadmill.

How to replace a treadmill motor controller

How to replace a treadmill motor controller

Your treadmill motor won't run with a defective motor controller. Replace the motor controller if it doesn't operate the...

Repair difficulty
Time required
15 minutes or less
How to replace a treadmill drive motor

How to replace a treadmill drive motor

A defective drive motor won't run when activated by the motor controller. Replace the treadmill drive motor if it doesn'...

Repair difficulty
Time required
15 minutes or less
How to replace a treadmill walking board

How to replace a treadmill walking board

A worn-out walking board creates friction with the walking belt and causes the belt to slow down during use. Replace the...

Repair difficulty
Time required
30 minutes or less

Effective articles & videos to help repair your fitness & exercise

Use the advice and tips in these articles and videos to get the most out of your treadmill.

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect....