Monarch
Heating & Cooling

Model # TFC-1 Official Monarch furnace thermostat

Here are the diagrams and repair parts for Official Monarch TFC-1 furnace thermostat, 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 21 parts  |

Twist-on Wire Connector 0115017
#18

Control box diagram

Twist-on wire connector

Part #0115017

Replaced by #STD375005

?
Manufacturer substitution
This part replaces 0115017. Substitute parts can look different from the original.
This item is not returnable
$2.49
29% OFF Phone Price : $3.49
In Stock
Nipple Chase 0156818
#6

Control box diagram

Nipple chase

Part #0156818

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

Bracket 2026155
#11

Control box diagram

Bracket

Part #2026155

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

Screw 0144238
#20

Control box diagram

Screw

Part #0144238

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

Screw 0144051
#2

Control box diagram

Screw

Part #0144051

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

Heyco Bushing 0107332
#21

Control box diagram

Heyco bushing

Part #0107332

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

Wire Assembly 0155283
#19

Control box diagram

Wire assembly

Part #0155283

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

Screw 0144261
#13

Control box diagram

Screw

Part #0144261

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

Shield 2127116
#8

Control box diagram

Shield

Part #2127116

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

Thermostat 0156817
#4

Control box diagram

Thermostat

Part #0156817

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