1F90 Comfort-Set 

How do I find the Model (type) number of my 1F90 Comfort-Set II Series?

Remove the front cover from the wall plate.

TYPE or MODEL Number is located on inside of front cover.

Links to additional information for 1F90 Series thermostats: 

• Replacement Homeowner's Manual/Installation Instructions
• Frequently Asked Questions (FAQs) - 1F90 Series thermostat Operation
• 1F92/1F94 Heat Pump Terminal Cross Reference
• 1F90/1F97 Isolation Transformer Installation Instructions
• Remote Sensor Troubleshooting Guide - F145-1049 and F145-1170

 

Quick programming guides for 1F90 digital programmable thermostats:

• 1F90/1F91/1F92, 5 + 2 Day thermostat models
• 1F94/1F97 7-Day thermostat models
• 1F95 7-Day thermostat model