White-Rodgers Programmable 4H/2C Wireless Comfort Control System
White-Rodgers Programmable 4H/2C Wireless Comfort Control System
Item # 1F98EZ-1621

This easy-to-install universal 4H/2C wireless thermostat system features a 6 square inch display. The Comfort Interface and the Equipment Control are paired at the factory, saving time at installation. The 1F98EZ can control dual fuel systems with a wireless temperature sensor or by Dual Fuel Logic program in the Comfort Interface. Programmability offers 7 day, 4 or 2 program periods per day.  Up to 4 wireless sensors (3 indoor and 1 outdoor) can be added.

Features and Benefits
  • Up to 4H/2C conventional and heat pump systems, millivolt compatible
  • 7 day or 5/1/1 day programmable
  • Large 12 in2 lighted display with easy-to-read characters
  • Large touch keys for easy operation
  • Exclusive battery power monitor
  • Permanent program retention
  • Patented pre-programmed software simplifies programming
  • Simple setup menu to activate optional features
  • Temporary temperature override
  • Easy access battery compartment
  • Selectable Energy Management Recovery
  • Filter and humidifier pad change reminders
  • Programmable fan
  • Humidification and dehumidification control
  • Exclusive “Call for Service” diagnostic indicator
  • Meets California Building Code, Title 24
  • Hardwired or battery powered
  • 5-year warranty
Product Specifications
Up to 4H/2C conventional, heat pump and 3-wire zone systems, millivolt compatible
6.00” x 4.50” x 1.25” (WDH)
Display Size
5.5 in2
Input Voltage
Operating Temperature
14° to 120° F
Operating Humidity
0% to 90% non-condensing
Storage Temperature
-40° to 150° F
Temperature Sensors
3 indoor wireless (F145RF-1600), 1 outdoor wireless (F145RF-1600)
Short Cycle Protection
Fast, medium or slow
Communications Protocol
Communications Range
Up to 100'
Control Range
45° to 99° F


5418 Elmwood Ave | Indianapolis IN 46203 | 888-652-9663