24A34-2 White-Rodgers Electric Furnace Fan Heat Sequencer


The White-Rodgers 24A34-2 electric furnace sequencer is used on many different electric furnaces to control and sequence the ON/OFF operation of the electric heaters. Sequencers are also used to turn the fan blower ON and OFF.

SKU: WhiteRodgers24A34-2Sequencer Categories: ,


  • The 24A34-2 White-Rodgers Electric Furnace Fan Heat Sequencer is a brand new genuine White-Rodgers electric furnace sequencer.
  • There are several different types of sequencers. In the trade we refer to them as, “1 stack,” 2 stack,” “3 stack.” I would refer to the 24A34-2 as a “2 stack” sequencer.
  • The following was written directly from the installation instruction book: The 24A34-2 White-Rodgers Electric Furnace Fan Heat Sequencer we sell are, “direct replacement units for sequencing both fan and heat. It can be used in a broad range of gas and electric heating equipment and many other applications where time delay is required. The sequencers we sell have a solid-state 24 volt heater, used to energize the control, and a variety of normally open contact sets. These contacts close and open within specified timings and are used to control the furnace fan and heating elements on demand from a room thermostat. These sequencers meet a wide variety of timing requirements and assures long life at high electrical loads as well as minimum radio and TV interference”.
  • Each sequencer is stamped with timing specifications. For example, H1-20 C40-110 means the ON time for heating is 1 to 20 seconds and the OFF time for cooling is 40 to 110 seconds. The first contacts in the sequencer turn ON first and turn OFF last.

Additional information

Weight 2.5 lbs
Dimensions 5 × 5 × 5 in