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Honeywell ST9120U1003 circuit board electric fan timer


Electronic Fan Timer with 30 fixed heat fan on, adjustable heat fan off, fixed 4 sec cool fan on and 100 sec cool fan off
Stands alone. Integrate control of all combustion blower and circulating fan operations in a gas warm air appliance when you use the Honeywell ST9120U universal fan timer board.
The unit creates a central wiring point for the electrical components of the furnace to help save you time. And while you’re saving time, you’ll also enjoy saving space on your truck, because the universal application capabilities of the ST9120U let it replace more than 25 other models. So you can meet all of your fan timer needs with just one model.
On the surface, the job of the ST9120U is very simple: monitor temperature demands and run the fan as needed. But the ST9120U also handles all the little complexities of the job, And best of all, it’s ready to work in just about every situation, replacing more than 25 other models.
The ST9120U monitors the thermostat for heat, cool and fan demands, runs the induced draft blower motor and runs the circulating fan (up to two speeds) as needed. It also monitors limit switch strings and energizes ignition control. In short, this one little unit packs a big punch, making it a smart choice for your applications as well as your business.
• Central appliance wiring point simplifies appliance assembly and service.
• Fixed or field-adjustable heat fan on delay; field adjustable heat fan off delay.
Twinning capability, with 5 amp. fuse.
Integrates control of combustion blower and circulating fan operations for a gas warm air appliance
Temperature Range, Ambient (F)
Temperature Range, Ambient (C)
Approvals, Underwriters Laboratories Inc
Approvals, Canadian Standards Association
Certified: File No. LR95329-17
ST9101A1006 ST9101A1014 ST9101A1022 ST9120A1006 ST9120A2004 ST9120B1005 ST9120C1012 ST9120C1020 ST9120C2002 ST9120C2010 ST9120C2028 ST9120C3000 ST9120C3018 ST9120C4008 ST9120C4016 ST9120C4040 ST9120C4057 ST9120C5005 ST9120C5013 ST9120D3009 ST9120G2008 ST9120G2016 ST9120G2024 ST9120G2032 ST9120G4004 ST9120G4012 ST9120G4038
Click Here for installation guide