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ST9120U1011 - Universal Fan Timer (Board) - Honeywell

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This is an O.E.M. authorized part. Fits various Honeywell models .

Honeywell ST9120U1011 Universal Electronic Fan Timer Board integrates control of combustion blower and circulating fan operations for a gas warm air appliance. This Timer replaces Honeywell ST9120, ST9101, ST9141, and ST9160 models installed in gas warm air furnaces. Includes instructions and special wire harnesses for easy replacement.

Replaces 40+ existing Honeywell electronic fan timers
Instruction sheet supplies full cross reference and wiring guide
Interface harnesses for simple conversion
Integrates control of all combustion blower and circulating fan operations in gas warm-air appliance
Replaceable fuse
DIP switch selectable heat and cool delay on and off times
LED lights for easy diagnostics
Electronic air cleaner and humidifier terminal connections
Continuous low speed indoor air circulation


  • Description: Twinning capability, with 5 amp. Fuse
  • Application: Integrates control of combustion blower and circulating fan operations for a gas warm air appliance
  • Heat Fan On Delay: adj. set at 30 sec
  • Heat Fan Off Delayz: adj. set at 140 sec
  • Cool Fan On Delay: adj. 4-30 sec, (set at 4 sec)
  • Cool Fan Off Delay: fixed 30 sec
  • Temperature Range, Ambient (F): -40 F to +175 F
  • Temperature Range, Ambient (C): -40 C to +79 C
More Information
ManufacturerHoneywell Limited
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