Name: Resideo ST9103A1002/U Replacement Electronic Fan Timer
Brand: Resideo
SKU: HONE-ST9103A1002/U
Price: 168.37 USD
Availability: InStock

Resideo Replacement Electronic Fan Timer

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Frequency	50 Hz; 60 Hz
Ambient Temperature	-40 F to +150 F
Application	A single circuit board providing combustion air blower control, two speed circulating air blower control, oil primary control, limit circuit inputs, thermostat wiring terminations, & a central appliance wiring point for an oil fixed furnace.
UL	Listed: Report MP466
CSA	Certified: File No. LR95329-17
Replaces	ST9103A1002
Heat Fan On Delay	fixed, 45 sec
Heat Fan Off Delay	adj. 60, 90, 120, 150 sec (set at 150 sec)
Cool Fan On Delay	fixed 0 sec
Cool Fan Off Delay	fixed 0 sec

The ST9103A1002 is a replacement electronic fan timer from Resideo (Honeywell Home).

The fan timer decides when the blower starts after the burner lights and how long it runs after the burner stops. Start too early and the first air out of the registers is cold; stop too early and the heat exchanger keeps its heat instead of the house getting it.

On a furnace that dumps cold air at the start of every cycle, or one where the blower keeps running long after the call, this board is what is doing it.

Brand: Resideo (Honeywell Home)
Manufacturer Part #: ST9103A1002/U
Type: Electronic fan timer
UPC: 085267087377
Category: Fan & Limit Controllers

Full Specifications

Application	A single circuit board providing combustion air blower control, two speed circulating air blower control, oil primary control, limit circuit inputs, thermostat wiring terminations, & a central appliance wiring point for an oil fixed furnace.
Approvals and Standards	UL Listed: Report MP466, CSA Certified: File No. LR95329-19
Heat Fan Off Delay Timing	Adjustable 60, 120, 150, 180 sec (set at 120 sec)
Heat Fan On Delay Timing	Adjustable 30, 60 sec (set at 30 sec)
Cool Fan Off Delay Timing	Adjustable 30, 60 sec (set at 30 sec)
Cool Fan On Delay Timing	Adjustable 4, 30 sec (set at 4 sec)
Current Draw	4 VA at 24 V AC
Electrical Ratings	18 to 30 Vac
Power Supply Frequency	50 Hz, 60 Hz
Operating Voltage	18 to 30 Vac
Compatible With	Gas warm air appliance, Oil furnace
Ambient Operating Temperature (Max)	150 °F, 66 °C
Ambient Operating Temperature (Min)	-40 °F, -40 °C