ST9141A1002 | Honeywell Electronic Fan Timer
Honeywell · Industrial Automation & Electrical
Description The ST9141A1002 is an electronic fan timer that integrates the control of combustion blower and circulating fan operations in gas warm air furnaces. It functions as the central wiring hub for thermostat, motor, and safety switch coordination, enabling optimized HVAC system sequencing and safe burner control. Technical Specifications Condition New/Never Used Surplus Brand Honeywell Category Controls & Indicators Part Number ST9141A1002 Subcategory Electronic Fan Timer Power Supply 18–30 VAC, 60 Hz Control Type Thermostat-based, heat/cool/fan sequencing Combustion Blower Load 1.5A FL / 10A LR @115 VAC; 0.75A FL / 5A LR @230 VAC Circulating Fan Load 15A FL / 30A LR @115 VAC; 7.5A FL / 15A LR @230 VAC Thermostat Load 0.06A plus ignition system current Heat Delay On Fixed 30 sec Heat Delay Off Adjustable: 60, 100, 140, 180 sec Cool Delay On/Off 6 sec on / 60 sec off (both fixed) Postpurge Time 5 seconds Timing Accuracy ±5% or ±2 seconds (whichever is greater) Operating Temperature Range -40°F to +175°F (-40°C to +79°C) Humidity Tolerance 5% to 95%, non-condensing Mounting Type Appliance compartment (4 screw holes) Ignition System Compatibility Works with Honeywell SV9500 HSI system LED Indicator Yes (system status feedback) Accessory Terminals Electronic air cleaner and humidifier Product Status Active Weight 0.70 lbs Information About ST9141A1002 The ST9141A1002 is a Honeywell electronic fan timer designed for gas-fired warm air appliances, offering intelligent control over combustion and fan operations. This model manages both the induced draft blower motor and a two-speed circulating fan, monitoring thermostat calls for heat, cooling, and fan-only modes. Integrated with terminals for air cleaner and humidifier connections, it also monitors safety devices like burner and limit switches. The control includes adjustable off-delay for heating speeds and fixed delays for cooling modes, and is compatible with the SV9500 Hot Surface Ignition System for safe burner operation. Key Features: Integrated Fan and Combustion Control: Coordinates burner, draft blower, and dual-speed fan operation from a single board. Thermostat Demand Monitoring: Supports heat, cool, and fan signals to manage system operation. Field-Adjustable Delays: Heat-off delay adjustable to 60, 100, 140, or 180 seconds for system tuning. Fixed Cool Delays: Ensures consistent cooling operation with fixed 6 sec on and 60 sec off delays. Status LED Indicator: Visual status indication for diagnostic and operational feedback. Post-Purge Functionality: 5-second postpurge enhances system safety and combustion clearance. Electronic Accessory Terminals: Includes dedicated outputs for air cleaner and humidifier. Robust Environmental Ratings: Operates reliably from -40°F to +175°F (-40°C to +79°C) in humid environments. Direct Wiring Interface: Designed as the electrical control center for most furnace components. Mounting Friendly: Installs via four corner screws in the appliance wiring compartment. The ST9141A1002 delivers precise, integrated fan and combustion control for gas furnaces requiring advanced sequencing, safety, and accessory support.
Brand: Honeywell · Category: Industrial Automation & Electrical
Key features
- Integrated Fan and Combustion Control: Coordinates burner, draft blower, and dual-speed fan operation from a single board.
- Thermostat Demand Monitoring: Supports heat, cool, and fan signals to manage system operation.
- Field-Adjustable Delays: Heat-off delay adjustable to 60, 100, 140, or 180 seconds for system tuning.
- Fixed Cool Delays: Ensures consistent cooling operation with fixed 6 sec on and 60 sec off delays.
- Status LED Indicator: Visual status indication for diagnostic and operational feedback.
- Post-Purge Functionality: 5-second postpurge enhances system safety and combustion clearance.
- Electronic Accessory Terminals: Includes dedicated outputs for air cleaner and humidifier.
- Robust Environmental Ratings: Operates reliably from -40°F to +175°F (-40°C to +79°C) in humid environments.
- Direct Wiring Interface: Designed as the electrical control center for most furnace components.
- Mounting Friendly: Installs via four corner screws in the appliance wiring compartment.
Specifications
| Manufacturer part number | ST9141A1002 |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Honeywell |
| Category | Controls & Indicators |
| Part Number | ST9141A1002 |
| Subcategory | Electronic Fan Timer |
| Power Supply | 18–30 VAC, 60 Hz |
| Control Type | Thermostat-based, heat/cool/fan sequencing |
| Combustion Blower Load | 1.5A FL / 10A LR @115 VAC; 0.75A FL / 5A LR @230 VAC |
| Circulating Fan Load | 15A FL / 30A LR @115 VAC; 7.5A FL / 15A LR @230 VAC |
| Thermostat Load | 0.06A plus ignition system current |
| Heat Delay On | Fixed 30 sec |
| Heat Delay Off | Adjustable: 60, 100, 140, 180 sec |
| Cool Delay On/Off | 6 sec on / 60 sec off (both fixed) |
| Postpurge Time | 5 seconds |
| Timing Accuracy | ±5% or ±2 seconds (whichever is greater) |
| Operating Temperature Range | -40°F to +175°F (-40°C to +79°C) |
| Humidity Tolerance | 5% to 95%, non-condensing |
| Mounting Type | Appliance compartment (4 screw holes) |
| Ignition System Compatibility | Works with Honeywell SV9500 HSI system |
| LED Indicator | Yes (system status feedback) |
| Accessory Terminals | Electronic air cleaner and humidifier |
| Product Status | Active |
| Weight | 0.70 lbs |
| Product type | Electronic Fan Timer |
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