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Carrier 325878-751 Circuit Board/Plug Kit
An OEM control board plug kit used in Carrier HVAC equipment as a replacement control kit for compatible fixed-speed furnace applications when the specified board/kit is required.
Key Features:
- Official OEM Circuit Board/Plug Kit for Carrier HVAC equipment (as stated on the product listing)
- Carrier naming identifies it as a control kit for fixed-speed furnaces
- Listed as a replacement for these Carrier control board part numbers: HK42FZ016, HK42FZ008, HK42FZ011, HK42FZ007, HK42FZ009, HK42FZ004
Compatibility & Applications:
- Listed for Carrier HVAC equipment (specific unit models/series are not provided in the supplied sources)
- Carrier guidance indicates replacement parts are typically obtained through Carrier dealers
- Must only be used where the manufacturer specifies this exact part number: 325878-751
Installation & Operation Notes:
- Installation should be performed by a qualified HVAC technician
- Refer to the specific unit's service/installation manual and wiring diagram for correct board/plug connections, setup, and checkout
- User feedback indicates it is often described as "plug-in/play" once the correct kit is matched, but correct application still depends on confirming the part number and following instructions for the specific furnace
Maintenance & Troubleshooting:
- This kit is commonly replaced when a furnace will not operate correctly and diagnostics point to a failed control board/connection kit
- User feedback commonly ties replacement to restoring normal operation after other common parts did not solve the issue, emphasizing following the included directions
User Reviews & Q&A Summary:
- Reviews commonly describe it as easy to install and effective at fixing the problem once installed
- Common themes include getting a system running quickly and noting it's an OEM Carrier part
- Q&A themes include confirmation that it is an actual Carrier-branded part, and notes that it may differ from the original board while still working when matched correctly
- Robust Push Terminals
- Common-Sense LEDs
- Clean, Professional Installation
- Smaller Footprint
- Variable-Speed Fan Control
- Includes HZ311 TrueZONE panel, AT140 40VA transformer, C7735A discharge air sensor
Product Specifications
- Stages: Single Stage
- Operating Voltage: Input 24 Vac, 60 Hz
- Line Voltage: 115-230 Vac, 60 Hz
- Inducer Motor/Blower Motor: PSC
- Ambient Operating Temperature: -40 to 175°F (-40 to 80°FC)
- Humidity Range: 5% to 95% relative humidity (non-condensing)
Product Specifications:
- Description: 1/2 in. NPT x 1/2 in. NPT Intermittent Hot Surface Pilot Ignition SmartValve Control with fast-fast opening and 3.4 in. wc pressure regulator setting
- Flame Sense: Electrode
- Type of Gas: Natural
- Ignition System Type: Intermittent Hot Surface Pilot Ignition
- Ignition Sequence: Intermittent Pilot
- Ignition Source: Pilot
- Ignition Trials To Lockout: Continuous Retry
- PrePurge: None
- Body Pattern: Straight-through
- Opening Characteristics: Fast-Fast Opening
- Ignition Trial Time (sec): 90 sec
- Electrical Ratings: 24 Vac
- Frequency: 60 Hz; 50 Hz
- Flame Failure Response Time (sec): 1.6 sec @ 3 µA
- Ambient Temperature Range (F): -40 F to +175 F
- Ambient Temperature Range (C): -40 C to +79 C
- Pressure Regulator Setting (psi): 3.4 in. wc
- Pressure Regulator Setting (kPa): 0.87 kPa
- Pressure Ratings (psi): 1/2 psi
- Pressure Ratings (kPa): 3.45 kPa
- Inlet/Outlet Size (in.): 1/2 in. NPT x 1/2 in. NPT
- Maximum Capacity (ft³/hr): 200 ft³/hr
- Maximum Capacity (m³/hr): 5.7 m³/hr
- Minimum Capacity (ft³/hr): 20 ft³/hr
- Minimum Capacity (m³/hr): 0.6 m³/hr
- Maximum Capacity at 1 in. P.D. (ft³/hr): 150 ft³/hr
- Maximum Capacity at 1 in. P.D. (m³/hr): 4.2 m³/hr
- Pilot Gas Outlet: Yes
- Typical Ignition Hardware: Q3450
- Approvals, American Gas Association IAS: IAS Design Certified: C2030017
Maintenance & Troubleshooting:
- This capacitor is typically replaced when diagnostics indicate a run capacitor is out of specification or when motor operation issues are traced to the dual run capacitor (diagnostic procedures are not provided in the supplied sources).
- If issues persist after replacement, confirm the installed capacitor matches the required MFD and voltage ratings and that all connections are correct per the equipment documentation.
Certifications & Compliance:
- Manufacturer listing states UL & cUL for these capacitors.
User Reviews & Q&A Summary:
- Review themes commonly describe it as a correct replacement capacitor that restores cooling operation when a failed capacitor is replaced.
- Many comments focus on getting the right part quickly and returning equipment to service, with frequent notes about straightforward replacement once the correct rating is confirmed.
Product Highlights
85/135V
Specs
| Voltage: | 85/135V |
|---|
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