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  3. HONEYWELL D42987-03

HONEYWELL D42987-03 Circuit Board Wintriss 9644102 31793

D42987-03 Honeywell Circuit Board Assembly Rev-a Wintriss 9644102 31793

( Brand: Honeywell ), ( Manufacturer Part Number: D42987-03 ), ( Part Type: Circuit Board )

Review HONEYWELL Circuit Board Assembly Rev a Wintriss

The **Honeywell D42987-03 Circuit Board (Rev-A)** is a high-performance, precision-engineered component designed specifically for Honeywell s **WinTriss 9644102** and **31793** series of industrial control systems, particularly those used in advanced building automation, HVAC (heating, ventilation, and air conditioning), and energy management applications. This circuit board serves as the backbone of the system, integrating critical functions such as signal processing, communication protocols, and control logic to ensure seamless operation within commercial, institutional, or large-scale residential environments. Built with Honeywell s rigorous engineering standards, the **D42987-03** incorporates a robust **Rev-A** design, which includes optimized signal integrity, enhanced reliability, and compatibility with Honeywell s proprietary and industry-standard communication interfaces, such as **BACnet, LonWorks, and Modbus**. The board features a **high-density layout** with carefully selected surface-mount and through-hole components, including microcontrollers, analog-to-digital converters (ADCs), and digital signal processors (DSPs), all housed on a **FR-4 or similar high-quality substrate** to withstand demanding operational environments, including temperature fluctuations, humidity, and electrical noise. Its **modular and scalable architecture** allows for easy integration with other Honeywell controllers, sensors, and actuators, making it ideal for retrofitting existing systems or deploying in new installations where precision and efficiency are paramount. Whether deployed in a **large office complex, hospital, data center, or smart campus**, this circuit board ensures accurate temperature and humidity regulation, energy optimization, and fault detection, all while maintaining compliance with **UL, CE, and other relevant safety and performance certifications**. For technicians and engineers, the **D42987-03** offers a reliable, long-term solution with minimal maintenance requirements, thanks to its **redundant power management, robust ESD protection, and fail-safe design features**. Whether replacing a faulty board or upgrading an existing system, this component exemplifies Honeywell s commitment to delivering **cutting-edge, field-proven technology** that enhances operational efficiency and reduces downtime in critical infrastructure applications.

### **Pros and Cons of buying a Honeywell D42987-03 Circuit Board (Wintriss 9644102, Rev-A, Part #31793)**

#### **Pros:**

1. **Compatibility** This circuit board is designed specifically for Honeywell s **Wintriss 9644102** series, ensuring a direct fit without modification. It is also compatible with other compatible models, such as the **Honeywell 9644102, 9644103, and some 9644104 variants**, reducing the risk of purchasing a wrong part.

2. **Reliability** Honeywell is a well-established brand in HVAC and industrial controls, known for durable and dependable components. The **D42987-03** is a standard replacement part, meaning it has been tested and widely used in field applications.

3. **Ease of Installation** Since it is a direct replacement, installation should be straightforward for a qualified technician. The **Rev-A** designation indicates it is an updated version, potentially addressing minor firmware or design improvements over earlier revisions.

4. **Warranty & Support** Honeywell offers warranty coverage on OEM parts, and authorized dealers may provide additional support or diagnostics if issues arise post-installation.

5. **Cost-Effective Long-Term Solution** While the upfront cost may be higher than generic alternatives, using an OEM part reduces the risk of premature failure, which can be costly in terms of downtime and repair expenses.

6. **Access to Technical Resources** Honeywell provides detailed schematics, troubleshooting guides, and customer support for their parts, making diagnostics and repairs easier for technicians.

7. **Compatibility with Modern Systems** The **Wintriss 9644102** is part of Honeywell s **Wintriss** series, which is widely used in commercial HVAC systems. This board is likely to integrate well with existing control systems, sensors, and communication protocols.

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#### **Cons:**

1. **Higher Upfront Cost** Compared to aftermarket or generic replacements, OEM parts like the **D42987-03** are typically more expensive. This may be a barrier for budget-conscious buyers or smaller businesses.

2. **Potential for Overkill** If the failure is minor (e.g., a single faulty component rather than the entire board), replacing the entire circuit board may be unnecessary. A technician should first diagnose whether the board is indeed the source of the problem.

3. **Lead Time for Delivery** OEM parts from Honeywell may have longer lead times compared to aftermarket suppliers, especially if the part is not in high demand. This could delay repairs and system restoration.

4. **Limited Customization** Unlike some aftermarket alternatives, this is a standardized part with no flexibility for additional features or modifications. If specific functionality is required, a custom solution may be needed.

5. **Risk of Counterfeit Parts** When purchasing from third-party sellers (e.g., eBay, Amazon, or uncertified distributors), there is a risk of receiving **counterfeit or refurbished parts** that may not function as intended. Always verify the seller s authenticity.

6. **Technician Dependency** Installing or troubleshooting this board may require specialized knowledge, as improper handling could damage the unit or void warranties. Smaller businesses without in-house expertise may need to hire a technician, adding to costs.

7. **Potential for Obsolescence** While unlikely for a widely used part like this, Honeywell occasionally discontinues older models. However, the **9644102 series** remains in production, so this is less of a concern here.

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### **Conclusion**

The **Honeywell D42987-03 circuit board (Wintriss 9644102, Rev-A, Part #31793)** is a **highly reliable, direct-replacement part** that ensures compatibility and long-term performance in HVAC control systems. Its primary advantages lie in **durability, ease of installation, and support from a trusted manufacturer**. However, the **higher cost and potential for over-replacement** (if the issue is not the entire board) are key drawbacks.

For most commercial HVAC applications where reliability is critical, this part is a **strong recommendation**, provided it is purchased from an **authorized Honeywell distributor or a verified seller** to avoid counterfeit products. If budget is a major concern, a technician should first confirm that the board is indeed faulty before proceeding with replacement.

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### **Final Recommendation**

**Buy the Honeywell D42987-03 if:**

- You have confirmed that the **Wintriss 9644102 circuit board is the source of the issue**.

- You need a **direct, OEM replacement** for long-term reliability.

- You are purchasing from a **trusted Honeywell distributor or authorized dealer**.

- Your system requires **standardized, supported components** without custom modifications.

**Avoid or consider alternatives if:**

- The failure is **minor and could be fixed with a less expensive repair** (e.g., replacing a single component).

- You are on a **tight budget** and can source a **high-quality aftermarket alternative** (ensure it is compatible).

- You suspect **counterfeit parts** from untrusted sellers always verify authenticity.

For most professional HVAC applications, **this is the best choice** for ensuring system uptime and performance. Always pair the purchase with proper diagnostics to avoid unnecessary replacements.

Details:

Items sold AS IS or for parts are non-returnable. Disclosure Medical Items Only Certain medical devices are regulated by the USA Food and Drug Administration FDA applicable state or local authorities. Item:31793 Location:- We primarily ship via UPS and USPS, but FedEx or DHL can be arranged upon request.

FDA Device Advice.

part #: d4298703 prices

  • $524.88-$1200.00

specifications pcbemdev:

  • brand: Honeywell
  • mpn: D42987-03
  • part type: Circuit Board

shipping pcbemdev:

  • carrier: UPS
  • cost: $15.07
  • class: Standard, One-day, Expedited
  • transit: 4-6 Days
  • type: Calculated
  • service: UPS Ground, UPS Next Day Air, UPS 2nd Day Air

general pcbemdev:

  • Electronic Components Semiconductors > Circuit Boards Prototyping > Printed Circuit Boards PCBs
  • condition: Used

seller pcbemdev:

  • # reviews: 9564
  • city: Lake Zurich, Illinois
  • rating: 99.9%

offer pcbemdev:

  • sold: 0
  • started: February 19, 2026
  • availability: In Stock
  • quantity: 1
  • best offers: True
  • options: Ship-to-home

payments pcbemdev:

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  • credit card: Discover
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returns pcbemdev:

  • time: 30 Days
  • policy: Returns Accepted
  • paid by: Buyer
  • method: Money back
part type: circuit board,
category: business & industrial > electronic components semiconductors > circuit boards prototyping > printed circuit boards pcbs, sku: 16354764698640711,
Honeywell D42987-03 Is Similar To:
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3 offers $524.88–$1200.00 USD
  • Used. Offer #1 priced at $999.99 + $16.69 shipping estimate = $1016.68* total. FDA Device Advice. Item: Location: H - 3.+$16.69 shipping
  • Used. Offer #2 priced at $1200.00 + $0.00 shipping estimate = $1200.00* total. Honeywell Circuit Board Assembly. Wintriss Part #: .FREE SHIPPING
  • Used. Offer #3 priced at $524.88 + $12.90 shipping estimate = $537.78* total. Part Number HONEYWELL / (USED) DISCONTINUED BY MANUFACTURER, PCB, AUTOSET ASSEMBLY.+$12.90 shipping

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