Products Description
| Product Name | Trane BRD04876 Triac Output Start Control Board |
| Model | BRD04876 |
| Applicable Industries | Construction and Commercial |
| Application | Refrigeration compressor |
| Packaging | Cardboard Box |
| MOQ | 1 Piece |
Core Product Functions:
1. Staged Sequential Startup Control (Core Function)
Receives start/stop commands from the main controller and sequentially activates the cooling water pump, condenser fan, and compressor according to a preset timing sequence. This prevents the power grid surge caused by simultaneous startup of multiple loads, facilitates soft starting for the compressor, and reduces inrush current impact.
2. Dual-Channel Independent High-Power Load Driving
Two output channels independently control the compressor main circuit and the cooling fan, featuring built-in overcurrent protection. In the event of a load short circuit, the thyristor automatically cuts off the output and transmits a fault code to the main controller, preventing damage to contactors and the compressor.
3. Bidirectional Bus Feedback and Rapid Fault Diagnosis
Beyond receiving start/stop commands, the module monitors the on/off status of output circuits in real-time. The main control panel can directly read module faults and load open/short circuit alerts, significantly reducing troubleshooting and maintenance time.
4. Wide-Temperature, Moisture-Resistant Industrial-Grade PCB
The circuit board is fully coated with moisture-resistant conformal coating, enabling it to withstand condensation and refrigerant oil mist in server room environments; it ensures reliable long-term operation by preventing leakage, short circuits, and cold solder joints.
Tags: BRD04876 chiller starter board commercial air conditioning startup control board compressor starting module cooling system electronic component hvac control module HVAC maintenance electronic spare part industrial chiller replacement circuit board refrigeration drive board refrigeration unit control accessory Trane Spare Parts Trane start module
Technical parameter
Company Profile
Factory Profile
| Q1:For refrigeration industry, which brands are your products covering? | A1:We produce filter element replacements for brands like,Bitzer, Carrier, Yk, McQuay, Trane, etc… |
| Q2:Does the price include freight? | A2:The quotation is usually the factory price. We can recommend the most economical logistics plan and calculate the freight according to your destination and quantity. |
| Q3:How to ensure product quality? | A3:We have a strict quality control process, and we will carry out multiple inspections before the products leave the factory to ensure that they meet the standards. |
| Q4:Why choose us? | A4:Product reliability: We are a professional manufacturer . can offer high-quality products at the most competitive prices. Technical support: We provide technical assistance. Industry experience: We have over 10 years of experience in the refrigeration equipment service field. After-sales service: We offer professional after-sales service. Team collaboration: We have a professional team that can provide you with prompt services and delivery schedules. |
Common product faults:
1. Unit fails to initiate startup sequence; main controller reports loss of communication with the output board
Bus communication chip burnout or connector oxidation/open circuit prevents the main controller from issuing start/stop commands, rendering both compressors and fans unable to start.
2. Compressor fails to start, but cooling fans operate normally
The Triac corresponding to the compressor circuit has suffered a breakdown or open-circuit failure, causing a single-channel output failure, while the fan circuit remains intact.
3. “Load short-circuit” fault reported immediately upon startup; unit enters lockout protection mode
Internal breakdown/short-circuit of the SCR triggers overcurrent protection the moment power is applied, preventing the unit from starting.
4. Disordered start/stop sequencing for fans and compressors; simultaneous power-up causes frequent circuit breaker tripping
Internal timing logic chip failure prevents staggered time-delay startup; excessive instantaneous inrush current causes the breaker to trip.
5. Internal module short-circuit damages the main controller’s 24V communication power supply circuit
PCB moisture or oil mist corrosion causes a short circuit, subsequently damaging the CH530 main controller’s power channel and significantly increasing repair costs.
