York 031-01624-000 Filter Board

Maintain the signal integrity and electrical stability of your HVAC systems with the York 031-01624-000 DCB Isolator Filter Board. Designed specifically for integration within complex HVAC control circuits, this OEM York replacement part serves as a critical DC frequency filter that isolates sensitive components from electrical noise and interference. Professional technicians rely on this isolator board to ensure accurate communication between the LCD logic board and power units, particularly in preventing disturbances to flame-sensitive components and high-voltage modules within York chiller systems.

The York 031-01624-000 utilizes a precise bus voltage isolator design, featuring three internal 150K ohm resistors (+/- 1.5K ohms) to provide a safe resistance barrier between the DC link filter capacitors and the primary control logic. By managing the positive, midpoint, and negative voltage connection points, this DCB filter board prevents improper signal modulation and potential system shutdowns due to electrical transients. For contractors performing HVAC troubleshooting on YCAV or YCIV units, replacing a compromised filter board is essential for resolving motor current overloads and maintaining stable HVAC performance.

• Ensures signal integrity by filtering out unwanted electrical noise and harmful DC link interference.
• Features precise 150K ohm bleeder resistors to maintain safe voltage levels across capacitor banks.
• Provides high-level electrical isolation for sensitive LCD logic boards in industrial chiller applications.
• Direct OEM replacement ensures exact terminal spacing and mounting compatibility for rapid field installation.
• Critical for preventing erratic sensor readings and false HVAC fault codes in complex control loops.

What are the symptoms of a failing York DCB Isolator Board?
Technicians often see "Motor Current Overload" shutdowns or erratic voltage readings on the LCD logic board. If you measure resistance across pins 1 to 1, 2 to 2, or 3 to 3 on connectors J1 and J2 and find values outside the 150K ohm (+/- 1.5K) range, the resistors have likely failed.

Is this part compatible with YCAV and YCIV series chillers?
Yes, the 031-01624-000 is a standard component for the Variable Speed Drive (VSD) systems found in YCAV and YCIV models, managing the DC link voltage sensing for the power units.

Does this board protect the system during the pre-charge period?
While the SCR Trigger board handles the gate commands, the isolator filter board provides the necessary feedback for the logic board to monitor the DC link voltage as capacitors charge, preventing damage from unbalanced phases.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.