Bard 8620-106 Replacement Kit

The Bard 8620-106 Defrost System Replacement Kit is a critical field-installed component designed specifically for Bard heat pump units. This kit serves as an OEM-grade solution for failing defrost control boards, ensuring the unit correctly manages ice accumulation on the outdoor coil during low-ambient heating cycles. The assembly typically includes the solid-state 8201-102 defrost board, necessary wiring harnesses, and high-pressure/low-pressure switch integration capabilities. By monitoring the coil temperature sensor and compressor run time, this module optimizes the transition between heating and defrost modes to maintain system Delta T and prevent compressor slugging. This control logic is vital for protecting the reversing valve and maintaining the longevity of the hermetic circuit. Contractors should verify existing Bard wiring schematics to ensure correct pin alignment and terminal connections during installation. This HVAC replacement part is engineered for a precise fit, eliminating the need for generic universal controls that often lack specific timed-temperature defrost logic required for these chassis.

• OEM Compatibility: Designed specifically for integrated control within Bard heat pump systems to ensure proper sequence of operation.
• Reliable Defrost Logic: Utilizes precise timed-temperature intervals (30, 60, or 90 minutes) to clear the outdoor coil efficiently.
• System Protection: Includes inputs for high and low-pressure switches to lock out the compressor during hazardous operating conditions.
• Solid-State Construction: Resistant to vibration and moisture, common failure points in outdoor HVAC control modules.

Does this kit include the outdoor coil sensor?
The 8201-102 board within the 8620-106 kit utilizes a specific thermistor for temperature sensing; verify if your existing sensor is within 10k ohm resistance specifications or if a new sensor lead is required for your specific model.

How do I adjust the defrost interval settings on this board?
The board features selectable pins for 30, 60, and 90-minute intervals. For most high-humidity environments, a 60-minute setting is the standard baseline to prevent excessive frost buildup without sacrificing system efficiency.

Can this replace the older mechanical defrost timers?
Yes, this solid-state kit is the designated replacement for many older Bard mechanical systems, though updated wiring according to the provided kit instructions is mandatory for correct feedback loops.

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.