Tempstar Control Board for TXA630GKA100 — ComfortAlert Diagnostic Module | Ships Today

Overview

This is a genuine OEM ComfortAlert control board (OEM #1177402) for the Tempstar TXA630GKA100 condensing unit. The ComfortAlert diagnostic module continuously monitors compressor and control-circuit operation, detecting faults such as low/high voltage, locked rotor, open circuit, and short cycling, then flashes a fault code to speed troubleshooting. When this board fails the system may not start, may short cycle, may run continuously, or may throw erratic diagnostic codes. Replacing it with the correct OEM board restores reliable 24V control and accurate fault reporting.

Specifications

Compatibility

Engineered for the Tempstar TXA630GKA100 air conditioning condensing unit and shared across ICP, Heil, Comfortmaker, and other ICP-family units that originally used part 1177402. Always confirm the OEM number on your existing board before ordering.

Installation Guide

1. Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the control-access service panel on the condensing unit.
3. Document — Photograph every wire and connector on the board before disconnecting anything.
4. Remove — Label and disconnect the low-voltage and line connections, then unclip or unscrew the failed board from its standoffs.
5. Install — Mount the new board to the same standoffs and reconnect each wire to match your photo.
6. Test — Restore power, call for cooling, and confirm normal startup and a clear diagnostic LED.

Signs You Need a Replacement

• System won't start or randomly short cycles
• Erratic, continuous, or missing diagnostic flash codes
• Burn marks, corrosion, or scorching on the board
• Compressor or fan not responding to thermostat calls

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.