What are the specs for this Control Board?

The correct replacement for Tempstar model T2A330GKD200 — Diagnostic Module | Ships Today is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Tempstar equipment which lists the model number T2A330GKD200 — Diagnostic Module | Ships Today.

Is this control board compatible with Bryant or Payne systems too?

Many Tempstar parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

Tempstar

Tempstar ComfortAlert Control Board for T2A330GKD200 — Diagnostic Module | Ships Today

Name: Tempstar ComfortAlert Control Board for T2A330GKD200 — Diagnostic Module | Ships Today
Brand: Tempstar
SKU: 1177402-GEN
Price: 165.00 USD
Availability: InStock

SKU: 1177402-GEN Brand: Tempstar

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Overview

This OEM ComfortAlert control board (part number 1177402) is the compressor diagnostic and protection module for your Tempstar T2A330GKD200 condensing unit. The ComfortAlert board continuously monitors compressor and electrical operation, detecting faults such as locked rotor, low or high voltage, open circuits, and welded contactor conditions. It communicates problems through a flash-code LED, helping technicians diagnose system issues quickly and protecting the compressor from damaging conditions. When this board fails, the outdoor unit may not start, may short-cycle, may lock out on a fault that isn't actually present, or may stop providing diagnostic feedback entirely. Because the compressor is the most expensive component in the system, a properly functioning diagnostic board is critical to protecting it.

Specifications

Spec	Value
Part Number	1177402
Type	ComfortAlert Diagnostic Control Board
Brand	Tempstar (ICP / Heil)
Control Voltage	24V
Function	Compressor monitoring & fault diagnostics
Indicators	LED flash-code fault reporting

Compatibility

Directly fits the Tempstar T2A330GKD200 condensing unit. ComfortAlert diagnostic modules are used across many Tempstar, ICP, Heil, and Comfortmaker single-stage condensers and heat pumps. Always confirm the original part number (1177402) before ordering, as diagnostic board revisions can vary by platform.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and main breaker, then verify zero voltage with a multimeter.
Access — Remove the condenser service panel to reach the control board.
Document — Photograph every low-voltage and sensor wire connection before disconnecting.
Remove — Disconnect the wiring harnesses and release the board from its standoffs or mounting clips.
Install — Seat the new board on its mounts and reconnect each harness to the matching terminal per your photo.
Test — Restore power, call for cooling, and confirm normal operation with no fault flash codes on the diagnostic LED.

Signs You Need a Replacement

Outdoor unit won't start or short-cycles with no clear mechanical cause.
Diagnostic LED is dark or shows erratic, unresolvable flash codes.
Nuisance lockouts on faults that aren't actually present.
Visible scorching, swollen components, or corrosion on the board.

Shipping & Returns

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

Shipping Information

Orders placed before 3PM CST ship same business day
Standard delivery: 2-5 business days
Express shipping available at checkout
Free shipping on orders over $75
Tracking number emailed upon shipment

Return Policy

30-day returns on unused parts in original packaging
Electrical parts (capacitors, contactors, control boards) are final sale once installed
Email info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

Tempstar ComfortAlert Control Bo...

$165.00

Frequently Asked Questions

Does this Control Board fit my Tempstar T2A330GKD200 — Diagnostic Module | Ships Today?

Yes. This is the factory-specified OEM control board for the Tempstar T2A330GKD200 — Diagnostic Module | Ships Today. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the control board on my Tempstar T2A330GKD200 — Diagnostic Module | Ships Today?

Difficulty: Advanced (1–2 hrs)
Step 1: Turn off breaker. Step 2: PHOTOGRAPH all wire connections before touching anything. Step 3: Label each wire with tape. Step 4: Disconnect all wires, remove old board. Step 5: Mount new board, reconnect all wires matching your photo exactly. Step 6: Restore power and test all modes. Exact part number match is critical.

My HVAC system is completely dead. What could be wrong?

Completely dead HVAC (no LED on board) = failed control board or blown fuse. Check board fuse first (3A or 5A, costs $1–$5). If fuse is good and board has power but no LED, board is dead. Always photograph wiring before replacing.

Is this control board compatible with Bryant or Payne too?

Many Tempstar parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my Tempstar control board?

OEM essential. Control boards are model-specific with precise firmware and connector layouts. Aftermarket boards rarely match all functions and can cause intermittent failures or safety issues. Always match the exact OEM part number.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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