What are the specs for this Control Board?

The correct replacement for Tempstar model T4A360GKD100 — Defrost Control | 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 T4A360GKD100 — Defrost Control | 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 T4A360GKD100 — Defrost Control | Ships Today

Name: Tempstar ComfortAlert Control Board for T4A360GKD100 — Defrost Control | Ships Today
Brand: Tempstar
SKU: 1177402-GEN
Price: 219.00 USD
Availability: InStock

SKU: 1177402-GEN Brand: Tempstar

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

Overview

This is a genuine OEM ComfortAlert control board (part number 1177402) for the Tempstar T4A360GKD100 unit. The ComfortAlert board monitors and manages compressor operation, providing onboard diagnostics that flag electrical and system faults — such as locked-rotor, open-circuit, low-voltage, short-cycling, and welded-contactor conditions — through a series of status LEDs. It coordinates the 24V control logic for the condensing unit. When the board fails, the system may not respond to cooling calls, may short-cycle, or may display erratic or no diagnostic codes, leaving the compressor and fan unable to start reliably.

Specifications

Spec	Value
Part Number	1177402
Type	ComfortAlert Diagnostic Control Board
Brand	Tempstar
Control Voltage	24V
Function	Compressor monitoring & fault diagnostics
Fits Model	T4A360GKD100

Compatibility

Engineered specifically for the Tempstar T4A360GKD100 unit and shared across related ICP / Heil / Comfortmaker models that use the 1177402 ComfortAlert board. Verify the existing board's part number and connector layout before ordering.

Installation Guide

Safety First — Disconnect power at the disconnect and breaker, verify zero voltage with a multimeter.
Access — Remove the control/electrical access panel.
Document — Photo every wire harness and terminal position before disconnecting.
Remove — Unplug the harnesses, release the standoffs/screws, and lift out the old board.
Install — Mount the new board on the standoffs and reconnect each harness exactly per your photo.
Test — Restore power, call for cooling, and confirm normal operation and a steady status LED.

Signs You Need a Replacement

No response to thermostat cooling calls despite good power
Persistent or nonsensical ComfortAlert fault LED codes
Compressor short-cycling or failing to start
Visible burnt traces, swollen relays, 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...

$219.00

Frequently Asked Questions

Does this Control Board fit my Tempstar T4A360GKD100 — Defrost Control | Ships Today?

Yes. This is the factory-specified OEM control board for the Tempstar T4A360GKD100 — Defrost Control | 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 T4A360GKD100 — Defrost Control | 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.

Menu