What are the specs for this Control Board?

The correct replacement for Tempstar model T2H342GKD200 — Heat Pump Defrost | 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 T2H342GKD200 — Heat Pump Defrost | 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 Defrost Control Board for T2H342GKD200 — Heat Pump Defrost | Ships Today

Name: Tempstar Defrost Control Board for T2H342GKD200 — Heat Pump Defrost | Ships Today
Brand: Tempstar
SKU: 1173636-GEN
Price: 159.00 USD
Availability: InStock

SKU: 1173636-GEN Brand: Tempstar

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Overview

This OEM defrost control board (part 1173636) is the brain of the defrost cycle on your Tempstar T2H342GKD200 heat pump. It monitors coil temperature and run time, then initiates and terminates the defrost cycle, energizes the reversing valve, and controls the outdoor fan and auxiliary heat during defrost. A failed defrost board leads to a frosted or iced-over outdoor coil, poor heating performance, short cycling, or a unit that never exits defrost. Replacing the board with the correct OEM part restores proper defrost timing and protects the compressor from liquid floodback.

Specifications

Spec	Value
OEM Part Number	1173636
Type	Defrost Control Board
Brand	Tempstar
Control Voltage	24V
Application	Heat Pump Defrost / Reversing Valve Control

Compatibility

Direct-fit OEM replacement for the Tempstar T2H342GKD200 heat pump and related ICP / Heil / Comfortmaker heat pumps using the 1173636 defrost board. Confirm the part number printed on your existing board before ordering, as defrost timing pins differ by platform.

Installation Guide

Safety First — Disconnect power and verify zero voltage with a multimeter.
Access — Remove the control-box service panel.
Document — Photograph every wire, plug, and timing-pin setting on the old board.
Remove — Unplug harnesses and unsnap or unscrew the board from its standoffs.
Install — Mount the new board, match the defrost timing-pin selection, and reconnect each harness per your photo.
Test — Restore power and force a defrost test to confirm the reversing valve and fan respond correctly.

Signs You Need a Replacement

Outdoor coil ices up and won't defrost
Unit stuck in continuous defrost
No reversing-valve switching during defrost
Erratic heat-pump operation or short cycling

Shipping & Returns

Ships same day on orders placed 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 Defrost Control Board f...

$159.00

Frequently Asked Questions

Does this Control Board fit my Tempstar T2H342GKD200 — Heat Pump Defrost | Ships Today?

Yes. This is the factory-specified OEM control board for the Tempstar T2H342GKD200 — Heat Pump Defrost | 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 T2H342GKD200 — Heat Pump Defrost | 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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