Tempstar Defrost Control Board for T4H560GKA200 — OEM 1173636 | Ships Today
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Overview
The Tempstar 1173636 defrost control board is the OEM brain of the T4H560GKA200 heat pump's defrost cycle. It monitors outdoor coil temperature and run time, then commands the reversing valve, compressor, and outdoor fan to clear ice from the coil during cold-weather operation. When this board fails, the unit may run constantly in defrost, never defrost at all (causing a frozen outdoor coil), short-cycle, or stop responding to the thermostat entirely. This is a direct-fit, genuine OEM replacement board with the correct terminal layout and timing logic for your equipment — no jumper rework or generic cross-reference guessing required.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1173636 |
| Type | Defrost Control Board |
| Brand | Tempstar (ICP/Heil) |
| Control Voltage | 24V |
| Application | Heat Pump Defrost |
| Fits Model | T4H560GKA200 |
Compatibility
Engineered for the Tempstar T4H560GKA200 heat pump and shared across closely related ICP/Heil/Comfortmaker platforms that use the same board. Always confirm the printed part number on your existing board reads 1173636 before installing.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage at the board with a multimeter.
- Access — Remove the outdoor unit's electrical control panel cover.
- Document — Photograph every wire and terminal position before disconnecting anything.
- Remove — Label and disconnect the low-voltage and sensor leads, release the board's standoffs/screws, and lift out the old defrost board.
- Install — Mount the new 1173636 board on the same standoffs and reconnect every lead exactly per your photos, including the coil temperature sensor.
- Test — Restore power, place the system in heating, and confirm a normal defrost cycle initiates and terminates correctly.
Signs You Need a Replacement
- Outdoor coil ices over and never clears in heat mode
- Unit gets stuck in continuous defrost or blows cold air indoors
- Reversing valve, fan, or compressor fail to switch on schedule
- Visible burn marks, corrosion, or failed relays on the existing board
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