ICP Defrost Control Board for YJ036GB1 — Heat Pump Defrost | Ships Today
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
Overview
This is the genuine OEM defrost control board for the ICP / Heil / Tempstar YJ036GB1 heat pump, OEM part number 1069364. The defrost board is the brain of the outdoor unit in heating mode — it monitors the defrost thermostat and timing intervals, then commands a defrost cycle when ice builds on the outdoor coil. During defrost it reverses the valve, shuts off the outdoor fan, and energizes auxiliary heat to keep supply air comfortable. A failed defrost board leads to a coil that ices over and never clears, reduced heating capacity, an outdoor fan that won't shut off in defrost, or a heat pump that won't run at all. This board restores correct, energy-efficient defrost operation.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1069364 |
| Type | Defrost Control Board |
| Brand | ICP (Heil / Tempstar / Comfortmaker) |
| Function | Defrost timing, reversing valve & fan control |
| Fit | OEM |
| Application | Heat pump outdoor unit |
Compatibility
Built for the ICP/Heil/Tempstar YJ036GB1 heat pump and other ICP-family outdoor units using this defrost board. Match the OEM part number and connector layout to your existing board before installing.
Installation Guide
- Safety First — Disconnect power at the disconnect and verify zero voltage with a multimeter.
- Access — Remove the service panel to reach the control board.
- Document — Photograph all wire harnesses and plug positions before disconnecting.
- Remove — Unplug each connector, release the board standoffs or screws, and lift out the old board.
- Install — Mount the new board, then reconnect each harness to its matching terminal per your photo.
- Test — Restore power, run a heating cycle, and verify normal operation and a proper defrost cycle.
Signs You Need a Replacement
- Outdoor coil ices over and never defrosts
- Outdoor fan runs during defrost or won't stop
- Heat pump won't switch into or out of defrost
- Visible burnt traces, scorching, or relay damage 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