ICP Defrost Control Board for YJ048GB1 — Heat Pump | Ships Today
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Overview
This is a genuine OEM defrost control board (ICP part number 1069364) for the ICP YJ048GB1 heat pump. The defrost board monitors outdoor coil temperature and run time, then initiates and terminates the defrost cycle so frost and ice that build on the outdoor coil during heating are cleared. It also sequences the reversing valve, condenser fan, and auxiliary heat during defrost. A failed board leaves the outdoor coil icing over, kills heating capacity, or locks the unit into a continuous or never-ending defrost.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1069364 |
| Type | Defrost Control Board |
| Brand | ICP |
| Control Voltage | 24 VAC |
| Application | Heat Pump Defrost Cycle |
Compatibility
Direct OEM replacement for the ICP / Tempstar / Heil YJ048GB1 heat pump. Match the board part number and connector layout to your existing board before installing, as defrost boards vary by series and timing pins.
Installation Guide
- Safety First — Disconnect power at the outdoor disconnect and verify zero voltage with a multimeter.
- Access — Remove the control-box panel to reach the board.
- Document — Photograph every harness plug and the defrost timing jumper/pin setting before disconnecting.
- Remove — Unplug each harness, release the board standoffs or screws, and lift the old board out.
- Install — Mount the new board, set the defrost timing pin to match the original, and reconnect every harness per your photo.
- Test — Restore power, initiate a defrost (or force one via the test pins), and confirm the valve shifts, fan stops, and the cycle terminates correctly.
Signs You Need a Replacement
- Outdoor coil ices over and heating output drops
- Unit never enters defrost — or never exits it
- No response from the board on a heat call
- Visible burn marks, corrosion, or a failed relay 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