ICP Defrost Control Board for YJ036GA2 — Heat Pump Module | Ships Today
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Overview
This genuine OEM defrost control board (part number 1069364) is the brain of the ICP/Tempstar/Heil YJ036GA2 heat pump's defrost cycle. In heating mode, frost builds on the outdoor coil; the defrost board monitors the defrost thermostat and an internal timer, then temporarily reverses the unit to cooling and shuts off the outdoor fan to melt that frost. It also coordinates the reversing valve coil, the contactor, and auxiliary/strip heat staging. When this board fails, the heat pump can ice over solid in winter, run weak or no heat, fail to switch modes, or short-cycle. Typical symptoms include a coil packed in ice, the outdoor fan behaving incorrectly during defrost, no 24V output to the reversing valve, or the unit not entering defrost at all.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1069364 |
| Type | Defrost Control Board |
| Brand | ICP / Tempstar / Heil |
| Control Voltage | 24V |
| Application | Heat Pump Defrost Control |
| Fit | OEM Replacement |
Compatibility
Engineered for the ICP YJ036GA2 heat pump and used across ICP-family condensers — Tempstar, Heil, Comfortmaker — that specify defrost board 1069364. Match the board's part number and connector layout to your existing unit before installing.
Installation Guide
- Safety First — Disconnect power at the breaker and outdoor disconnect, verify zero voltage with a multimeter.
- Access — Remove the condenser electrical access panel.
- Document — Photograph every wire and connector plug on the board before removing anything.
- Remove — Unplug the harnesses, release the standoff clips or screws, and lift out the old board.
- Install — Seat the new board on the standoffs and reconnect each harness to the matching terminal per your photo.
- Test — Restore power, run a heating cycle, and confirm the unit initiates a proper defrost (reversing valve shifts, outdoor fan stops, then resumes).
Signs You Need a Replacement
- Outdoor coil ices over and never defrosts in heating mode
- Heat pump won't switch between heat and cool
- Outdoor fan runs or stops at the wrong time during defrost
- No 24V signal to the reversing valve or short-cycling
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