ICP Defrost Control Board for YF048G — Heat Pump | Ships Today
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Overview
This genuine OEM defrost control board (part number 22192900) manages the defrost cycle on the ICP / Tempstar / Heil YF048G heat pump. The board monitors run time and coil temperature, then initiates and terminates the defrost cycle so frost is cleared from the outdoor coil during heating operation. It also coordinates the reversing valve, compressor, and outdoor fan during defrost. When this board fails, the heat pump may ice over heavily in winter, never run a defrost cycle (or run it constantly), fail to switch the reversing valve, or leave the outdoor unit completely unresponsive on a heat call.
Specifications
| Spec | Value |
|---|---|
| Part Number | 22192900 |
| Type | Defrost Control Board |
| Brand | ICP / Tempstar / Heil |
| Application | Heat Pump Defrost Control |
| Control Voltage | 24V |
| Fit | OEM Replacement |
Compatibility
Direct OEM fit for the ICP/Tempstar/Heil/Comfortmaker YF048G heat pump and units using the same defrost board. Confirm the board's part number and connector layout against your existing board before installing, and note any defrost-timing jumper/pin settings.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage at the board with a multimeter.
- Access — Remove the condenser control/electrical panel to expose the board.
- Document — Photograph every connector, wire, and jumper/pin setting before disconnecting.
- Remove — Unplug each harness, release the board standoffs/screws, and lift out the old board.
- Install — Mount the new board, match the defrost-timing jumper to the original, and reconnect each harness per your photo.
- Test — Restore power, run a heat call, and initiate/observe a defrost cycle to confirm proper operation.
Signs You Need a Replacement
- Outdoor coil ices over and never defrosts in heating mode
- Unit runs defrost continuously or at wrong intervals
- Reversing valve or outdoor fan won't respond during defrost
- No response on a heat call; visible burn marks or corrosion 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