ICP Defrost Control Board for YE048F — Heat Pump OEM | Ships Today
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Overview
This is a genuine OEM defrost control board (part number 34332101) for the ICP / Tempstar / Heil YE048F heat pump. The defrost board manages the entire outdoor unit in heating mode: it reads the defrost thermostat, times the defrost interval, energizes the reversing valve coil, and cycles the outdoor fan and auxiliary heat so the outdoor coil can clear frost. A failed board leaves the coil iced over, runs expensive strip heat continuously, or short-cycles the system. Common symptoms include a heavily frosted outdoor coil that never defrosts, no heating output, the reversing valve failing to switch, the outdoor fan running through defrost, or no 24V output to the contactor coil.
Specifications
| Spec | Value |
|---|---|
| Part Number | 34332101 |
| Type | Defrost Control Board |
| Brand | ICP / Tempstar / Heil |
| Control Voltage | 24V |
| Function | Heat Pump Defrost Cycle Management |
| Fit | OEM Replacement |
Compatibility
Designed as the factory replacement defrost board for the ICP YE048F heat pump and used across compatible ICP-family outdoor units sold under the Heil, Tempstar, and Comfortmaker labels. Match the part number and connector layout to your existing board before installing.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
- Access — Remove the control panel cover on the condensing unit.
- Document — Photograph every connector, jumper, and the defrost timing pin setting before unplugging anything.
- Remove — Unplug the wiring harnesses and remove the mounting screws or standoffs holding the old board.
- Install — Mount the new board, set the defrost timing jumper to match the original, and reconnect each harness per your photo.
- Test — Restore power, place a call for heat, and confirm normal heating and a proper defrost cycle.
Signs You Need a Replacement
- Outdoor coil ices over and never clears
- Heat pump produces no heat or only auxiliary strip heat
- Reversing valve does not switch during defrost
- System short-cycles or the contactor never energizes
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