ICP Defrost Control Board for YG030GC2 — Heat Pump | Ships Today
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Overview
This OEM defrost control board (part number 34332101) governs the defrost cycle on your ICP / Tempstar / Heil YG030GC2 heat pump. During heating, frost accumulates on the outdoor coil; the defrost board watches coil temperature and accumulated run time, then triggers a reversing-valve switch and stops the outdoor fan to clear the ice before resuming normal heat. It also enforces compressor anti-short-cycle timing. A failed board shows up as an outdoor coil iced over solid, a unit that never enters or never exits defrost, loss of heat-pump heating, or the system defaulting to constant emergency/auxiliary heat.
Specifications
| Spec | Value |
|---|---|
| Part Number | 34332101 |
| Type | Defrost Control Board |
| Brand | ICP / Tempstar / Heil |
| Control Voltage | 24V |
| Function | Defrost timing, reversing valve & fan control, compressor protection |
| Application | Heat Pump (outdoor unit) |
Compatibility
Direct OEM replacement for the defrost control board in the ICP Tempstar Heil YG030GC2 heat pump. This board is used across a range of ICP-family outdoor heat pump units. Verify the connector layout and part number against 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 outdoor unit's electrical service panel.
- Document — Photograph every wire and connector on the existing board before removing anything.
- Remove — Unplug the harness connectors and unscrew or unclip the old board from its standoffs.
- Install — Mount the new board and reconnect each connector and wire exactly per your photo.
- Test — Restore power, run a heating call, and confirm proper defrost initiation and termination.
Signs You Need a Replacement
- Outdoor coil freezes over and never clears
- System stuck in defrost or never enters defrost
- No heat-pump heating; constant auxiliary/emergency heat
- Erratic compressor or outdoor-fan behavior in heating mode
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