What are the specs for this Control Board?

The correct replacement for ICP model YC030G — Heat Pump Timer | Ships Today is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your ICP equipment which lists the model number YC030G — Heat Pump Timer | Ships Today.

ICP

ICP Defrost Control Board for YC030G — Heat Pump Timer | Ships Today

Name: ICP Defrost Control Board for YC030G — Heat Pump Timer | Ships Today
Brand: ICP
SKU: 34332100
Price: 180.64 USD
Availability: InStock

SKU: 34332100 Brand: ICP

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Overview

This genuine OEM defrost control board (OEM part number 34332100) is the brain of the heat-pump cycle on your ICP/Tempstar/Heil YC030G outdoor unit. In heating mode it monitors the defrost thermostat and an internal timer, then commands the reversing valve and outdoor fan to clear frost and ice from the outdoor coil so the system keeps delivering heat. The board also coordinates the compressor contactor and 24V control signals. When a defrost board fails, the unit may ice over solid in winter, run continuously in defrost, fail to switch between heating and cooling, or stop responding to the thermostat entirely. Because the board ties together timing, the reversing valve, and the fan circuit, a faulty board can mimic many other failures — replacing it restores correct, automatic defrost operation.

Specifications

Spec	Value
Part Number	34332100
Type	Defrost Control Board
Brand	ICP (Tempstar / Heil)
Control Voltage	24 VAC
Function	Defrost timing, reversing valve & fan control
Fit	OEM Replacement

Compatibility

Engineered as a direct OEM fit for the ICP / Tempstar / Heil YC030G heat pump condensing unit and other ICP family heat pumps that use board 34332100. Confirm your existing board carries the same part number and connector layout before ordering.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter.
Access — Remove the condenser electrical access panel.
Document — Photograph every wire and connector on the board before removing anything.
Remove — Unplug the harness connectors, release the mounting standoffs or screws, and lift out the old board.
Install — Seat the new board on the standoffs and reconnect each harness exactly as photographed.
Test — Restore power, run a heating cycle, and confirm proper defrost initiation and termination.

Signs You Need a Replacement

Outdoor coil ices up heavily in heating mode and never defrosts.
Unit gets stuck in defrost or short-cycles between modes.
Reversing valve or outdoor fan does not energize on schedule.
No response to the thermostat with 24V present at 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

ICP Defrost Control Board for YC...

$180.64

Frequently Asked Questions

Does this Control Board fit my ICP YC030G — Heat Pump Timer | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP YC030G — Heat Pump Timer | Ships Today. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the control board on my ICP YC030G — Heat Pump Timer | Ships Today?

Difficulty: Advanced (1–2 hrs)
Step 1: Turn off breaker. Step 2: PHOTOGRAPH all wire connections before touching anything. Step 3: Label each wire with tape. Step 4: Disconnect all wires, remove old board. Step 5: Mount new board, reconnect all wires matching your photo exactly. Step 6: Restore power and test all modes. Exact part number match is critical.

My HVAC system is completely dead. What could be wrong?

Completely dead HVAC (no LED on board) = failed control board or blown fuse. Check board fuse first (3A or 5A, costs $1–$5). If fuse is good and board has power but no LED, board is dead. Always photograph wiring before replacing.

Is this control board compatible with Bryant or Payne too?

Many ICP parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my ICP control board?

OEM essential. Control boards are model-specific with precise firmware and connector layouts. Aftermarket boards rarely match all functions and can cause intermittent failures or safety issues. Always match the exact OEM part number.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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