What are the specs for this Control Board?

The correct replacement for ICP model YK030G1 — Heat Pump Timer/Defrost Control | 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 YK030G1 — Heat Pump Timer/Defrost Control | Ships Today.

ICP

ICP Defrost Control Board for YK030G1 — Heat Pump Timer/Defrost Control | Ships Today

Name: ICP Defrost Control Board for YK030G1 — Heat Pump Timer/Defrost Control | Ships Today
Brand: ICP
SKU: 34332101
Price: 155.94 USD
Availability: InStock

SKU: 34332101 Brand: ICP

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Overview

This is a genuine OEM ICP/Tempstar/Heil defrost control board (Part #34332101) for the YK030G1 heat pump condensing unit. The defrost control board is the brain of your heat pump's defrost cycle — it monitors coil temperature and run time, then commands the reversing valve, outdoor fan, and auxiliary heat to clear ice off the outdoor coil during cold-weather operation. When this 24V board fails, the system can't defrost properly, leading to a frosted-over outdoor unit, weak heating, short cycling, or a unit that won't switch between heating and cooling. Replacing the board restores correct defrost timing and protects the compressor from liquid slugging.

Specifications

Spec	Value
Part Number	34332101
Type	Defrost Control Board
Brand	ICP / Tempstar / Heil
Control Voltage	24V
Application	Heat Pump Defrost / Reversing Valve Control
Fit	OEM Direct Replacement

Compatibility

Direct-fit replacement for the ICP/Tempstar/Heil YK030G1 heat pump and related condensing units that originally shipped with board 34332101. Always verify your existing board's part number and terminal layout against the photo before ordering.

Installation Guide

Safety First — Disconnect power at the breaker and the outdoor disconnect; verify zero voltage with a multimeter before touching any terminals.
Access — Remove the control panel cover on the condensing unit to expose the board.
Document — Photograph all low-voltage and line-voltage wiring at the board before disconnecting anything.
Remove — Label and unplug each wire/connector, release the board's standoffs or mounting screws, and lift out the old board.
Install — Mount the new 34332101 board, set any defrost-timer jumpers to match the original (e.g., 30/60/90 min), and reconnect every wire per your photo.
Test — Restore power, run a heating cycle, and confirm the unit enters and exits defrost correctly.

Signs You Need a Replacement

Outdoor coil ices over and never defrosts
Heat pump won't switch between heating and cooling modes
Unit short cycles or trips on the defrost cycle
Burnt smell, scorched traces, or visible damage on the board

Shipping & Returns

Ships same day on orders placed before 3 PM CST. 30-day returns on unused parts. 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 YK...

$155.94

Frequently Asked Questions

Does this Control Board fit my ICP YK030G1 — Heat Pump Timer/Defrost Control | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP YK030G1 — Heat Pump Timer/Defrost Control | 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 YK030G1 — Heat Pump Timer/Defrost Control | 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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