What are the specs for this Control Board?

The correct replacement for ICP model YJ030G — 24V 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 YJ030G — 24V Heat Pump Timer | Ships Today.

ICP

ICP Defrost Control Board for YJ030G — 24V Heat Pump Timer | Ships Today

Name: ICP Defrost Control Board for YJ030G — 24V Heat Pump Timer | Ships Today
Brand: ICP
SKU: 34332101
Price: 184.60 USD
Availability: InStock

SKU: 34332101 Brand: ICP

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Overview

This OEM ICP Defrost Control Board (part number 34332101) is the brain of the defrost cycle on your ICP/Tempstar/Heil YJ030G heat pump. It monitors outdoor coil temperature and run time, then initiates and terminates the defrost cycle so frost and ice are cleared from the outdoor coil during heating operation. The board operates on a 24V control circuit and coordinates the reversing valve, outdoor fan, and compressor timing. When this board fails, the heat pump can ice over, lose heating capacity, run the auxiliary heat strips constantly, or refuse to switch out of defrost. Replacing a failed defrost control board restores proper 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
Fitment	OEM Replacement

Compatibility

Engineered as a direct OEM replacement for the ICP/Tempstar/Heil YJ030G heat pump and equivalent units in the same family that originally shipped with part 34332101. Always confirm the part number printed on your existing board before ordering.

Installation Guide

Safety First — Disconnect power at the breaker and the outdoor disconnect, then verify zero voltage with a multimeter.
Access — Remove the control access panel on the outdoor unit.
Document — Photograph every wire and terminal position on the existing board before disconnecting anything.
Remove — Label and disconnect the low-voltage and line-voltage leads, then unscrew or unclip the old board from its standoffs.
Install — Mount the new board, reconnect each wire to the matching terminal per your photo, and confirm the defrost timing pins/jumpers match the original.
Test — Restore power and verify the unit enters heating, initiates a defrost cycle, and terminates normally.

Signs You Need a Replacement

Outdoor coil ices over and never clears during heating
Heat pump locks into a continuous defrost cycle or never defrosts at all
Auxiliary/emergency heat runs constantly, driving up energy bills
Visible scorching, burnt traces, or no response from the board on a call for heat

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 YJ...

$184.60

Frequently Asked Questions

Does this Control Board fit my ICP YJ030G — 24V Heat Pump Timer | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP YJ030G — 24V 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 YJ030G — 24V 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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