What are the specs for this Transformer?

The correct replacement for ICP model WJH342000K000A2 — 40VA 208/230V to 24V | 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 WJH342000K000A2 — 40VA 208/230V to 24V | Ships Today.

ICP

ICP Transformer for WJH342000K000A2 — 40VA 208/230V to 24V | Ships Today

Name: ICP Transformer for WJH342000K000A2 — 40VA 208/230V to 24V | Ships Today
Brand: ICP
SKU: 1176032
Price: 45.44 USD
Availability: InStock

SKU: 1176032 Brand: ICP

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Overview

This OEM control transformer assembly steps 208/230V line voltage down to 24V control voltage for the ICP/Tempstar/Heil WJH342000K000A2 heat pump. Rated at 40VA, it powers the contactor coil, reversing valve solenoid, defrost board, and thermostat circuit. The kit includes the 40VA transformer (1173691), the 24V reversing valve coil (1172619), the reversing valve with coil (1173708), and the 24V barrier (1176032). A failed transformer kills the entire low-voltage control circuit — the thermostat goes unresponsive, the contactor won't pull in, and neither the compressor nor fan will run. Buzzing, overheating, or a visibly burned transformer signals it's time to replace it.

Specifications

Spec	Value
Part Numbers	1173691, 1172619, 1173708, 1176032
Type	Step-Down Control Transformer Kit
Brand	ICP / Tempstar / Heil
Rating	40VA
Primary Voltage	208/230V
Secondary Voltage	24V

Compatibility

Engineered as a direct OEM fit for the ICP/Tempstar/Heil model WJH342000K000A2 heat pump. The 40VA rating and 208/230V-to-24V configuration match the factory control circuit for reliable operation.

Installation Guide

Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter before touching any wiring.
Access — Remove the control panel service cover to expose the transformer and low-voltage terminals.
Document — Photograph all primary and secondary wire connections before disconnecting anything.
Remove — Disconnect the line-voltage primary leads and 24V secondary leads, then unbolt the failed transformer from its mounting plate.
Install — Mount the new transformer, reconnect primary and secondary leads exactly per your photo, and confirm tight terminals.
Test — Restore power and verify 24V across the secondary and proper control-circuit operation.

Signs You Need a Replacement

No 24V at the secondary terminals (dead control circuit)
Thermostat unresponsive and contactor will not pull in
Audible buzzing or humming from the transformer
Burned, swollen, or melted transformer housing

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 Transformer for WJH342000K00...

$45.44

Frequently Asked Questions

Does this Transformer fit my ICP WJH342000K000A2 — 40VA 208/230V to 24V | Ships Today?

Yes. This is the factory-specified OEM transformer for the ICP WJH342000K000A2 — 40VA 208/230V to 24V | 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 transformer on my ICP WJH342000K000A2 — 40VA 208/230V to 24V | Ships Today?

Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Photo wiring connections. Step 3: Disconnect wires from old transformer. Step 4: Remove mounting hardware. Step 5: Install new transformer, reconnect wires matching voltage ratings. Step 6: Verify 24V output with multimeter.

My thermostat has no power. What failed?

Thermostat with no display = failed 24V transformer (or blown control board fuse). Check the 3A/5A fuse on the control board first ($1–$5 fix). If fuse is good but no 24V output from transformer, replace transformer.

Is this transformer 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 transformer?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

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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