What are the specs for this Transformer?

The correct replacement for ICP model WJA330000K000A1 — 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 WJA330000K000A1 — 40VA 208/230V to 24V | Ships Today.

ICP

ICP Transformer for WJA330000K000A1 — 40VA 208/230V to 24V | Ships Today

Name: ICP Transformer for WJA330000K000A1 — 40VA 208/230V to 24V | Ships Today
Brand: ICP
SKU: 1176032
Price: 41.60 USD
Availability: InStock

SKU: 1176032 Brand: ICP

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Overview

This OEM control transformer steps 208/230V line voltage down to the 24V required by the low-voltage control circuit on your ICP / Heil / Tempstar WJA330000K000A1 system. Rated at 40VA, it powers the thermostat, contactor coil, control board, and safety switches with stable 24V. A failed transformer — caused by a shorted secondary, age, or a power surge — knocks out the entire low-voltage system: blank thermostat, no call for heating or cooling, and a contactor that never energizes. This kit includes the matching 24V barrier (P/N 1176032) that isolates the secondary terminals. Installing the correct OEM transformer restores dependable 24V control power and protects the components that depend on it.

Specifications

Spec	Value
Part Number	1173691 (transformer), 1176032 (24V barrier)
Type	Step-Down Control Transformer
Brand	ICP / Heil / Tempstar
Rating	40 VA
Primary Voltage	208/230V
Secondary Voltage	24V
Fit	OEM Replacement

Compatibility

Engineered for the ICP / Heil / Tempstar / Comfortmaker WJA330000K000A1 model and related units that use a 40VA 208/230V-to-24V control transformer. Verify the primary voltage and VA rating against the transformer you are replacing.

Installation Guide

Safety First — Disconnect power at the breaker and disconnect, then verify zero voltage with a multimeter.
Access — Remove the control-panel service cover to reach the transformer.
Document — Photograph all primary and secondary wire connections before disconnecting.
Remove — Label and disconnect the line-voltage primary and 24V secondary leads, then unbolt the transformer from its bracket.
Install — Mount the new transformer, install the 24V barrier, and reconnect every lead exactly per your photo.
Test — Restore power and confirm 24V across the secondary and proper control operation.

Signs You Need a Replacement

No 24V at the thermostat and a blank display.
Contactor or control board won't energize on a call.
Repeatedly blown low-voltage fuse or a burnt transformer.
Secondary voltage measures well below 24V under load.

Shipping & Returns

Ships same day on orders placed 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 WJA330000K00...

$41.60

Frequently Asked Questions

Does this Transformer fit my ICP WJA330000K000A1 — 40VA 208/230V to 24V | Ships Today?

Yes. This is the factory-specified OEM transformer for the ICP WJA330000K000A1 — 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 WJA330000K000A1 — 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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