What are the specs for this Transformer?

The correct replacement for ICP model WJH330000K000A2 — 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 WJH330000K000A2 — 208/230V to 24V | Ships Today.

ICP

ICP 40VA Transformer for WJH330000K000A2 — 208/230V to 24V | Ships Today

Name: ICP 40VA Transformer for WJH330000K000A2 — 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 is the genuine OEM control transformer (part number 1173691) for the ICP Tempstar Heil WJH330000K000A2 heat pump. Rated at 40VA, it steps the unit's 208/230V line voltage down to the 24V control voltage that powers the thermostat circuit, contactor coil, reversing-valve solenoid, and other low-voltage components. When the transformer fails — typically from a shorted secondary, an overloaded control circuit, or age — the entire low-voltage system goes dead: no thermostat response, no contactor pull-in, and no call for heating or cooling. A 40VA rating provides adequate headroom for the contactor and reversing-valve coil loads on this WJH-series unit.

Specifications

Spec	Value
Part Number	1173691
Type	Step-Down Control Transformer
Brand	ICP / Tempstar / Heil
Rating	40VA
Primary Voltage	208/230V
Secondary Voltage	24V
Fits Model	WJH330000K000A2
Fitment	Genuine OEM replacement

Compatibility

Direct-fit replacement for the ICP Tempstar Heil WJH330000K000A2 heat pump and related WJH-series units using a 208/230V-to-24V 40VA control transformer. This unit's control box also houses the 24V reversing-valve coil (1172619), valve assembly (1173708), and low-voltage barrier (1176032), all powered by this transformer. Confirm part number 1173691 and the 208/230V primary before ordering.

Installation Guide

Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter.
Access — Remove the service panel to reach the control compartment.
Document — Photograph every primary and secondary lead before disconnecting.
Remove — Label and disconnect the leads, then unbolt the failed transformer from its mounting.
Install — Mount the new transformer, match the 208/230V primary taps to your supply voltage, and reconnect the 24V secondary per your photo.
Test — Restore power and confirm 24V at the secondary and proper thermostat/contactor operation.

Signs You Need a Replacement

No 24V control voltage; thermostat is dead
Contactor or reversing-valve coil will not energize
Tripped or blown low-voltage fuse that recurs
Burnt smell or visible scorching at the transformer

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 40VA Transformer for WJH3300...

$45.44

Frequently Asked Questions

Does this Transformer fit my ICP WJH330000K000A2 — 208/230V to 24V | Ships Today?

Yes. This is the factory-specified OEM transformer for the ICP WJH330000K000A2 — 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 WJH330000K000A2 — 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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