What are the specs for this Transformer?

The correct replacement for ICP model RHS243L0CA0AAAA — 24V 40VA | 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 RHS243L0CA0AAAA — 24V 40VA | Ships Today.

ICP

ICP Transformer & Reversing Valve Coil for RHS243L0CA0AAAA — 24V 40VA | Ships Today

Name: ICP Transformer & Reversing Valve Coil for RHS243L0CA0AAAA — 24V 40VA | Ships Today
Brand: ICP
SKU: 1172619
Price: 45.44 USD
Availability: InStock

SKU: 1172619 Brand: ICP

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Overview

This OEM 24-volt control package fits the ICP RHS243L0CA0AAAA heat pump and includes the reversing valve coil (part 1172619) and 24V DPST control relay (part 1178205, T92P7A22-24). These low-voltage components carry the 24V control signal that energizes the reversing valve and switches the unit between heating and cooling. A failed coil or relay is one of the most common reasons a heat pump gets stuck in one mode, runs continuously, or fails to change over on a thermostat call. Both components are rated for the 24VAC control circuits used in residential split-system heat pumps.

Specifications

Spec	Value
Part Numbers	1172619, 1178205
Type	Reversing Valve Coil / 24V Control Relay
Brand	ICP (Tempstar / Heil / Comfortmaker)
Coil Voltage	24 VAC
Relay	DPST, 24V (T92P7A22-24)
Rating	40 VA control circuit
Fit	OEM Replacement

Compatibility

Engineered for the ICP RHS243L0CA0AAAA heat pump and shared across the ICP family of brands including Tempstar, Heil, and Comfortmaker units that use the same 24V control platform. Always confirm your existing part numbers (1172619 / 1178205) before ordering.

Installation Guide

Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
Access — Remove the service panel to reach the control box and reversing valve.
Document — Photograph all wire colors and terminal positions before disconnecting anything.
Remove — Slide the old reversing valve coil off the valve stem and unclip the failed relay from its socket or mounting plate.
Install — Seat the new coil on the valve stem, mount the new relay, and reconnect wiring exactly per your photo.
Test — Restore power and command both heating and cooling to confirm the unit changes over correctly.

Signs You Need a Replacement

Heat pump stuck in heating or cooling and won't change over.
No 24V signal at the reversing valve when measured at the coil.
Buzzing, chattering, or a relay that won't pull in.
Intermittent operation that tracks with temperature or vibration.

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 & Reversing Valv...

$45.44

Frequently Asked Questions

Does this Transformer fit my ICP RHS243L0CA0AAAA — 24V 40VA | Ships Today?

Yes. This is the factory-specified OEM transformer for the ICP RHS243L0CA0AAAA — 24V 40VA | 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 RHS243L0CA0AAAA — 24V 40VA | 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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