What are the specs for this Transformer?

The correct replacement for ICP model RHS090H0AB0AAAA – Class II | 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 RHS090H0AB0AAAA – Class II | Ships Today.

ICP

ICP 24V 40VA Control Transformer for RHS090H0AB0AAAA – Class II | Ships Today

Name: ICP 24V 40VA Control Transformer for RHS090H0AB0AAAA – Class II | Ships Today
Brand: ICP
SKU: 1172619-GEN
Price: 28.95 USD
Availability: InStock

SKU: 1172619-GEN Brand: ICP

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Overview

This OEM 24-volt control transformer powers the low-voltage control circuit of the ICP/Heil/Tempstar RHS090H0AB0AAAA heat pump. It steps line voltage down to 24V to drive the thermostat, contactor coil, reversing valve solenoid (OEM coils 1172619/1175367/1190263), and control relay (OEM 1178205). Rated 40VA, it delivers the regulated control power the system depends on. A failed transformer — from a shorted solenoid, control overload, or burned winding — leaves the unit completely dead with no thermostat response despite line power being present.

Specifications

Spec	Value
Type	Control / Step-Down Transformer
Brand	ICP / Heil / Tempstar / Comfortmaker
Secondary Voltage	24V
Rating	40VA
Class	Class II Low Voltage
Related OEM Parts	1178205 relay, 1172619/1175367/1190263 rev-valve coils

Compatibility

Direct-fit control transformer for the ICP/Heil/Tempstar/Comfortmaker RHS090H0AB0AAAA heat pump and comparable ICP-family units using a 24V/40VA control circuit. Confirm primary voltage and the 40VA rating before installing.

Installation Guide

Safety First – Disconnect power at the breaker and disconnect, then verify zero voltage with a multimeter.
Access – Remove the service panel to reach the control box.
Document – Photograph the primary and secondary wiring before removal.
Remove – Disconnect the line-voltage primary and 24V secondary leads, then unbolt the old transformer.
Install – Mount the new transformer and reconnect leads to match your photo.
Test – Restore power and verify 24V at the secondary and normal thermostat operation.

Signs You Need a Replacement

System dead with no thermostat response
No 24V at the transformer secondary
Burning smell or scorched transformer housing
Repeated control-fuse failures after a shorted 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 24V 40VA Control Transformer...

$28.95

Frequently Asked Questions

Does this Transformer fit my ICP RHS090H0AB0AAAA – Class II | Ships Today?

Yes. This is the factory-specified OEM transformer for the ICP RHS090H0AB0AAAA – Class II | 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 RHS090H0AB0AAAA – Class II | 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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