ICP 40VA Transformer 208/230V to 24V for WJH324000KTP0A1 | Ships Today
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Overview
This OEM control transformer (part #1173691) supplies the 24-volt control power for your ICP/Heil/Tempstar WJH324000KTP0A1 heat pump. It steps the 208/230V line-voltage primary down to a 24V secondary at 40VA, powering the thermostat, control board, contactor coil, and reversing-valve coil. When the transformer fails — open winding, shorted secondary, or a popped internal fuse link — the entire low-voltage control circuit goes dead: no thermostat display, no contactor pull-in, and a system that won't respond to any call. This listing covers the transformer for the WJH324000KTP0A1; related 24V components for this model include the reversing valve coil (#1172619), reversing valve with coil (#1173715), and 24V barrier (#1176032).
Specifications
| Spec | Value |
|---|---|
| Part Number | 1173691 |
| Type | Control Transformer |
| Brand | ICP / Heil / Tempstar |
| Rating | 40 VA |
| Primary Voltage | 208/230 VAC |
| Secondary Voltage | 24 VAC |
| Related Parts | 1176032 barrier, 1172619 rev-valve coil, 1173715 rev-valve w/coil |
Compatibility
Engineered for the ICP/Heil/Tempstar/Comfortmaker WJH324000KTP0A1 heat pump and other Carrier-family units using a 40VA, 208/230-to-24V control transformer. Confirm the primary tap voltage and VA rating match your existing transformer before installing.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker; verify zero voltage at the transformer primary with a multimeter.
- Access — Remove the unit's electrical access panel.
- Document — Photograph the primary (line) and secondary (24V) wiring and the chosen voltage tap before disconnecting.
- Remove — Label and disconnect all leads, then unbolt the old transformer from the panel.
- Install — Mount the new transformer, wire the correct 208 or 230V primary tap, and reconnect the 24V secondary per your photo.
- Test — Restore power and confirm 24VAC at the secondary and normal control operation.
Signs You Need a Replacement
- No 24V control power — dead thermostat and unresponsive system
- Measured 0V at the transformer secondary with line voltage present
- Burnt smell, discolored case, or visibly overheated windings
- Repeated control-fuse blowing traced to a shorted 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