ICP 40VA Transformer for WJH336000KTP0A1 — 208/230V to 24V Control Transformer | Ships Today
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Overview
This genuine OEM control transformer (part number 1173691) supplies the 24-volt low-voltage power for the ICP / Heil / Tempstar WJH336000KTP0A1 packaged heat pump. It steps the unit's 208/230V line voltage down to 24V at 40VA, energizing the control board, contactor coil, reversing-valve coil, and thermostat circuit. When a transformer fails — usually from a shorted secondary, an overloaded coil, or age — the entire low-voltage side goes dead: the thermostat blanks, the contactor won't pull in, and nothing runs even though line power is present. The listing also pairs with the unit's reversing-valve hardware (barrier 1176032, coil 1172619, and valve/coil assembly 1173708) that share this 24V control circuit.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1173691 |
| Type | Step-Down Control Transformer |
| Brand | ICP (Heil / Tempstar / Comfortmaker) |
| Primary Voltage | 208/230V |
| Secondary Voltage | 24V |
| Rating | 40 VA |
| Fits Model | WJH336000KTP0A1 |
Compatibility
Built for the ICP WJH336000KTP0A1 packaged heat pump and used across the WJH336000 platform produced by International Comfort Products under the Heil, Tempstar, and Comfortmaker brands. Verify your old transformer is stamped 208/230V primary, 24V / 40VA secondary, part 1173691, before ordering.
Installation Guide
- Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter at the line terminals.
- Access — Remove the control-access service panel.
- Document — Photograph all primary and secondary leads before disconnecting.
- Remove — Tag and disconnect the line-voltage primary and 24V secondary leads, then unbolt the failed transformer from its mounting foot.
- Install — Mount the new OEM transformer, matching the correct 208 or 230 primary tap, and reconnect each lead per your photo.
- Test — Restore power and confirm 24V across the secondary; verify the thermostat, contactor, and reversing valve respond.
Signs You Need a Replacement
- No 24V at the control board or thermostat with line power present
- Contactor and reversing valve fail to energize on a call for heat or cool
- Blank or unresponsive thermostat
- Burnt smell, discoloration, or buzzing from 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