ICP Outdoor Thermostat for ZAXB030EPC1 — T6031H Temperature Control | Ships Today
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Overview
This is a genuine OEM outdoor thermostat (part number 1054570, T6031H series) for the ICP/Tempstar/Heil ZAXB030EPC1 packaged heat pump. The T6031H is a remote temperature controller that senses outdoor air temperature and signals the control system to manage defrost timing, auxiliary heat staging, and compressor lockout. When this thermostat fails, the unit may run electric strip heat continuously, fail to lock out the compressor in extreme cold, or short-cycle during defrost — driving up energy bills and reducing comfort. Replacing a failed outdoor thermostat restores proper staging and protects the compressor. This is a direct-fit OEM component, not a generic substitute, ensuring correct temperature calibration and terminal layout for your equipment.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1054570 |
| Type | Outdoor Temperature Thermostat (T6031H) |
| Brand | ICP / Tempstar / Heil |
| Function | Outdoor air sensing / compressor lockout / aux heat staging |
| Fits Model | ZAXB030EPC1 |
| Fitment | OEM direct replacement |
Compatibility
Designed as the factory outdoor thermostat for the ICP/Tempstar/Heil ZAXB030EPC1 packaged heat pump system. The T6031H platform is shared across many Carrier-family packaged heat pumps; always verify part number 1054570 against your unit's wiring diagram before installing.
Installation Guide
- Safety First — Disconnect power at the breaker/disconnect and verify zero voltage with a multimeter before touching any wiring.
- Access — Remove the control-access service panel on the outdoor unit.
- Document — Photograph all wire connections and the thermostat mounting position before disconnecting.
- Remove — Disconnect the sensing leads and control wiring, then unfasten the old thermostat from its bracket.
- Install — Mount the new T6031H, route the sensing element to the same location, and reconnect wiring exactly per your photo.
- Test — Restore power and verify proper staging, defrost, and outdoor temperature response.
Signs You Need a Replacement
- Electric auxiliary/strip heat runs constantly even in mild weather
- Compressor fails to lock out during very cold outdoor temperatures
- Erratic or stuck defrost cycles
- No staging response to changing outdoor temperature
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