ICP Outdoor Thermostat for ZAXB040EPB1 — Honeywell T6031H Temperature Control | Ships Today
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Overview
This is a genuine OEM outdoor thermostat (temperature controller) for ICP/Tempstar/Heil heat pump systems, replacing factory part number 1054570 — a Honeywell T6031H-style sensing control. Mounted in the outdoor section, it senses ambient temperature and signals the control system to manage defrost timing, auxiliary/backup heat lockout, and compressor staging. When this control fails, the system can run electric backup heat unnecessarily, fail to enter or exit defrost correctly, or short-cycle the compressor. The T6031H is a snap-acting bimetal thermostat with adjustable setpoint and a fixed differential, rated for low-voltage control circuits.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1054570 |
| Description | TSTAT OD T6031H X (Outdoor Thermostat) |
| Type | Outdoor temperature control / sensing thermostat |
| Brand | ICP (Tempstar / Heil) |
| Base Control | Honeywell T6031H |
| Circuit | Low-voltage (24V) control |
| Action | SPST snap-acting, adjustable setpoint |
Compatibility
Engineered as a direct-fit replacement for ICP model ZAXB040EPB1 and other Tempstar, Heil, and Comfortmaker heat pump units that use OEM thermostat 1054570. Always confirm the part number stamped on your existing control before ordering.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker; verify zero voltage with a multimeter.
- Access — Remove the outdoor unit control-access panel.
- Document — Photograph all wiring and the sensing-bulb/capillary routing before disconnecting.
- Remove — Disconnect the low-voltage leads, release the mounting bracket, and withdraw the old thermostat and its sensing element.
- Install — Mount the new control, route the sensing element to the same location, and reconnect the leads per your photo.
- Test — Restore power and verify correct defrost and backup-heat operation.
Signs You Need a Replacement
- Electric/auxiliary backup heat runs even in mild outdoor temperatures
- System fails to enter or exit defrost properly (ice buildup on the coil)
- Compressor short-cycles or stages incorrectly
- No continuity across the control at the rated setpoint 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