ICP Thermostat for YD042GA — Crankcase Heater 75/55 Temp Switch | Ships Today

Overview

This genuine OEM crankcase heater thermostat (part number 14124800) fits the ICP YD042GA and is a bimetal temperature switch with a 75/55 setpoint — it closes to energize the compressor crankcase heater as temperatures fall to roughly 55°F and opens again near 75°F. By switching the crankcase heater on in cold weather, it keeps refrigerant from migrating and pooling as liquid in the compressor crankcase, preventing oil dilution and slugging at start-up. A failed switch leaves the heater off in cold conditions, risking compressor damage, or stuck on, wasting energy.

Specifications

Compatibility

Built for the ICP YD042GA and equivalent Tempstar, Heil, and Comfortmaker condensing units and heat pumps equipped with a crankcase heater and a 75/55 thermostat switch. Verify the setpoint and mounting style against your original part.

Installation Guide

1. Safety First — Disconnect power at the outdoor disconnect and verify zero voltage with a multimeter.
2. Access — Remove the condenser service panel and locate the switch on the compressor body or near the crankcase heater.
3. Document — Photograph the wiring and mounting position before disconnecting.
4. Remove — Disconnect the leads and unclip or unscrew the old temperature switch.
5. Install — Mount the new switch in firm contact with the same surface and reconnect the leads per your photo.
6. Test — Restore power and confirm the crankcase heater energizes in cold conditions.

Signs You Need a Replacement

• Crankcase heater stays cold in low ambient temperatures
• Compressor noisy or hard-starting on cold mornings
• Crankcase heater runs continuously in warm weather
• Switch shows no continuity change across its setpoint

Shipping & Returns

Ships same day on orders placed before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.