True 800316 OEM Defrost Termination Switch, 37T23

Product Overview

True 800316 is an OEM freezer defrost termination switch. True identifies the switch as 37T23 with the marking L55-15F. It is a temperature-responsive component in the defrost control circuit.

Part Identification

• Manufacturer: True Manufacturing
• OEM part number: 800316
• Switch identification: 37T23
• Manufacturer-listed marking: L55-15F

Function and Diagnosis

The switch responds to temperature as part of the freezer defrost sequence. Excessive ice buildup, an abnormal defrost cycle or a switch that fails the prescribed electrical checks warrants investigation. These symptoms can also arise from heaters, wiring, controls or airflow problems. A qualified technician should test the circuit using the cabinet service information.

Compatibility and Ordering

True lists applications including GDM-23F, T-23F and T-49F. Confirm the exact cabinet serial number and parts breakdown before purchase. Compare the original switch marking, mounting and lead arrangement. Isolate electrical power before service and follow the cabinet wiring diagram.

Frequently Asked Questions

What type of switch is 800316?

It is a freezer defrost termination switch, identified by True as 37T23.

What does the L55-15F entry mean here?

It is the switch marking supplied in True’s catalog. Match it to the original component and the applicable service specification.

Is it a manually operated door switch?

No. This part belongs to the temperature-responsive defrost circuit.

Does it fit every T-23F freezer?

Check the complete model, serial number and parts breakdown before ordering; a model name alone is not a final fitment check.

Does heavy evaporator ice prove the switch is defective?

No. Heater, control, wiring and airflow faults can produce similar symptoms and should be tested.

Can I connect the wires by appearance alone?

Use the specific cabinet wiring diagram and original circuit identification. Lead appearance does not establish a safe or correct connection.

Part Matching Help

Browse our True refrigeration parts guide or contact PartsDirectOnline with the cabinet model, serial number and clear photos of the original part and its markings.