
The defrost thermostat PL001 4171A is located inside the freezer, either directly on the evaporator or indirectly on the evaporator.
The replacement part for the PL001 4171A Defrost Bimetal Thermostat is to clip onto the evaporator and protect the evaporator from overheating during the defrost cycle. If your refrigerator isn't defrosting properly, you can test both the thermostat and the heater to find out what's wrong. For this repair, you'll need a Phillips screwdriver, a 1/4-inch nut screwdriver, a flat-blade screwdriver, a pair of wire strippers, a roll of electrical tape, and some butt joints.


ltem NO | PL001 4171A |
Use | Defrost/Temperature control/Protection |
Appliance | refrigerators, freezer |
Reset type | Automatic |
Base material | stainless steel, epoxy resin,silver,copper |
Voltage | 120V/240V |
TEMPERATURE | OPEN:60F° CLOSE:32°F |
Differential | According to the requirement |
Cycle of endurance | 100,000 |
Tolerance | Refer to the regulation |
Resistive amps | 10A / 5A |
Contact material | Silver |
Dielectric Strength | Parts between electriferous components and non-electriferous ones can bear 2000V (3750V for Reinforced insulation type) 50Hz AC |
Insulation Resistance | With a DC 500V megger, borne DC 500V, the tested value is over 10MW. |
Resistance Between Terminals | Below 50mW |
Temperature characteristics | Normal close, Normal open |
Maximum ambient temperature | 90°C |
Diameter of bimetal disc | 25.4mm(1″) |
Line | Color: white/brown/yellow/blue Length: customized |
Terminal type | Customized (Refer to our specification) |
Cover/Bracket | Customized (Refer to our specification) |
Sample price | Free sample,USD 50 freight charge.Refund after mass order |




What is a bimetal defrost thermostat?
Bimetal Defrost Thermostat Specifications. This clip-on thermostat will sense the temperature increase in the evaporator during the defrost cycle and will cycle the defrost heater off after the ice or frost is melted.

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