Fridge Defrost Thermostats & Timers
Shop a defrost thermostat for your fridge or freezer, plus defrost timers for refrigerators and freezers. Replacement parts from $12.20, delivered fast Australia-wide.
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Defrost Thermostats & Timers We Stock
Replace the defrost thermostat or defrost timer in your fridge, or complete the job with a defrost heater.
Shop Defrost Thermostats & Timers
3 parts available, dispatched from NSW and delivered Australia-wide.
Defrost thermostat and defrost timer parts for fridges and freezers
In a frost-free fridge, the defrost timer decides when to defrost, the defrost heater melts the ice, and the defrost thermostat switches the heater off once the coil is clear. If the defrost thermostat or timer fails, ice builds up on the evaporator and the fridge stops cooling. Fast Fridge Spares stocks replacement defrost thermostats and defrost timers for refrigerators and freezers, delivered Australia-wide from our NSW warehouse.
Defrost thermostat for fridge and freezer
Our Klixon-type defrost thermostat (SL5708, L50-25F, RF027M) is a 240V defrost termination thermostat that clips onto the evaporator coil. It is listed as compatible with Simpson, Electrolux, Westinghouse, Maytag, Whirlpool and Amana fridges, and suits upright freezers, mini fridges and portable fridges. If you need a defrost thermostat for a fridge or freezer, this is a common replacement to check first.
Defrost timer for refrigerator
- Westinghouse defrost timer – a defrost timer for refrigerator models RJ390P, RJ390M, RJ280M, SR300A-R and N476C (TMDE 520 ZC1, 220–240V, 10A).
- Defrost timer 6hr 21min – a universal defrost timer for freezer and fridge applications.
Defrost thermostat price and defrost timer price
Our defrost thermostat price is currently $13.50, and our defrost timer price ranges from $12.20 to $13.80 (AUD). See each product for the current price and stock.
Signs you need a defrost thermostat replacement
- Ice builds up on the back wall of the freezer even though the defrost heater tests OK.
- The fridge section warms up while the freezer stays cold.
- The freezer never seems to go into defrost, or stays in defrost too long.
A technician can check a defrost thermostat for continuity when it is cold (it should be closed below its set point) and test the timer by advancing it into the defrost position. If the heater itself has failed, see our fridge defrost heaters.
How to choose the right part
Match the part number or model on your old thermostat or timer, and check your fridge model number. A defrost thermostat replacement or timer replacement is a 240V job and should be done by a licensed refrigeration mechanic or electrician.
More parts: condenser fan motors, coolroom controllers and fridge spare parts Perth.
Why Choose FastFridgeSpares?
Providing reliable fridge spare parts with fast delivery and expert customer support across Australia.
Genuine Quality Parts
Quality replacement parts selected for reliable performance and a proper fit.
Parts for Commercial & Domestic
Parts for coolrooms, display fridges, bar fridges, freezers and home refrigerators.
Fast Australia-Wide Delivery
Quick dispatch from NSW with reliable delivery to every state and territory.
Expert Parts Support
Send us the model number or a photo and our team will help you find the right part.
Can't Find Your Part?
Send us your fridge brand, model number and part number and we'll help you find the right replacement.
Defrost Thermostat & Timer FAQs
The defrost thermostat switches the defrost heater off once the evaporator coil has warmed and the ice has melted. If it fails open, the heater never turns on and ice builds up.
Our defrost thermostat price is currently $13.50 (AUD) for the Klixon-type SL5708 / L50-25F / RF027M.
Our defrost timer price currently ranges from $12.20 to $13.80 (AUD).
Yes. We stock a defrost timer for Westinghouse refrigerator models RJ390P, RJ390M, RJ280M, SR300A-R and N476C.
Yes. Our 6hr 21min defrost timer suits freezer and fridge applications. Match it to the timer in your appliance before ordering.
If ice keeps building up on the evaporator but the defrost heater tests OK, the defrost thermostat or timer is the likely cause. Have a technician test both.
These are 240V parts, so replacement should be done by a licensed refrigeration mechanic or electrician.
Not Sure Which Part You Need?
Send us your fridge brand and model number and we'll help you identify the right part.