Defrost Timer for Westinghouse Fridges (RJ390P, RJ390M, RJ280M, SR300A-R, N476C)
$12.20
✓ In stock
Defrost Thermostat Klixon Type 240V (SL5708, L50-25F, RF027M)
Klixon-type 240V defrost termination thermostat (SL5708, L50-25F, RF027M) for frost-free fridges and freezers.
$13.50
AUD
- Klixon type, 240V
- Part numbers SL5708, L50-25F and RF027M
- Clips onto the evaporator coil and is wired in series with the defrost heater
Your model number is on the rating label inside the fridge. We check it instantly.
Order by 6pm Sydney time
Dispatched the same business day
Ships from Colebee, NSW
Australia Post, Australia-wide. Shipping calculated at checkout.
Clear returns information
Read our return conditions and consumer rights. Refund policy
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Same-day dispatch
Orders by 6pm Sydney time, business days.
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Honest labelling
Marked “for” a brand or generic, never called genuine unless it is.
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Fair returns
Clear return conditions. Your Australian Consumer Law rights apply.
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Real people to help
Call 0405 972 558 or email sales@fastfridgespares.com.au
Complete the repair
Explore related spare parts and helpful guides. Check compatibility before adding a part to your order.
Is this the right part?
Quick answer: this is a universal Klixon-type defrost termination thermostat. Compatibility is as listed by the supplier, so match the part number, markings and mounting with your old thermostat before you order.
| Specification | Detail |
|---|---|
| Type | Defrost termination thermostat, Klixon type |
| Voltage | 240V |
| Part numbers | SL5708, L50-25F, RF027M |
| Listed as compatible with | Simpson, Electrolux, Westinghouse, Maytag, Whirlpool, Amana |
| Listed as suitable for | Upright freezers, mini freezers, mini fridges, portable fridges |
| Warranty | 1 year manufacturer warranty |
| Condition | Brand new, in original packaging |
Signs the thermostat may have failed
- Ice keeps building on the freezer back wall even though the defrost heater tests fine
- The fridge section warms up while the freezer stays cold
- The thermostat looks bulged, cracked or discoloured
Why buy from Fast Fridge Spares
A real Australian business
Online store in Colebee, NSW. Phone 0405 972 558 or email sales@fastfridgespares.com.au.
We tell you what you are buying
Parts are labelled for a brand or generic. We never call a part genuine unless it is.
Fit help before you pay
Send your model number and a photo of the existing part. Our team can help you check before ordering.
Secure checkout
Pay through Shopify Checkout.
Clear returns
See our refund policy for return conditions. Your Australian Consumer Law rights apply.
Frequently asked questions
What does a defrost thermostat do?
During defrost it lets power reach the heater while the coil is cold. When the coil warms up it opens and ends the heating, so the fridge returns to cooling.
Which part numbers does this thermostat cover?
SL5708, L50-25F and RF027M. It is a Klixon type defrost termination thermostat, 240V, listed as compatible with Simpson, Electrolux, Westinghouse, Maytag, Whirlpool and Amana. Compatibility is as listed by the supplier.
What are the signs the thermostat has failed?
Ice keeps building on the freezer back wall even though the defrost heater tests fine, the fridge section warms up while the freezer stays cold, or the thermostat looks bulged, cracked or discoloured.
What happens if a defrost thermostat fails?
If it fails open, the heater never runs and frost builds up. If it fails closed, the heater can run too long.
Does it have a warranty?
Yes. It has a 1 year manufacturer warranty and is supplied brand new in original packaging.
Who should fit it?
It is part of a 240V defrost circuit, so fitting should be done by a licensed refrigeration mechanic or electrician.
How does a defrost thermostat work?
During defrost, the thermostat lets power reach the heater while the coil is cold. When the coil warms up, it opens and ends the heating, so the fridge returns to cooling. If it fails open, the heater never runs and frost builds up. If it fails closed, the heater can run too long.
| Defrost part | What it does | Fault sign |
| Defrost timer | Starts the defrost cycle at set intervals | Never defrosts. Frost builds up |
| Defrost heater element | Melts frost off the evaporator coil | Open circuit (OL) on a multimeter |
| Defrost thermostat (this part) | Ends the heating once the coil warms | Ice returns even though the heater tests fine |
Check before you order
Match the part number (SL5708, L50-25F or RF027M) and mounting with your old thermostat. Compatibility is as listed by the supplier. See our defrost heaters and defrost timer, or send your model number through Find Your Part.