Whirlpool Washer Error Code 37

Error code 37 is a heater fault indicating that the thermistor did not detect a temperature rise of at least 3 degrees Fahrenheit after the heater element had been running for 5 minutes. The control board monitors the thermistor signal continuously during the heating cycle and logs this code when that minimum threshold is not met. This points to a problem with the heater element, the thermistor, or the wiring connecting them. Running service mode test 8 is the recommended first step to isolate the faulty component.

It is not recommended to continue running wash cycles with error 37 active. The washer halts heating when this fault is detected, meaning cycles that require heated water will not complete properly and fabrics may not be washed effectively. Additionally, an underlying wiring or component issue could worsen over time if left unaddressed.

Resetting the washer may temporarily clear the error code from the display, but the fault will return as soon as the machine attempts another heating cycle and the same condition is detected. Because error 37 is triggered by a real performance failure in the heating circuit, a reset does not fix the underlying problem. The heater element, thermistor, and related wiring need to be tested and the defective component replaced to resolve the fault permanently.

A knowledgeable DIYer can diagnose and repair this fault by running service mode test 8 and using a multimeter to check continuity on the heater element and thermistor. Replacing a failed heater element or thermistor is a moderately involved repair that requires accessing the internal components of the washer. If you are not comfortable working around electrical components or disassembling the machine, hiring a technician is the safer choice.

Repair costs vary depending on the faulty component. A replacement thermistor is generally an inexpensive part, while a heater element typically costs more. If professional labor is involved, total repair costs including parts and service can range from around $100 to $300 or more depending on your location and the specific parts needed. Diagnosing the root cause before ordering parts is important to avoid unnecessary expenses.