Cove Dishwasher Error Code 100179

Error code 100179 is a MHP Temperature Sensors High Gradient fault. It means the dishwasher's control system detected that the heating element was active but the temperature was rising too rapidly, indicating the heater was running without proper water circulation or adequate water in the sump. The dishwasher shuts down the heater automatically to prevent damage.

You should not continue running the dishwasher while this fault is active. The error indicates the heater may be operating without adequate water contact, which can damage the heating element, surrounding components, or in extreme cases create a hazard. Diagnose and resolve the underlying cause before resuming normal use.

Repair costs vary depending on what failed. Descaling or adjusting the water supply involves little to no parts cost. Replacing a wash pump motor typically runs in the range of $150 to $400 including labor, while a temperature sensor replacement is generally less expensive, often $75 to $200. Control board replacement, if needed, can range from $300 to $600 or more depending on parts and labor rates in your area.

Some causes are DIY-friendly. Start by checking that the dishwasher is filling with water completely and that you can hear the wash pump running during the cycle. If scaling is visible on the heating element, descaling the unit may resolve the fault. However, if the pump motor or a temperature sensor has failed, those repairs typically require replacing parts and may benefit from a qualified technician.

A reset may clear the code temporarily, but if the underlying condition persists, such as a pump not running or a low water fill, the fault will return. Resetting without addressing the root cause risks repeated shutdowns and potential component damage. Always identify and correct the cause before relying on a reset.