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Grundfos control unit CU 3 trips to dry running two minutes after its powered on

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 1902 Answers

SOURCE: Unit comes on and runs for 5 minutes, the circuit trips off

30 is the correct size breaker for this unit. It sounds like there is a grounding issue going on in the system. Or off of the Thermostat. Something is grounding out causing the switch to trip. Are you running #10 wire to breaker and the unit? If not you will need to increase your wire size

Posted on Jan 03, 2010

  • 534 Answers

SOURCE: Heat / Cool unit runs approx 45 minutes then trips the breaker

Check the amperage of the breaker or change the breaker out completely with a new one. The tripping problem is that the breaker itself is heating up to the point that the bi-metal in the breaker (safety device) is throwing the breaker off. This could be the problem for you however, I would get an ampherage draw from the unit to insure that the breaker is the proper size for the unit. If you can find what kilowatt the unit is divide that number by the amount of current being supplied and that will give you the breaker size.

Good luck hope I helped you some


Posted on Jan 08, 2010

  • 8909 Answers

SOURCE: microwave runs about 3 to 4 minutes and shuts off

It sounds like the magnetron is not working properly and the temperature sensor is expecting temperature rise, it is not getting any and shuts down.
Hope that expalins it for you.

Posted on Dec 31, 2010

  • 1363 Answers

SOURCE: hot tub trips gfci

spa may be leaking water internally check to see all grounds are hooked up . or you might have a bad gfic

Posted on Sep 11, 2012

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