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KP115 failed now rapidly cycles power on and off

KP115 failed now rapidly cycles power on and off

KP115 failed now rapidly cycles power on and off
KP115 failed now rapidly cycles power on and off
2025-07-13 21:15:38
Model: KP115  
Hardware Version: V1
Firmware Version: 1.0.21
I walked into my garage a few minutes ago and heard a relay switching on and off rapidly. The KP115 which powers my hot water recirculating pump has failed. The LED on the plug is flashing between blue and orange, and as I said, the relay is opening and closing rapidly; about 2 or 3 times per second. I unplugged it several times and it does the same each time I plug it back in.
I suppose there is nothing to do about it, and I'll use an extra one I have on hand.

 

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#1
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3 Reply
Re:KP115 failed now rapidly cycles power on and off
2025-07-15 17:15:56

  @Don.M 

 

Please note that the Kasa plug does NOT support high-power inductive loads driven by motors, which often draw a high inrush current at startup, causing damage to the smart plug over time. What types of loads can the Tapo/Kasa plug support?

 

Is your hot water recirculating pump an inductive load device? Make sure to check its specifications carefully to confirm the compatibility.

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#2
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Re:KP115 failed now rapidly cycles power on and off
2025-07-15 20:43:11

  @Wayne-TP Although plugged into 120 V AC, the motor is a brushless DC motor with a rated maximum draw of 0.54A AC. (The unit is a Taco 006e3 ECM Circulator, tacocomfort . com ). I have had the pump since 2001 and the smart plug has been on it forever.

 

I put the smart plug there to show me the power the pump consumed, and never to switch it on or off. Now that I know the power, I don't need to have the plug in the circuit.

 

 

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#3
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Re:KP115 failed now rapidly cycles power on and off
2025-07-23 11:27:18

  @Don.M 

 

Oh, I'm quite surprised that your plug has lasted this long. Given this situation, it seems more like an anomaly due to normal wear and tear, so it might be time to consider getting a new device.

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