Hi Limit Switch (42001-0063s)

$75.99

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Part # 6290-070

By Pentair Pool Products


Details

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Part # 6290-070

Manufacturer Code 42001-0063S

Dimensions 1.62" L x 0.87" W x 1" D

Alternate Part #'s 420010063S

Product Description

HI LIMIT SWITCH (42001-0063S)

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?     Asked on 11/11/2018 by stan

Pentair master temp 400 heater. The heater shut down and shows "service heater" light on the display panel, after a few minutes the heater would cycle back on, then off again. The LED on the inside heater panel showed "HLS" (High Limit switch). I replaced the "thermal regulator" and that seemed to fix the problem, now the heater shuts down as before and I get the "HLS" LED diagnostic light again. Any ideas, bad high limit switch? The heater is about 8 years old.
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A  Answered on 11/12/2018 by InyoPools Product Specialist Lennox H.

Hi, Stan. Based on the error code, the High Limit Sensor is bad and will need to be replaced. You can also check the wires or the PCB. 
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