Pentair Dual-Speed 340042 Died

Luclin999

Well-known member
Jun 12, 2014
113
Houston
My Pentair 340042 was running fine yesterday in low power mode however when I switched it to High it simply died. No noises..nothing.

Went out today and bought a new capacitor for it (thinking that was the most likely cause) but replacing that didn't help.

Tested the wiring and there is power going to the pump.

Any ideas, or am I just going to have to buy a new pump?

Thanks..
 

cowboycasey

Gold Supporter
LifeTime Supporter
TFP Guide
Jul 3, 2013
5,405
Southern OK
I have the same pump, I wish I knew the answer.. This will kick your thread back to the top and see if anyone else has seen this or can help..

Do you have the switch in the back or does it switch with automation?
 

Luclin999

Well-known member
Jun 12, 2014
113
Houston
Do you have the switch in the back or does it switch with automation?

Switch in the back.

It was running fine on low, but after I turned it off and flipped the switch to high to run the crawly it wouldn't turn on.

I am wondering if the relay blew but I am not too keen on ordering a $180 part for it that might not fix the problem.
 

mas985

TFP Expert
LifeTime Supporter
May 3, 2007
13,952
Pleasanton, CA
Pool Size
20000
Surface
Plaster
Chlorine
Salt Water Generator
It could be the centrifugal switch in the back of the motor.
 

Luclin999

Well-known member
Jun 12, 2014
113
Houston
I pulled the pump and checked the switches and relays, all seem to be functional.

So I just went ahead and ordered a new pump. Should be here on Friday.
 
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