07:37AM | 06/17/03
Member Since: 06/14/03
3 lifetime posts
I have a KT3 IUL Hartell Condensation pump to my central AC in the basement. The pump runs when empty (float in the down or supposed off position) and stops when full (float in the up or suppsoed on position). Did you get the problem fixed? It is almost as if the polarity in the switch is somehow reversed. It worked fine yesterday when I cleaned it out, but for some reason today it is working opposite to what it is supposed to. The float triggers a switch which engages or disengages the pump. There are two leads coming off the switch ... one is a black leadwire and the other is a blue leadwire. I am stuck here, any help would be much appreciated.



03:56PM | 06/17/03
Member Since: 03/01/03
22 lifetime posts
I don't know if your model has this feature,but sometimes if you turn a float upside down you reverse the operation from normally open to normally closed. This would make it operate backwards. Just a thought.


06:37AM | 06/18/03
Member Since: 06/14/03
3 lifetime posts
Do you mean if you flip the "float switch" upside down you may reverse the operational function? The float switch is just a little black box with a piece of metal through the center attached to a metal arm that opens and closes the circuit. When that arm moves up by the float, contact is made with the arm to the black box, and when the float drops as the water level in the reservoir decreases, the arm breaks contact with the black box opening the circuit. Just by flipping the switch upside down, could that reverse the operation? If so, if I turn the unit upside down again will that fix it? Can I buy a new switch like that somewhere like a hardware store? I will check the switch to see if it says NC or NO on it. Thanks.


06:37PM | 08/29/07
Member Since: 08/28/07
2 lifetime posts
I have the exact same problem.

I have a hartell condensate pump kt-15-1ul.

It seems to work opposite of what I would expect now.

I first took a look at it because it seems to be running all the time.

But when I opened it up to try to figure out how it worked, it seems that when the float is at its lowest the pump turns on, and if i lift the float the switch turns off (opens the circuit) thereby turning the pump motor off.

Did you find a solution? I will try the suggestion of turning it upside down to see if that reverses the polarity of the switch? Else is the switch itself replaceable?


12:18PM | 09/03/07
Member Since: 08/28/07
2 lifetime posts
I must post a reply - the fix was quite easy. I sent an email to Hartell and in less then 12 hours, received a response telling me to send them my home address and then sent me a replacement - free of charge. Wonderful customer service.

Once I received the new switch, 1 or 2 days later, it was obvious that the old one was bad and replacing it was very easy.

Thanks for listening.


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