My Pentair IC40 salt cell went dark and quit working. Checked fuse in PC100 power supply and it was blown. Replaced fuse, started pump and blew fuse again. So I pulled the IC40 power cable from the PC100 power supply and replaced fuse. Turned pump on and fuse did not blow and green LED is now on on circuit board in PC100 power supply. So most likely IC40 is bad or needs to be cleaned, but it is over 4 years old now. As the IC40 is now over 4 years old I) bought a, new salt cell. Prior to installing new cell I want to check out the PC100 power supply and insure it is good and will not damage the new salt cell. Now I know the PC100 provides around 30 volts DC to the salt cell and two of the wires are for this power requirement , but there are four wires in the power cable, so what do the extra two wires do, and does anybody have a pin out of power and what the other two wires do in the power connector on the bottom of the PC100 ? Ant trouble procedure for checking the PC100 Power Supply ?
Pentair IC40 Blowing Fuses
- Thread starter jfwireless
- Start date
- Jul 21, 2013
- 66,526
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Welcome to TFP.
www.troublefreepool.com
The flow switch also contains a thermistor that senses water temperature. The water temperature is used for the salinity calculation. If the thermistor is failing the salinity will be incorrect.
Flow switch has 4 wires on cells manufactured before September 2018:
Pentair Intellichlor ICXX SWG - Further Reading
www.troublefreepool.com
The flow switch also contains a thermistor that senses water temperature. The water temperature is used for the salinity calculation. If the thermistor is failing the salinity will be incorrect.
Flow switch has 4 wires on cells manufactured before September 2018:
- Red/black - flow switch
- Green/white - temperature sensor
- Red - flow switch
- White - temperature sensor
- Black - common
Thanks for the reply and welcome !! The flow switch wires into the IC40 itself, the four wires I am talking about are from the IC40 to the PC100 power Supply
Jim
Jim
- Jul 21, 2013
- 66,526
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
- Jul 21, 2013
- 66,526
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Jim,
The fat Red and Black wires will have about 40 VDC without the cell connected..
The two thin wires are for the RS-485 com port..
Thanks,
Jim R.
The fat Red and Black wires will have about 40 VDC without the cell connected..
The two thin wires are for the RS-485 com port..
Thanks,
Jim R.
OK, that answers my question, appreciate the help. I can now work this in the morning and get all resolved.
Thanks !!
Jim
Thanks !!
Jim
So I checked the black and red leads from the PC100 to the salt cell for power, I have 30 VAC not 40 VDC, so I assume the internal circuit board called a surge board also rectifies the AC from the transformer into DC correct? If yes than I need to replace the rectifier on the surge board or just buy a new surge board ?
Jim
Jim
- Jul 21, 2013
- 66,526
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Cells have worked with voltage down to 26V. I would try with that surge board and see if the cell works. The low voltage will not damage anything.
Jim,
'My" system had 35 VDC when the cell was making chlorine and about 40 VDC when the cell was not making chlorine.. That does not mean that all systems are exactly the same.
I agree with Allen.. low voltage will not hurt your new cell.. Fire it up and see if it works..
Thanks,
Jim R.
'My" system had 35 VDC when the cell was making chlorine and about 40 VDC when the cell was not making chlorine.. That does not mean that all systems are exactly the same.
I agree with Allen.. low voltage will not hurt your new cell.. Fire it up and see if it works..
Thanks,
Jim R.
The issue is not voltage, but I have AC rather than required DC? AC might just damage the new cell ?
I checked red and black wires from PC100 to IC40 salt cell for DC first, I got nothing. I than checked for AC and got 30 VAC 60 Hertz. This is not fantom power as the 10 amp fuse in the PC100 blows when connected to the IC40. I am assuming the rectifiers in the surge board are shorted putting raw AC from the transformer directly into the power feed to the IC40.
Jim
Jim
AC voltage reads lower than DC because AC is measured RMS, not peak, but DC is rectified and then smoothed with capacitors and will be close to peak, which is about sqrt2 x RMS, so 30 x 1.41 = 42.
I understand , but I have AC not DC on the power feed to the salt cell !!
Surge Board Repair.
There are two functions for the surge board:- Protect the communication lines between the controller and chlorinator from electrical surges. This is done using clamping diodes and is normally non-destructive, but sometimes the diodes are overloaded and fail. (Some pictures in this forum of this kind of failure).
- Rectify the 24VAC from the transformer through a full-wave bridge rectifier to get ~32VDC for the IC40.
The IntelliChlor Power Center Surge Board P/N 521034Z looks more robust with a large heat sink...
Pentair Intellichlor ICXX SWG - Further Reading
www.troublefreepool.com