MasterTemp 400 board replaced AFS LIGHT ON

Oneuhgolf

New member
Feb 21, 2020
4
Montgomery, Texas
Hi, I had no lights on panel so I replaced my main board. Once power applied, I got service heater light and a AFS light. I can reset power and all lights go off until I hit pool button for 5 seconds. It doesn’t immediately turn anything on. I also have hold the off button down for awhile before it turns everything off. While researching this problem, I also discovered I have a bad by-pass as I found the black valve looking piece in my line. In the past when my heater ran, it clanked and cycled. Is there a master reset or any setup required on the board after install?
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
23,724
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
Welcome to TFP.

Did you replace the broken bypass valve?

The air flow switch (AFS) senses the pressure drop across the air metering orifice. Does the blower turn on? With no air flow the heater will not turn on. Check the wiring connections to the board. Especially the blower connection.

 

Oneuhgolf

New member
Feb 21, 2020
4
Montgomery, Texas
Welcome to TFP.

Did you replace the broken bypass valve?

The air flow switch (AFS) senses the pressure drop across the air metering orifice. Does the blower turn on? With no air flow the heater will not turn on. Check the wiring connections to the board. Especially the blower connection.

I’ve ordered the by-pass so it’s not fixed yet. The blower does not come on. Actually nothing happens when the pool button is pushed except a temp reading, service heater and AFS light. It doesn’t start anything.
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
23,724
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
Focus on figuring out why the blower is not running.
 

Oneuhgolf

New member
Feb 21, 2020
4
Montgomery, Texas
I’ve ordered the by-pass so it’s not fixed yet. The blower does not come on. Actually nothing happens when the pool button is pushed except a temp reading, service heater and AFS light. It doesn’t start anything.
The main board has now issued a E01 error and a system service light. The light under panel next to temp fault connection is now on. I also can’t get board to shut down without cutting power. Any ideas what’s going on?
Focus on figuring out why the blower is not running.
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
23,724
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
The main board has now issued a E01 error and a system service light. The light under panel next to temp fault connection is now on. I also can’t get board to shut down without cutting power. Any ideas what’s going on?

The "E01" code you see displayed is an indication of an open water temperature sensor.

I think you need to check the wiring you touched when you changed the board.
 
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setsailsoon

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LifeTime Supporter
TFP Guide
Oct 25, 2015
3,845
Stuart/FL
Pool Size
12800
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-30 Plus
Clanking is indication the bypass valve was operating and you may have heard it break. Once you fix the valve try to start and check the error codes. With the E001 you may have a bad sensor or bad/incorrect connection.

Chris
 
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