I opened the old motor end and found corrosion like an old battery and very damp. We had a sand filter with gallons of water literally busted open within 2 feet of the unit. Sand and water went everywhere. So it probably got wet along with the ICM is my guess. It seems dry inside the chamber. Do you know what sensors have to work before ignition occurs. I check the therm regulator and changed the thermostat too. I read somewhere along the blogs that the flute stack sensor had to be changed too with the new circuits board design.
Mastertemp 400 AFS error no power to blower
- Thread starter MLCarlson
- Start date
- Jul 21, 2013
- 52,480
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
It's like if a car is flooded, the insurance company just totals it because the damage cannot really be accurately assessed and it becomes a nightmare to fix.
It seems like you have been very thorough in going through everything.
At this point, I am out of ideas.
Did you get a blower assembly with a new air vent orifice? If so was it for a 400k?
Have you check all the tubing and barbed orifices on air vent?
Have you check all the tubing and barbed orifices on air vent?
Well! I feel I need to make one final post on this thread for my problem. It pains me but I owe it to whom ever checks these for help. My Mastertemp is working now. The last problem with AFS error was because when the blower motor was installed (not by me, I always take pictures before and after) the air flow tubes were not attached correctly. The new motor did not come with a diagram for tube placement. So the AFS switch white side was attached to air blower cap. The correct positions are in picture. White cap has a short tube to gas valve. This is embarrassing but I hope it helps. All my other parts but a new AFS switch were still needed.
