Hi have a customer with a Pentair 400 heater about 7 years old has a weird issue . Start pump heater begins cycle comes on temp comes up 1-2 degrees then shuts down and has service system light on .. Cleaned the filter has good flow has no error codes just service system , Pressure switch?
Pentair 400 Nat Gas Heater
- Thread starter plumbchris
- Start date
- Jul 21, 2013
- 52,845
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Welcome to TFP.
Check the thermal regulator.
As a test you can run the heater with the thermal regulator removed.
www.troublefreepool.com
Check the thermal regulator.
As a test you can run the heater with the thermal regulator removed.
Pentair MasterTemp Heaters - Further Reading
www.troublefreepool.com
Hi Returned this morning another issue same heater seems it lost the programming of set temp from 103dg down to 65? power remained on this sounds like a control board now?
- Jul 21, 2013
- 52,845
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
