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What should I do if Hayward pool heater is reading error code SF??

H-Series heater. Code SF or 5F

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  • 12 Answers

The code is SF. This is a teemperature sensor failure. Check the wiring on the electroniics bord and confirm its not damaged and that it is securly plugged in. If all is good than the temperature sensor will need placing.m either a gas fitter or swimming pool reepair center will help with this is your not comfortable replacing it

Posted on Jul 18, 2013

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SOURCE: Pool Heater with communication (CE) Error

Code "CE" stands for communication error and describes a fault between the mother board and the display. I doubt it's the relay causing it though...

Posted on Apr 23, 2010

  • 760 Answers

SOURCE: CE error code on hayward pool heater

CE= Communication Error between Control Module
and Display Interface Assembly
1. Disconnect and then reconnect power to heater.
2. Check for faulty wiring or connection.
Inspect Display Interface Wiring. Ensure Display Interface Plug is securely attached to Control Module. .
3. Control Module and/or Display Interface Assembly
are defective.Replace Control Module and/or Display Interface Assembly.
Here is a linkt oH aywardmanuals:
http://www.haywardnet.com/inground/products/manuals.cfm

Posted on Jul 05, 2010

  • 15 Answers

SOURCE: error code either 5f

Temp sensor failure. The temp sensor should be screwed into the header near the plumbing and is wired in to the control panel ( where you raise or lower pool temp) Almost positive the wire is blk/red

If you unscrew the temp sensor and its corroded ( green) try cleaning it with a wire brush, if it still doesnt work, replace the sensor. Worst case, the new sensor doesnt work, that means the old sensor was fine and its the board that its plugged into thats bad. Not likely, but always possible... sensor is much cheaper then a board so go that route first.

Posted on Aug 22, 2010

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Heater will fire up for only 5 sec. than shuts down. code read out.SF


Thank you for posting your question here on Fixya.com.


An SF error refers to the temperature sensor. Per your Hayward owner's manual:


From your manual, found here: http://www.hayward-pool.com/pdf/manuals/Manual285.pdf


The sensor screws into the inlet/outlet header and has three wires and a plug that make their way to the back of the control board. Check to see if there is damage to the wire(s) and repair if there is. Otherwise you need a new thermistor. Your part number should be IDXLTER1930.


If this answer does not fix your problem, please comment with additional details prior to rating the answer. You may also contact me thru our website at www.arrowpools.net. Positive feedback is appreciated once your problem is solved!

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HRATER WILL NOT COME ON shows a code 5F


the Code 5F is a Temperature sensor failure. The temperature sensor may be defective or the controller board may be defective. If you have an ohm meter the best way to diagnose if the sensor is faulty is to contact Hayward technical support and they can help you diagnose it. If the sensor is ok then the controller board is defective.

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Temp sensor failure. The temp sensor should be screwed into the header near the plumbing and is wired in to the control panel ( where you raise or lower pool temp) Almost positive the wire is blk/red

If you unscrew the temp sensor and its corroded ( green) try cleaning it with a wire brush, if it still doesnt work, replace the sensor. Worst case, the new sensor doesnt work, that means the old sensor was fine and its the board that its plugged into thats bad. Not likely, but always possible... sensor is much cheaper then a board so go that route first.

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