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Error code CE on hayrwrd pool heater h series

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Error code refers to communication error between the ingnition board and the display board. This can happen if, believe it or not, the unit gets wet - usually after a heavy rain. Cut the power at the breaker, remove the cover, and use a hairdryer to make sure the board and spaces behind the display panel are all dry. Ten minutes with the hairdryer should do it. Replace the cover, restore power. The error should be gone. If not, then possible that one of the boards is defective, in which case you'll need to call a tech.

Posted on Jul 15, 2010


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The CE code is showing on screen

Communication error

If communication between the ignition board and the display board is not established

within 3 s of power-up an error will be displayed. After communication is

established, if it is lost for 30 s, the error will be displayed. The error code will
be cleared upon a valid data exchange between boards.

May 18, 2012 | Hayward H-series Electronic Gas Pool...

2 Answers

The code CE is showing on my Hayward pool Heater what does that mean and can I fix it

I have just repaired my H400 series pool heater from the 3rd CE error in only 3 years since the pool and heater were installed. In each case the circuit board (F0059-456600) was in some way to blame .... I will explain.
Case 1 : Only months after installation the CE error came up. Rain water had got in around the display module and water-damaged the circuit board. It was replaced under warranty. Since then I keep a big plastic lid covering the display unit when the heater is not in use.
Case 2 : 1 year from new the CE error came back. On investigation it was found that a rat had managed to get inside the heater (there are big gaps around the pipe entries) - it had then partly chewed through the ribbon cable joining the two circuit boards together. Display circuit board was replaced at my cost - and all was well again. I also rat-proofed the heater - eliminating all the big openings with chicken wire.
Case 3 : Fired up the pool heater for the first time this year and CE came up. I pulled the display module and this time found obvious signs of blackening / burning on the display circuit board under the big green resistor (R1). Luckily I had kept the old circuit board from the previous time and was able to make 1 good board from the two I had - back in action now.
So in my experience it has been the display circuit board each time - and it only takes a phillips-head screwdriver and about 10 minutes to get it out.

Jul 27, 2011 | Hayward 250kbtu Ng Pool Heater - Inground

1 Answer

Have a Hayward H400 FDP. CE error, probably year or so. If the boards have to be replaced, why together, versus replace the one that is bad?

The CE error code means Communication Error. This is a loss ov communication between boards. It could be the wiring, it could be no power to one of the boards. There is a possibility that if you have a short circuit in one board that is bad, and you replace the other one, that it could damage the new board too. Do you have your manual? you can download one from

Oct 01, 2010 | Hayward H Series Pool & Spa Heater 400k...

1 Answer

I'm receiving an error code CE on my Hayward H series 250 propane pool heater which is a communication error between the ignition board and the display board

Open up the control panel access door on the front. (the display). Remove the 2 screws at the top and tilt the assembly out. There should be a tab on the bottom that helps keep the assembly stable. Check all the connections on both boards for fit and broken wires. If all is ok, I would shut the supply power off, then back on and see if the data transfer works. If not, bad boards.

Jul 23, 2010 | Hayward H Series Electronic Ignition...

1 Answer

I have an H400 heater (H400IDL2) and I get the CE trouble code, how can you determine which board is bad?

CE is a communication error between the display board and the ignition board. If you've had a lot of rain lately it could just be that moisture inside the unit is causing the error rather than a bad board. Take the cover off and blast the inside with a hairdryer for a few minutes, making sure to get the boards and connecting wires. That sometimes clears the error.

Jul 05, 2010 | Hayward H Series Pool & Spa Heater 400k...

1 Answer

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:

Jul 04, 2010 | Hayward 250kbtu Ng Pool Heater - Inground

1 Answer

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...

Feb 15, 2010 | Hayward H-Series 200k BTU Millivolt Heater...

1 Answer

Error code CE on hayrwrd pool heater h series

This is the 3rd time I have had this same problem. First two times they replaced all the circuit boards under warranty. It seems as if there is an inherrent design flaw with this heater. Reseating cables on both of the last two times seemed to fix the issue. However the tech replaced the boards anyway.

Apr 12, 2009 | Hayward H Series Pool & Spa Heater 400k...

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