Question about Hayward 250kbtu Ng Pool Heater - Inground

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We have a 2 yr old Hayward H350FDN pool heater that has given us problems from the beginning. This year the error codes have been bd and then switches over to CE, I have checked the continuity and everything checks out. Where do I go from here and what needs to be checked or replaced?

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Posted on Jan 02, 2017

  • 78 Answers

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

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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:

Posted on Jul 05, 2010

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SOURCE: Pool heater shuts off after a few second

You didn't indicate your exact model. There are different versions of the H200 series. If it is milivolt then there is no electric, Must have correct milli-volt pilot generator. If it's electronic, check the air flow pressure switch on the combustion air.

Posted on Jul 18, 2010

  • 78 Answers

SOURCE: I'm receiving an error code CE on my Hayward H

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.

Posted on Jul 25, 2010

Testimonial: "Great advice. Working like a charm. No loose wiring. 2 large beetles between the circuit board and the display. Blew them out and it works great."

  • 368 Answers

SOURCE: The code CE is showing

The CE code indicates a "Communication Error". This indicates there is a communication issue between integrated control board (ICB) and the display board (DB). The DB is the one mounted on the backside of the keypad.The ICB is the one back in the heater behind the display board. The two boards are joined by a ribbon cable that passes communication between the two. I suggest you contact the Hayward technical support number and they may be able to help you with the next step. I hope this helps.


Posted on Aug 08, 2011

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Thank you for posting your question here on

BD or BO? I am not aware of a BD error but BO means the heater is set to bypass operation which means it is set up to run with a remote. If you have a remote in the system it is failing; if not you need to reset the dip switch (#2) to the off position. For help with these steps please refer to the owner's manual here.

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 Positive feedback is appreciated once your problem is solved!

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1 Answer

Pool Heater with communication (CE) Error

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