CE ERROR - Hayward H400FDN Low NOx Natural Gas Pool or Spa Heater

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CE error code on Hayward pool heater. CE= Communication Error between Control Module. and Display Interface Assembly

PS4 error CE-34878-0 occurred occasionally to users. Don't worry, though! It's not difficult to fix. We're giving some troubleshooting steps here to help. For steps : https://www.errorcodeexpert.com/how-to-fix-ps4-error-code-ce-34878-0/

According to page 21 of the owner's manual, the following are known error codes: IE= Water Inlet Error, OE=Drain Error, UE=Unbalance Error, dE=Door Error, tE=Thermistor Error, FE=Overfill due to Faulty Water Valve, PE=Water Level Sensor Error, CE and LE=different Motor Errors, and PF=Power Failure.


its a motor error
check the brushes

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CE Communications Error If there is any breakdown in communication between the machine controller and the motor controller, CE flashes and the unit beeps once.

Some common causes of CE errors include:

· Conformal coating on serial communications pins between the machine controller and motor controller. After disconnecting power to the unit, try scraping this coating off the pins.

· Check the resistance values between the serial communications pins with the connectors in place. Make sure the harness does not have a bad connection.

· Check the quick disconnect at the motor terminal. The drive motor must be hooked up properly or a CE error will occur.

· Drive motor thermal protector has opened.

·Motor controller is not powered or fuse has opened. Replace motor controller.

Press STOP/CANCEL to clear the display.

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...

CE Communications ErrorIf there is any breakdown in communication between the machine controller and the motor controller, CE flashes and the unit beeps once.


Some common causes of CE errors include:

· Conformal coating on serial communications pins between the machine controller and motor controller. After disconnecting power to the unit, try scraping this coating off the pins.

· Check the resistance values between the serial communications pins with the connectors in place. Make sure the harness does not have a bad connection.

· Check the quick disconnect at the motor terminal. The drive motor must be hooked up properly or a CE error will occur.

· Drive motor thermal protector has opened.

·Motor controller is not powered or fuse has opened. Replace motor controller.


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"CE" Communications Error If there is any breakdown in communication between the machine controller and the motor controller, "CE" flashes and the unit beeps once.
Some common causes of "CE" errors include:
·Conformal coating on serial communications pins between the machine controller and motor controller. After disconnecting power to the unit, try scraping this coating off the pins.
· Check the resistance values between the serial communications pins with the connectors in place. Make sure the harness does not have a bad connection.
· Check the quick disconnect at the motor terminal. The drive motor must be hooked up properly or a "CE" error will occur.
· Drive motor thermal protector has opened.
·Motor controller is not powered or fuse has opened. Replace motor controller.

Press STOP/CANCEL to clear the display.

ce error means not hooked up property to your email server

CE means communications error

If there is any breakdown in communication between the machine controller and the motor controller, "CE" flashes and the unit beeps once.
Some common causes of "CE" errors include:
·Conformal coating on serial communications pins between the machine controller and motor controller. After disconnecting power to the unit, try scraping this coating off the pins.
· Check the resistance values between the serial communications pins with the connectors in place. Make sure the harness does not have a bad connection.
· Check the quick disconnect at the motor terminal. The drive motor must be hooked up properly or a "CE" error will occur.
· Drive motor thermal protector has opened.
·Motor controller is not powered or fuse has opened. Replace motor controller.

Press STOP/CANCEL to clear the display.