Hayward h-series low nox pool heater - Gas

[egold24]

Hi All,
I'm trying to fix my Hayward pool heater. Not getting any power to my unit. Pool pumps work. Technician said I needed a new Field Wiring Panel FDXLFWP1930. When I was replacing it, it seemed like one of the wire ends coming from the unit to plug into the new panel was burnt. Attaching a photo here. How can I fix or replace this?
Also, I should not that it seemed like i needed a new panel because a lizard got into the unit and fried the panel.

Any help would be greatly appreciated.

 

[ajw22]

Welcome to TFP.

Show us the board and where that burnt connector plugs into.

@1poolman1 you ever see this problem?

 

[egold24]

Welcome to TFP.

Show us the board and where that burnt connector plugs into.

@1poolman1 you ever see this problem?

See attached. Let me know if that’s helpful.

 

[ajw22]

It is not clear to me what terminal the burnt connector plugs into.

 

[egold24]

It is not clear to me what terminal the burnt connector plugs into.

It’s the top right section of the board. If that’s the issue, would I need to replace that board as well?

 

[ajw22]

It’s the top right section of the board. If that’s the issue, would I need to replace that board as well?

Can you circle the connector?

Is the connector or the board showing any burning signs?

 

[egold24]

It is not clear to me what terminal the burnt connector plugs into.

Here’s a better photo

 

[ajw22]

Where does the burnt connector slide onto?

 

[egold24]

here..

 

[ajw22]

Now show us pictures of the connector without the plug on it….

 

[egold24]

Now show us pictures of the connector without the plug on it….

This was the old one that I replaced.

 

[ajw22]

This was the old one that I replaced.

That board is toast.

What does that look like on the new board?

 

[egold24]

That board is toast.

What does that look like on the new board?

Here you go.

 

[ajw22]

@1poolman1 @swamprat69 any idea what the connector would be?

 

[1poolman1]

Welcome to TFP.

Show us the board and where that burnt connector plugs into.

@1poolman1 you ever see this problem?

Have never seen it. That is supposed to be a 24V connection sending power to the control module.

 

[egold24]

Appreciate all the help. Just trying to figure out what I need to buy to fix this. Any ideas or links to the parts would be great.

 

[egold24]

Perhaps I replace the board that the burnt connector is coming from? Does anyone know which board I would purchase?

 

[swamprat69]

You are showing both sides of the connections for the 2 wires (at the connector for the "fuse circuit board" and the "control module"). It appears to be burnt off at the 2 pin connector to the "fuse circuit board". The fuse circuit board part number should be FDXLFWP1930. The 2 wires are the low voltage (24V) connection between the fuse circuit board and the control module. The 24V circuit (transformer secondary) is protected by the fuse on the control module AFTER the 24V supply from the fuse circuit board has been applied to the control module. The transformer primary is protected by the 2 slow blow fuses on the fuse circuit board. There is no 24V transformer secondary protection between the fuse circuit board and the control module. Most likely cause would be a direct short of the transformer secondary wires between the fuse circuit board and the control module. Not ruling other causes out but that is where I would check first. I would not replace the fuse circuit board without first checking for the cause of the burnt connector. When replacing the fuse circuit board, I would also replace the 2 wire connection harness between the fuse circuit board and the control module and leave it disconnected at the control module to check for 24V at the spade connectors to the control module first.

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