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Sundance 880 chelsee no display and transformer problems

Sundance 880 chelsee no display and transformer problems


  #1  
Old 03-04-21, 09:50 AM
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Sundance 880 chelsee no display and transformer problems

I have a Sundance 880 chelsee 2011 and I have no power at the display and the breaker doesn't trip. I have a transformer that goes to the circuit board that says it's supposed to be 12v but it is showing 5 volts. I purchased a new transformer and the new one also said 5volts. Also attached to the transformer wires was the led light panel for the tub so I disconnected it and the transformer then showed 8 volts now the highest I have Read. I have power to everything in the tub and the fuse is fine on the main board. What is causing this? Thank you.
 
  #2  
Old 03-04-21, 07:15 PM
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Welcome to the forums.

My information is showing a dual primary/ dual secondary transformer.
Input: 120v/240v and output: 12.4vac @ 2.25A and 9.25vac @ .5A.
Is that correct ?
If not I'll need the part number off that board.
You need to make sure you're using the right input wires based on 120 or 240v.
With the plug unplugged you should be getting two different voltages.

Sundance 880 chelsee manual - 2012 (pdf)
 
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Old 03-08-21, 07:10 AM
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Here is the transformer that I have had for the past 2 years I bought a new one because I throught it went bad but im not sure. It only uses one plug

Here is my board. I believe my hottub is either the 780 series or 880 series I wasnt sure.
 
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Old 03-08-21, 09:43 PM
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It looks like your spa is only using the 12.4v output. The blue looks capped off.
There would need to be a heavy load to lower the voltage on that transformer.

The area circled in yellow is the DC power supply driven by that 12vac. That's more than likely where the trouble is. It should be getting red hot during operation to be lowering the transformer voltage that much.

 
 

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