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Fix my Pool and Spa
Fix my Pool and Spa, Owner / Technition
Category: Pool and Spa
Satisfied Customers: 1100
Experience:  Over 24 years in pool and spa service and construction
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I have a Marquis Epic hot tube that is showing all dashes on

Customer Question

I have a Marquis Epic hot tube that is showing all dashes on the display panel. The 10-button display functions just fine, except for the dashes. How do I resolve this issue?
JA: I'll do all I can to help. How long have you been dealing with this?
Customer: A couple of weeks.
JA: Do you plan on doing the work yourself?
Customer: yes
JA: Anything else we should know to help you best?
Customer: I just replaced the display panel, thinking that was the problem. But I get the same dashes on the new display. It resets fine, then goes to dashes.
Submitted: 1 month ago.
Category: Pool and Spa
Expert:  Fix my Pool and Spa replied 1 month ago.

The dashes are an indication of bad sensors. You would need to replace the thermostat and the high limit sensor as the circuit board says they are not working properly. It may only be one of them that is bad but I would replace both at the same time.

Look on the circuit board where the sensors plug in then trace the wires back to each sensor and replace.