Tom Camp Posted November 25, 2020 Report Share Posted November 25, 2020 My 2004 Sundance shows 4 flat lines on the display. If I trip the gfci and turn it back on it flashes multiple error codes and multi temp readings before stopping and displaying 4flat lines across the display. Repeated this cycle 10+ times and max run time is less than 30 seconds. Doesn’t trip gfci Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted November 25, 2020 Report Share Posted November 25, 2020 Remove the filters and turn off main power for 5 mins to allow the board to fully reset. Leave filters out until issue is fixed. Remove them from the equation. This might help: https://www.jaysooter.com/2018/11/28/sundance-watchdog/ Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted November 26, 2020 Report Share Posted November 26, 2020 Four dashes is called "watchdog" and is the computer equivalent of shrugging your shoulders. Most often, watchdog is a faulty sensor. You can test them with an ohm meter. It can also be triggered by low flow from clogged filter or failing circulation pump, failing transformer, or incoming power issue. But I'd test the sensors first. 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.