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Heat & Filtration Settings + Filter Maintenance

We all want to enjoy warm, clean, clear Hot Tub Water, and heat and filter settings as well as regular Filter Maintenance all play a significant part in making it happen.

In this blog we will give you instructions on how to set your heat mode & filter cycles, and offer tips on how to maintain your filters and advice on what to do if you ever get an error message on your control panel.

Heating and filter cycles described in this blog are for 2018 and newer spas. For instructions on how to set older models, please contact any of our 6 locations (Burlington, HamiltonMississauga, Oakville, St. Catharines & Vaughan).

Heating Mode

There are 3 different Heat Modes on your Sundance Spa. "Economy" mode will allow your hot tub to heat only between the hours of 5 PM and 7 AM, "Day" mode will allow the water to heat only between the hours of 7.00 AM and 5.00 PM. These hours are not programmable.  "Auto" allows the heater to heat, at all times, in order to maintain your preset temperature. We reccommend setting your spa to "Auto" so that the water is always warm and ready for you to use.

If you ever notice that your hot tub water temperature has dropped, but there are no error messages displayed on your control panel, you should check that the spa is set to "Auto" mode. If it has been changed to "Economy" or "Day" the water temperature will gradually drop until the next heat cycle comes on later in the day. Here are the instructions for setting the Heating Mode on your Sundance Spa.

680 Series: Press the "Menu" button repeatedly until you get to the "HEAT" menu. Use the temperature up or down buttons to scroll through heating options. Select "ECO", "DAY" or "AUTO" and press "Jet 1" to confirm and activate the setting.

780 Series: Press the Menu button and use the temperature up or down buttons to find "HEAT". Use the temperature up or down buttons to select "ECO - Economy", "DAY" or "Auto" and then press "Jet 1" to confirm and activate the setting.

880 & 980 Series: From the "Settings" menu, press "Heat & Filter" and then select your desired heating mode by pressing "Auto", "Economy" or "Day" - Your selection will now appear in dark brown, which confims your selection is active.

Filtration Cycle Settings

It is advisable to have your filter settings set for the maximum time of filtration, especially when the hot tub is new or the weather is particularly cold. Here are the instructions for adjusting your filtration cycle settings.

680 SeriesPress the "Menu" button and Select "PF" to display the current start time. Press the temperature up or down buttons to adjust start time. Press "Jet 1" to confirm and activate desired start time. Then use temperature up or down buttons to adjust the number of cycles per day (1-4). Press "Jet 1" to set, then use temperature up or down buttons to adjust the duration of the cycles (1,2 or 3 hour cycles) Press "Jet 1" to confirm. A minimum of 8 hours per day of filtration is reccommended, especially in colder climates.

780 Series: Press the "Menu" button to enter the settings menu, and select "PF" for Primary Filter. Use the temperature up or down buttons to select your desired start time, then press "Jet 1" button to confirm and activate setting.

Next, use the temperature up or down buttons to select the duration of time that your Circulation Pump, ClearRay UV-C Water Purification System & ClearRay ProTec Automatic Oxidizer are in operation. Press "Jet 1" button to confirm and activate setting.

Once your settings are confirmed, scroll through the menu to "SF" to set secondary filtration level.

There are 3 options for secondary filtration -  "HOL - Holiday", "LT - Light Mode" or "HVY - Heavy Mode". The factory default setting is "Holiday", so that secondary filtratrion is turned off. "Light" activates two 10 minute cycles (8 AM and 8PM) every other day. "Heavy" activates two 10 minute cycles (8 AM and 8 PM) every day. The time and duration of these cycles cannot be adjusted. Use the temperature up or down buttons to make a selection, then press "Jet 1" to confirm and activate the setting.

880 & 980 Series: Press the "Menu" button to enter the settings menu. Select "Heat & Filter".

Select "1" for Primary Filter. Adjust "Start Time" as required and press the check mark button to confirm and activate the setting. Select 12 AM if you are planning on using 24 hour filtration.

Next, adjust the number of hours per day that your Circulation Pump, ClearRay UV-C Water Purification Sysytem and optional ClearRay ProTec Automatic Oxidizer are in operation. Select 12 AM for 24 hour filtration. Press the check mark button to confirm and activate the setting. Press the "Return" button (Top right hand corner) to return to the "Heat & Filter" menu.

Back on the "Heat & Filter menu", Press "2" for Secondary Filter, and select "Infrequent", "Frequent" or "Away" mode. The factory default setting is "Away", so that secondary filtratrion is turned off. "Infrequent" activates two 10 minute cycles (8 AM and 8PM) every other day. "Frequent" activates two 10 minute cycles (8 AM and 8 PM) every day. The time and duration of these cycles cannot be adjusted.

Select your desired setting but touching the button of your choice (your selection you will now appear in dark brown). Once selection is complete, press "Return" button to go back to Heat & Filter Menu.

If you own a 780, 880 or 980 Series Spa, We reccommend that your spa should have the Primary Filtration set for 24 hours (start at 12.00 AM, end at 12.00 AM) and that Secondary Filtration should be set to "Frequent" or "Heavy Use". This will give you the maximum possible filtration.

​​It is up to you as the Hot Tub owner how often you want your Hot Tub to circulate, but keep in mind, the more the spa does on it's own, the less you will have to do to maintain your water.

Filter Care

Dirty, clogged Hot Tub filters can make it difficult to maintain your Hot Tubs water and can put strain on your pumps or cause "Open Flow Switch" or "FLO" errors to occur on your Sundance Spa. here is a quick guide on how to maintain your Sundance Hot Tub Filters.

680 Series Filters50 Sq Ft -  The 680 Series filters should be removed and cleaned once a month and replaced once a year.​

780 Series FiltersMicoClean 1 Filter System – This is a two-piece filter system. The large pleated filter should be removed and cleaned every 2-3 months, and replaced every 18-24 months. The smaller filter (MicroClean 1) is a fully disposable filter and should not  be cleaned. This filter should be replaced every 3-5 months. 

880 & 980 Series FiltersMicroUltra Filter System – This is a two-piece filtration system. The large Outer filter should be removed and cleaned every 2-3 months, and replaced every 18-24 months. The Inner Micro Core filter is fully disposable and should not  be cleaned. This filter should be replaced every 6-8 months. 

All Pleated Filters should be cleaned with a solution at least once a year to remove organic matter from the filters pleats. Rinsing with a regular garden hose will keep debris at bay, but a deep cleanse with a Cartridge Cleaner or AquaMagic will increase the efficiency of your Sundance hot Tub filters, help your pumps perform at their best and keep your water looking and feeling great!

"Open Flow Switch" or "FLO" Error Messages

A dirty, plugged or clogged filter can cause an "Open Flow Switch" or "FLO" message, which means your Hot Tub will start to cool down as it cannot heat or filter correctly.  It is wise to check your filters regularly especially during the cold winter months to avoid running in to any issues.

If you ever see an "Open Flow Swich" or any "Flo" error message on your control panel you should:

Turn off the hot tub at the GFCI breaker.

Completely remove filter or filters from the hot tub.

Wait approx 10 - 15 minutes. While the filters are out of the spa and the power is still off, Check the filter bay for debris (leaves etc) that could be causing a blockage.

Turn the hot tub back on at the GFCI breaker, but leave the filters out of the tub. Run the hot tub for at least an hour with the filters still out to ensure the error is cleared. You may need to re-start the spa a couple of times before the error clears.

If the "Open Flow Switch" or "FLO" message is gone after turning on the hot tub back on, your hot tub filter or filters need to be cleaned or replaced. If after you have tried a re-set without the filters the error message is still showing, contact our service department for further steps you can take or to schedule a service call.

During the cold winter months, you may need to place a space heater in your hot tubs equipment area to prevent freezing if your spa heater shuts down through an "Open Flow Switch" error. Check out our blog "Cold Weather Hot Tub Care" for instructions on placing a space heater in your spa.

The Sundance Spa Store is a provider of high quality Sundance Hot Tubs and Finnleo Saunas who service the GTA and Niagara Region.

We deliver and service our products in cities such as Cambridge, Waterdown, Carlisle, Grimsby, Stoney Creek, Brantford, Binbrook, Caledonia, Smithville, Vineland, Pelham, Crystal Beach, Wainfleet, Port Colborne, Beamsville, Thorold, Brampton, North York, York, East York, Woodbridge, Etobicoke, Nobleton, Caledon, Georgetown, Toronto, Milton, Orangeville, Halton Hills, Welland, Markham, Richmond Hill, Niagara On The Lake, Fort Erie, Thornhill, Niagara Falls and many more! 

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