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Sundance Spas Filter Cleaning & Maintenance

We all want to enjoy clean, clear hot tub water, and regular filter maintenance plays a significant part in the process.

Your Sundance Spa filters are working all the time to keep your hot tub water free of debris, lotions, oils, products from our bodies and anything we introduce to the hot tubs water.

Dirty, clogged hot tub filters can make it difficult to maintain your hot tub's 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 clean and maintain your Sundance hot tub filters.

680 Series Filters: Pleated Cartridge Filters

680 Series hot tubs feature either 2 x 45 sq ft or 1 x 50 sq ft filters depending on year and model. These filters should be removed and cleaned with a hose once a month and replaced every 12-18 months.​ See below for cleaning instructions.

780 Series Filters: MicroClean 1 Dual Stage Filtration

All 780 Series spas are equipped with the two-piece MicroClean Filtration System. The large pleated filter should be removed and cleaned every 2-3 months, and replaced every 12-18 months. The smaller filter (MicroClean 1) is a fully disposable filter and should not  be cleaned. The MicroClean filter should be replaced every 3-5 months. 

880 & 980 Series Filters: MicroUltra Dual Stage Filtration

All 880 & 980 Series spas come with the two-piece MicroUltra Filtration System. The large outer filter should be removed and cleaned every 2-3 months, and replaced every 12-18 months. The Inner Micro Core filter is fully disposable and should not  be cleaned. The Inner Core filter should be replaced every 6-9 months. 

Cleaning Pleated Filters

Rinsing your pleated filter with a hose will remove debris from it, but an occasional deep cleanse with a suitable solution will help remove organic matter from the filter pleats. Using a product such as 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!

Aqua Magic is a spray on filter cleaner, which works its magic in 5 - 10 Minutes, eliminating the need to find a huge bucket and soak your Sundance hot tub filters overnight. Just spray Aqua Magic all over your pleated filter, wait a few minutes and then hose off. 

Cartridge Cleaner is a more traditional filter cleaning product. Simply add half a bottle of Cartridge Cleaner to 10 liters of warm water, soak overnight then rinse thoroughly. Both filter Cleaning options have proven themselves to successfully remove grease, body oils, lotions and scale from Sundance hot tub filters.

Here are a few additional tips on cleaning your hot tub filters:

  • Avoid the use of laundry detergents & household cleaners - They can cause major foaming issues in your hot tubs water if you use them, and can also degrade your filter, meaning you will have to replace it far sooner than normal.
  • Rotate your Filters - Keeping a spare  filter on hand so you can clean them throughout the year is a good idea. If you use regular Cartridge Cleaner, you can use your spare filter while the original is soaking overnight.
  • Use of power washers or dish washers is not recommended. The high water pressure can damage the pleated filter material, and reduce the lifespan of your hot tub filters.
  • Don't use bleach on your Sundance hot tub filters. Although it may seem to do a good job of cleaning them, it degrades and weakens the filter fibers and greatly decreases the life expectancy of your hot tubs filters. The use of bleach on your filters can also have a negative impact on the quality and clarity of your water once they are replaced in the hot tub.

"FC" or "Filter Change" Icon

A programmable filter timer can be set to remind you to clean or replace your Sundance hot tub filters.

When the "FC" or "Filter Change" icon appears on your display, keep in mind it is a reminder to check the condition of your filters, and they may not necessarily need to be changed at that time.

On 880 & 980 series spas, the Outer Filter reminder range is "OFF" to "180 DAYS" and the Inner Filter reminder range is "OFF" to "90 DAYS". When the timer expires, the change filter message will appear. If you hit "Snooze" the message will reapperar in 10 days. Go in to the "Water Care" menu to re-set the reminders for a later date.

On 680 & 780 Series spas, the "FC" reminder range is "OFF" to "180 Days". Once the timer expires, a "FC" message will appear. This is a reminder to check the condition of your filters, they may not neccessarily need replacing at this time. Go in to the "FC" menu setting to re-set your timer to remind you in the future to check your filters.

"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 Switch" 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.
  • Before you turn the power back on, make sure the spa is free from debris (Toys, Ducks etc.)
  • 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.

Please contact any of our six locations (Burlington, Hamilton, Mississauga, Oakville, St. Catharines & Vaughan) for replacement filters or more information on how to maintain your Sundance hot tub.

The Sundance Spa Store is a provider of high quality Sundance Spas and Finnleo Saunas who service the GTA & Niagara Regions.

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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