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Troubleshooting
GENERAL OPERATION TROUBLESHOOTING GUIDE
Entire spa is inoperative
Spa does not heat; jets
and light operate
(Display reads “FLO”)
Jets weak or surging
Display reads “FLC”
Light inoperative
• Power failure / not plugged in
• GFCI tripped
• Heater high limit thermostat tripped
• Pressure Switch tripped
• Pressure Switch senses flow through heater
even though the jet pump is off
• Spa water level too low
• Filters clogged / Jet intake screens clogged
• Jet nozzles closed / Air valve closed
• Bulb burned out
• Heater high limit thermostat tripped
• Temperature sensor problem
Display reads “HL”
(Entire spa inoperative)
Display reads “Prr”
• Check power source
• Reset GFCI; call for service if it will not reset.
• Disconnect power for at least thirty seconds to reset heater high limit. If it
will not reset, check for clogged filter. If tripping continues, call for service.
• Check for clogged filter. The Pressure Switch will reset when the flow of
water through the heater has been restored. Call for service if the Pressure
Switch trips frequently.
• Contact an Authorized Service Technician
• Add water
• Clean filters / Clean jet intake screens
• Open jet nozzles / Open air valve
• Replace bulb
• Disconnect power to the spa for at least thirty seconds to reset the heater
high-limit. If tripping continues, clean the filter, then if tripping still occurs,
call for service.
• Disconnect power for at least thirty seconds. If “Prr” is still displayed after
power is restored, call for service.
Problem
Probable causes
Solutions
SPA WATER MAINTENANCE TROUBLESHOOTING GUIDE
Cloudy Water
Water Odor
Chlorine Odor
Musty Odor
• Dirty filters
• Excessive oils / organic matter
• Improper sanitization
• Suspended particles / organic matter
• Overused or old water
• Excessive organics in water
• Improper sanitization
• Low pH
• Chloramine level too high
• Low pH
• Bacteria or algae growth
• Buildup of oils and dirt
• High pH
• Low sanitizer level
• Low pH
• Low sanitizer level
• Unsanitary water
• Free chlorine level above 5 ppm
• Total alkalinity and/or pH too low
• High iron or copper in source water
• High calcium content in water – total
alkalinity and pH too high
Organic buildup /
scum ring around spa
Algae Growth
Eye Irritation
Skin Irritation / Rash
Stains
Scale
• Clean filters
• Shock spa with sanitizer
• Add sanitizer
• Adjust pH and/or alkalinity to recommended range
• Run jet pump(s) and clean filters
• Drain and refill the spa
• Shock spa with sanitizer
• Add sanitizer
• Adjust pH to recommended range
• Shock spa with sanitizer
• Adjust pH to recommended range
• Shock spa with sanitizer – if problem is visible or persistent, drain, clean
and refill the spa
• Wipe off scum with clean rag – if severe, drain the spa, use a spa surface
and tile cleaner to remove the scum and refill the spa
• Shock spa with sanitizer and adjust pH
• Shock spa with sanitizer and maintain sanitizer level
• Adjust pH
• Shock spa with sanitizer and maintain sanitizer level
• Shock spa with sanitizer and maintain sanitizer level
• Allow free chlorine level to drop below 5 ppm before spa use
• Adjust total alkalinity and/or pH
• Use a metal deposit inhibitor
• Adjust total alkalinity and pH – if scale requires removal, drain the spa,
scrub off the scale, refill the spa and balance the water
Problem
Probable causes
Solutions
TROUBLESHOOTING
Watkins Manufacturing Corporation strives to provide the most trouble-free spas on the market. Should you experience any problem whatsoever,
do not hesitate to contact your authorized Hot Spot
®
Spa Dealer. Here are some tips to help you to diagnose and rectify some more common
sources of trouble yourself, if you choose to do so.
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