Operating instructions

Troubleshooting
44
Problem Possible Cause Solution
Spa only heats on Dirty or clogged filter(s) Clean Filter(s) See
High Speed Pump instructions on Page 18
or
Heat light illuminates Water level low Fill spa to correct level
Only on High Speed See page 13
(D Series Only)
“T” valve closed or Open and lock all “T” partially
open valves
Flashing O3 on Control Panel
Spas with Ozonators Ozone working No Action required
Spas with out Ozonators Irrelevant Call customer care or service
(TS 702 Series Control Panels) to purchase
“FLO” appears on Pump(s) not running See “Pump(s) will not
Control Panel Start” above
or
“FLO” flashes and Water level low Fill spa to correct level
alternates with
Temperature
Pump Surging See “Pump Surging”
Section above
Dirty or Clogged Check filter installation Filters
Clean filter(s) See page 18
Dry/Dr4 - Inadequate water 1. Closed T-Valves 1. Open T-Valve by lifting handle all
detected in heater. (Displayed the way up.
on 3rd occurrence of “dr” message) 2. Loss of prime 2. Prime pump while pump is on by
Spa is shut down. loosing union.
(TS 702 Series Control Panels) 3. Circulation Pump Malfunction 3. Call service to order a new pump
or to set up a service appointment.
4. Dirty filters/old filters 4. Remove and clean filters or replace
with new ones.
OHH (Overheat) The spa has shut 1. Partially closed T-Valve 1. Lift T-Valve all the way up.
down. One of the sensors has 2. Outside temperature is at 2. Remove some hot water and add cool
detected that the spa water is or around 110°F/43.3°C water. Turn blower on, this will cool
110° F (Approximately 43.3° C) water down, then remove the cover.
3. Dirty filters/old filters 3. Remove and clean filters, replace
with new ones.
Breaker keeps Tripping Improperly wired ground Contact your electrician
or or ThermoSpas
Breaker will not Reset Spa Controller needs repair Customer Care
Spa Heater needs repair See wiring chart
Spa Leaks Loose union , hose spigot open Check and tighten all
unions, close hose spigot
Leaking Barb Fitting Check hose to barb Connection.
Clamp hose if required, Call
Thermospas for service.
Leaking Glue fitting Call ThermoSpas for service
Frequently Asked Questions
45
FAQs
Q: What happens if I don’t change my ThermoClear cartridge in four months?
A: The ThermoClear cartridge will start to become ineffective after four months. So, along with having water
that could potentially have a high TDS reading, prohibiting chemicals from being effective, you will have no
method of sanitizing your water leading to potential health risks.
Q: Which is better to use on a weekly basis with ThermoClear: Spa Activator or Chlorine?
A: If you are not in any way allergic to Chlorine, then we strongly recommend using it. Chlorine has a higher
ORP rating (oxidation reduction potential) which is the measure of oxidizing power. The oxidizing power is
the ability to burn away organic matter. However, you must continue to use the Spa Activator each time
you use your hot tub. Please refer to the comparison chart on page 15 for a comparison of the various
sanitization methods.
Q: What should I do if my dog or cat jumps into the hot tub?
A: Unfortunately animals in hot water produce over 50 times more bacteria than humans, because of this you
have to drain and refill your spa.
Q: What happens if I put too much sanitizer into the water?
A: Too much Spa Activator can cause the skin to itch and potentially produce a skin rash. Over-shocking your
water could potentially damage your hot tub cover, and this would not be covered in the warranty. Also, an
excess of sanitizer might not produce any reading on your test strip because you have gone beyond its
reading capabilities. This has led people to add more Spa Activator which can make matters worse.
Q: How can I reduce my sanitizer level?
A: There are two simple methods to reduce sanitizer levels:
1. Drain 1/2 of your water and refill the hot tub; or
2. Remove the cover and turn on the air bubbling system. Monitor the sanitizer level with test strips
until the recommended level is achieved.
Q: Why does ThermoSpas recommend against the use of Biguanide or copper based algaecides in my spa?
A: 1. Biguanide and copper based algaecide products may attack critical parts of the pumps and plumbing
leading to premature failure of the spa.
2. Chlorine may not be used with Biguanide based sanitizers. Over time certain bacteria will develop a
tolerance to Biguanide. When this occurs chlorination of the spa is the most effective means of
destroying these bacteria. At this time, it is common for most spas to switch to a chlorine and/or
bromine sanitizer.
Q: Can I change sanitizers?
A: The use of ThermoClear and Chlorine can be interchanged in the same spa water. All other sanitizers
require the draining of the hot tub. We recommend the use of ThermoSpas’ Jet Line Cleaner for cleaning
out the lines.
Q: Why can’t I use swimming pool chemicals?
A: A hot tub is dramatically different from a swimming pool because you are working with water that is both
heated and also aerated. The ratios of people are also quite different. For example, four people in a hot
tub is equivalent to 300 people in an average size pool. The heated water and higher bather load ratio can
cause organic contaminants not found in swimming pools. Because of this, the chemical make-up of swimming
pool chemicals is usually quite different from that of hot tub chemicals. One example is that swimming pool
chemicals are not buffered so they can create havoc on the pH level of your hot tub water.
Q: Why are my pillows/headrests discolored or bleached out?
A:
Headrests that are constantly submerged in spa water that is not properly treated with chemicals may
discolor.
However, even if you have been performing your water maintenance faithfully and correctly, the
pillows
will still naturally discolor over time. ThermoSpas does not provide warranty coverage for bleaching
or discoloration of spa pillows.
Q: I have done everything I could and my water is still messed up.
A: ThermoSpas offers free computerized testing of your water. If you reach the point of having no luck with
keeping your water in balance, and have tried draining and refilling your tub, you can send us a sample of
your hot tub water for analysis. Please contact our customer care department.