21SC-CF & SC-MP Service Manual
Display Is Flashing
If digital thermometer water temperature reading is 112°F or higher and
keypad display isn't showing correct temperature, carry out the following
tests:
2• Make sure temperature probe
is properly connected.
If it is, replace probe.
3• Replace Spa Pack if display is still
flashing.
(Refer to "How to Replace Spa
Pack" section of this manual.)
1• Verify if temperature probe
is in contact with water and if
cold air from the back could
be affecting readings.
Use foam to isolate probe from
cold air if that is the problem.
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