If a low flow heater is bad on a 2002 caldera martinique hot tub, could that cause the temperature to go down after a while?
Problem:
if I let my tub sit for any length of time it will lose temperature. I have it set at 102, but if I don’t use the tub for a couple days the temperature goes down to lower 90’s. What I have noticed is, if I go out in the mornings (every morning) and turn the jets on, and not touch it again until the same evening; the tub will stay at temp until I leave the tub alone for a couple days.
So when I noticed a temperature change about a month ago, in that time I have:
1. Replaced the filter with new (thought dirty filter)
2. Emptied the hot tub and refilled it with fresh water and chemicals (thought possible scale issue)
3. Ran it several time to get the air out of any part of the system (after draining complete)
4. Ran a cleaning cycle several times with a hot tub cleaner
5. Double checked that the limit switch light is steady green and the heater on light is steady red.
6. Double checked that the summer mode is NOT on
7. Locked the key pad to 102
8. Checked for proper voltage at the pins for the heater
9. Confirmed the circulation pump IS working
10. Checked the ohm reading on the heater (7k ohms)
i still to this day, am having the issue please help!!!
