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Hot tub not heating very fast

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seethatdotca:
Hi, this is my first post, hopefully I've followed the correct procedure to post. If it's in the wrong directory, please let me know.

Here's my problem. I live in Canada and at the end of last season (beginning of winter), I noticed the temperature of the hot tub dropping. It was due for a water change so instead of fixing the problem then, I decided to drain the water and wait until Spring. It's worth mentioning that I had changed the heater 1 or 2 years earlier... and I bought two titanium heaters at the time. Last weekend, I replaced the heater again (just in case), added water and turned it on. At first the hot tub was showing (IC) for ice because of the cold but after a few days it went up to 60 degrees. That's the temperature it's at now and I only gain about 1 degree every 12 hours or so. I removed the filter to rule that out as a possibility. I'm wondering what else could cause the heating issue. Would it be the circuit board? Any help is greatly appreciated before I call a technician to take a look at it. Thank you.

The hot tub brand is InnovaSpa, Urbania model, hooked up to a dedicated 110v outlet.

seethatdotca:
I verified the heater with my multimeter (ohm) and it looks fine. I tried to get a volt reading on the heater's power and didn't get anything. The control board shows it's heating so I suspect something is preventing the power to get through, probably a relay. I removed the circuit board and I can't find any burn marks or anything abnormal. I don't know what else to try, other than buying a new board.

CanadianSpaTech:
If you don't get power coming off the board when the heat indicator LED is solid and not just flickering the yes you likely have a bad relay. Relays can be replaced cheaper than a new board.

seethatdotca:
The relays on these boards do not just come out. They don't have any posts to jump them either. Are you suggesting soldering new relays on the board as a cheaper option? I wouldn't be comfortable doing that myself and I haven't heard of any technician willing to do that either. Who would I contact for that kind of service?

CanadianSpaTech:
There are repair options but you have to send and wait. I use a local electronics repair guy here in Ont. Canada. Phone around and you should be able to find someone local that repairs circuit boards. Are you sure it's a relay?

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