Jandy JXI not heating

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pigskintd

pigskintd

Well-known member
Jul 7, 2020
97
Central Florida
Pool Size
9800
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Jandy Aquapure 1400
My JXI is 6 months old and just this weekend it won't heat the pool. I get a check flow error message even when on 3,000 rpm. What is odd is that the spa still heats and works just fine. Any idea what could be going on?

Moved from here.
 
Last edited by a moderator:
When did you last clean your filter?

What is your filter PSI?

Check all of your valves for proper setting.

Post pics of your equipment pad.
 
ajw22 said:
When did you last clean your filter?

What is your filter PSI?

Check all of your valves for proper setting.

Post pics of your equipment pad.
Click to expand...
My pool guy (that was included free for 6 months cleans it. He finally won't be touching our pool even though all he did was vacuum and add acid) cleans the filter, but I will check the PSI when I get home.

I will check the values when I get home.

Isn't it strange that it works for the spa but not the pool?
 

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pigskintd said:
Isn't it strange that it works for the spa but not the pool?
Click to expand...

No, it is not strange. Your pool have a different plumbing system then your spa and one can have adequate flow for the JXI heater while the other does not.

You have the typical too small Florida cartridge filter that is very easy to get clogged. Any algae problem in your water can clog the filter and slow the flow.

Post your water chemistry from your TF100 in the format...

FC
CC
pH
TA
CH
CYA
SALT
WATER TEMP
CSI

Do a Overnight Chlorine Loss Test
 
pigskintd said:
My JXI is 6 months old and just this weekend it won't heat the pool. I get a check flow error message even when on 3,000 rpm. What is odd is that the spa still heats and works just fine. Any idea what could be going on?

Moved from here.
Click to expand...
Hi there, in my case it was my cartridge filters. While they looked clean and I took good care of them, once I replaced them I had proper water flow.
 
ajw22 said:
No, it is not strange. Your pool have a different plumbing system then your spa and one can have adequate flow for the JXI heater while the other does not.

You have the typical too small Florida cartridge filter that is very easy to get clogged. Any algae problem in your water can clog the filter and slow the flow.

Post your water chemistry from your TF100 in the format...

FC
CC
pH
TA
CH
CYA
SALT
WATER TEMP
CSI

Do a Overnight Chlorine Loss Test
Click to expand...
I will get a full chem check when I get home. My pool/spa is only 9,800 gallons, is the CS 200 still smaller than I should have?
 
pigskintd said:
My pool/spa is only 9,800 gallons, is the CS 200 still smaller than I should have?
Click to expand...

Yes, it is smaller then we recommend.

The larger a filter the less often it needs cleaning. Your filter is a Pool Service Companies dream.
 
ajw22 said:
Yes, it is smaller then we recommend.

The larger a filter the less often it needs cleaning. Your filter is a Pool Service Companies dream.
Click to expand...
I am so glad the pool company free service has ended. I was always afraid he would mess something up. I feel good about my chemistry as he only ever added some salt and acid each time. I will eventually get a larger filter, but not in the cards at the moment.
 
pigskintd said:
My JXI is 6 months old and just this weekend it won't heat the pool. I get a check flow error message even when on 3,000 rpm. What is odd is that the spa still heats and works just fine. Any idea what could be going on?

Moved from here.
Click to expand...
Is there a temperature set for the "pool" heater in the RS? Is "pool heat" enabled in the RS?
As there is actually less flow when the spa jets are running, flow shouldn't be the issue unless the heater is bypassed. Hard to tell from the picture (before install completed?), but there appears to be a heater bypass plumbed. Defeats the purpose of automation if you have to manually open it to run the heater for the pool.
 

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ekadd said:
Hi there, in my case it was my cartridge filters. While they looked clean and I took good care of them, once I replaced them I had proper water flow.
Click to expand...
Just an update! The free 6 month pool service (that I definitely didn't renew) said they were cleaning all filters...they were not! The filter was so dirty from not being cleaned for 6 months. I was dumb to not check to confirm. Anyways, I gave the filter a good clean and the pool heater is working just fine! I appreciate the suggestion, pool party was saved!
 
1poolman1 said:
Is there a temperature set for the "pool" heater in the RS? Is "pool heat" enabled in the RS?
As there is actually less flow when the spa jets are running, flow shouldn't be the issue unless the heater is bypassed. Hard to tell from the picture (before install completed?), but there appears to be a heater bypass plumbed. Defeats the purpose of automation if you have to manually open it to run the heater for the pool.
Click to expand...
I am a novice when it comes to these things, but I don't have to do anything manually to heat the pool or hot tub. I the heater was working fine and just stopped. The issue was the pool service (which was included and I am not renewing) wasn't cleaning the cartridge filter. Everything is working now!
 
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