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Posted

Hi,

I'm new to the forum, however here goes my first try at it.

My system comes beeps comes up code 120.

Voltage check on boards seem okay ... except when cell is on normal it reads 35V.

When it is on reverse it is 25V.

DC ma reading is .50 on both board as uposed to the 120 when @ 35v normal on.

When reversing and 25v 120ma back board 115ma front board.

What is wrong thought it was the cell but I think not now.

Either front or rear board. Logic tells me front board, any one know?

thanks,

no green, please!

add on .... just tested when reversing 25v at outlet and sysem is producing clorine.

Posted

Hi,

I'm new to the forum, however here goes my first try at it.

My system comes beeps comes up code 120.

Voltage check on boards seem okay ... except when cell is on normal it reads 35V.

When it is on reverse it is 25V.

DC ma reading is .50 on both board as uposed to the 120 when @ 35v normal on.

When reversing and 25v 120ma back board 115ma front board.

What is wrong thought it was the cell but I think not now.

Either front or rear board. Logic tells me front board, any one know?

thanks,

no green, please!

add on .... just tested when reversing 25v at outlet and sysem is producing clorine.

Posted

Thanks, Pool Clown

Cell is 4 years old on 5th but only used for 4 - 5 months a year.

Salt is at 3.2 with the front board reading 2.8.

I put it back to 2.8 was reading 2.6 after setting according to dealer.

At 2.6 was reading 2.9 - 3.0

Maybe I should try more salt?

Will the lack of salinity effect the voltage regardless of what the control unit is set at and what it says the salt reading is? And only on normal flow and not reverse?

Could add enough salt to read 3.5 (factory 2.8 setting) which would be 3.2 - 3.3 with dealer suggested setting. Rather not put too much and have to drain and fill.

.............

July 9 9:00 am

Added salt last evening now 3.4... Voltage still 35 normal flow.

July 9 12:30 pm

Unit in reverse flow reading 25 volts at backboard out to cell cable and 25 at cell.

Reversed + - output to cell on backboard while unit still on.

Voltage went up to 35 volt (as it was now running the cell in normal flow config.)

putting the output back to proper connection on board dropped volts to 25 again.

  • 2 weeks later...
Posted

I am also new to the forum and new to pool ownership. I am reading the same measurements with a code 121 as well. I cleaned the cell and the service light went out for an hour or so then came back on. Salt level is 3.0, pool temp 92, cell is 4 years old. One item of interest is that all summer last year and up until now, the cell has remained clean. When I removed it to check it today, there was moderate scale build up for the first time since I have owned the property (1 yr).

I guess I am asking for assurance before I spend $500 on a new cell. I have the troubleshooting manual from Jandy. measurements are simular to nogreen's. Thank you

Posted

70% has been keeping me around 4-5 ppm (13,500 gal) for the summer (lots of kids in the pool). I noticed that my chlorine has been dropping for the last few days and then the service light came on (code 121). It seems to be dropping about a 1 a day for the last 2-3 days. I'm off to Walmart to pick up some back up cnlorine tablets now because I am getting close to 1ppm. Even at the high level I have been keeping it at, I still don't ever taste or smell the chlorine. This is the first time I have ever seen the service light w/code before.

Posted

Lots of kids in the pool all the time I meant not just lately.

I just went out and checked the panel. The service light has went out again. Not sure what is causing the code 121 to cycle on and off. Hasn't happen before. Chlorine levels have been dropping of for the last couple of days. No changes to settings or pump times. Weather has been consistant with water temp in the low 90's. Complete water test is done twice monthly for hardness, stabilizer, etc. No major rains.

Posted

Lots of kids in the pool all the time I meant not just lately.

I just went out and checked the panel. The service light has went out again. Not sure what is causing the code 121 to cycle on and off. Hasn't happen before. Chlorine levels have been dropping of for the last couple of days. No changes to settings or pump times. Weather has been consistant with water temp in the low 90's. Complete water test is done twice monthly for hardness, stabilizer, etc. No major rains.

Posted

Hey Bryon,

I'd check the voltage at the cell. Should be between 22-30V

My experience went..

I was getting 120 or fault normal flow.

When in this mode I was up to 45v.

When in reverse mode I had 25v.

Eventually I received the 123.

Old cell looks like new but apparently the thin plating of rodium or what ever is gone!

New cell @ $700. plus new piping fixed problem! I had old style cell.

....Pool Clown

It appears the life of the cell is not determined by hrs of use as much as time.

I use mine for 4-5 months a year and down south they are probably never removed and they apparently last the same 3-5 years.

Is it possible that the coating is deteriorating while it sits in my bacement for 7 months?

Other than a normal rinse with clear water is there something to slow deterioration?

Interestingly, when I was re piping my new style cell a bit of pool(salt) water splashed into it when I held it between the pipes where the old cell had been. Immediately there was an acidic gas that come out of the new cell from the water splashing the plates. Obviously a reaction from pool water and the coating on the plates. Hence my thought the clock is ticking once the cell gets into is wet, and there may be a way to slow when out of the pool.

Posted

....Pool Clown

It appears the life of the cell is not determined by hrs of use as much as time.

I use mine for 4-5 months a year and down south they are probably never removed and they apparently last the same 3-5 years.

Is it possible that the coating is deteriorating while it sits in my bacement for 7 months?

Other than a normal rinse with clear water is there something to slow deterioration?

Interestingly, when I was re piping my new style cell a bit of pool(salt) water splashed into it when I held it between the pipes where the old cell had been. Immediately there was an acidic gas that come out of the new cell from the water splashing the plates. Obviously a reaction from pool water and the coating on the plates. Hence my thought the clock is ticking once the cell gets into is wet, and there may be a way to slow when out of the pool.

what % do you run yours at? And how long does the pump run every day (for the 4 to 5 months that you use it)?

Please note that running the unit at a higher percent,and 8 hours pump run time, uses up more "life" of the cell than if you ran it at lower percent for the same 8 hour run time. So if you are running high percent with high(pump)run times, death will occur sooner to the cell. The cell does not "wear" while its on the shelf. As long as you don't store chems on the shelf with it. I believe the cell life is like 10,000 hrs. That number could be wrong.

I Don't remember.

I don't pour over manuals to remember those kinds of specs. i just try and repair these things.

Posted

Hello Pool Clown, awesome posts and great information. Thank you for all your posts.

I have a common issue with a Aqua Pure 1400 that seems to be the obvious flow sensor issue but my pool guy replaced the flow sensor and I still have the same issue. This is what is going on:

I have a Aqua Pure 1400, it is 4 years old and has worked perfect for the last 4 years. Recently it stopped producing Chlorine and I noticed that the flow indicator does not light up. When the Jandy main service panel is in the service mode instead of the auto mode, the service codes come up of 172 and 186. The pool guy saw all this and he installs lots of Aquapure 1400's, so he said it was a bad flow sensor. However, he replaced the flow sensor and it still has the same problem. So he told me that its probably the front board. After spending $250 to replace the flow sensor, I really didn't want to spend another $350 and still have the same problem. So I went online to do some research and found this wonderful site.

I downloaded the trouble shooting guide for the AquaPure that you posted. Thanks so much, it's great information.

When I check the front board, I get the following results:

Pool temperature reads 73, not 71. H Temp reads 89 not 91. and salinity reads 3.0, not 2.8.

Because these readings are very close, does it still mean the front board is bad?

I did the current test on the front board and it only reads .8 millivolts, not 120 as per the trouble shooting guide.

The AC electrical test gave the proper result of 21 VAC on test points A and C.

Thank you so much,

Joe

PS. All chemicals of the pool have been checked, pump working great, filter, etc.

Posted

What is the salt level in the pool? Take a water sample to your pool store and have them check it (not with test strips). Please post that reading, and the reading the unit is giving you.

Posted

What is the salt level in the pool? Take a water sample to your pool store and have them check it (not with test strips). Please post that reading, and the reading the unit is giving you.

Hi Pool Clown,

Thank you so much for your fast response.

The salt level shows 3.2 on the control unit and I also took it to Leslie's and they verified it.

My pool guy is stumped as well. He tried the new flow sensor and it didnt help. He assumed it was the front board but after testing the motherboard as per the manual, it seems to check out. I called Zodiac and they confirmed that the numbers I got from the test were ok.

Thanks,

Joe

Posted

He tried the new flow sensor and it didnt help. Did it work for a day and then quit? Or it never worked? He assumed it was the front board but after testing the motherboard Did you mean the front board? as per the manual, it seems to check out. I called Zodiac and they confirmed that the numbers I got from the test were ok.

Thanks,

Joe

Posted

He tried the new flow sensor and it didnt help. Did it work for a day and then quit? Or it never worked? He assumed it was the front board but after testing the motherboard Did you mean the front board? as per the manual, it seems to check out. I called Zodiac and they confirmed that the numbers I got from the test were ok.

Thanks,

Joe

Hello Pool Clown, thank you for being so helpful to everyone.

I'm sorry for the delayed reply but for some reason I did not get an email informing me of a reply, however, i did get one on your first post. So not sure what happened.

Anyway, he said that it did not change anything immediately when he installed it. It never worked. So he took it out and put back the old one. He thought for sure it was the sensor. Maybe the new sensor was defective? I guess it's possible.

Sorry, I meant to say front board. I guess I'm working on computers too much here at work. I emailed Zodiac again and I asked them given the situation, what they thought could be wrong. They said if we replaced the flow sensor and i still get no flow that it must be the front board. Strange that the front board passed the diagnostic tests. Anyway, the pool guy is going to come back and try another flow sensor just to make sure.

Thanks again for all the help, I'll update you next week after he tries another flow sensor.

Joe

Posted

....Pool Clown

It appears the life of the cell is not determined by hrs of use as much as time.

I use mine for 4-5 months a year and down south they are probably never removed and they apparently last the same 3-5 years.

Is it possible that the coating is deteriorating while it sits in my bacement for 7 months?

Other than a normal rinse with clear water is there something to slow deterioration?

Interestingly, when I was re piping my new style cell a bit of pool(salt) water splashed into it when I held it between the pipes where the old cell had been. Immediately there was an acidic gas that come out of the new cell from the water splashing the plates. Obviously a reaction from pool water and the coating on the plates. Hence my thought the clock is ticking once the cell gets into is wet, and there may be a way to slow when out of the pool.

what % do you run yours at? And how long does the pump run every day (for the 4 to 5 months that you use it)?

Please note that running the unit at a higher percent,and 8 hours pump run time, uses up more "life" of the cell than if you ran it at lower percent for the same 8 hour run time. So if you are running high percent with high(pump)run times, death will occur sooner to the cell. The cell does not "wear" while its on the shelf. As long as you don't store chems on the shelf with it. I believe the cell life is like 10,000 hrs. That number could be wrong.

I Don't remember.

I don't pour over manuals to remember those kinds of specs. i just try and repair these things.

Posted

....Pool Clown

It appears the life of the cell is not determined by hrs of use as much as time.

I use mine for 4-5 months a year and down south they are probably never removed and they apparently last the same 3-5 years.

Is it possible that the coating is deteriorating while it sits in my bacement for 7 months?

Other than a normal rinse with clear water is there something to slow deterioration?

Interestingly, when I was re piping my new style cell a bit of pool(salt) water splashed into it when I held it between the pipes where the old cell had been. Immediately there was an acidic gas that come out of the new cell from the water splashing the plates. Obviously a reaction from pool water and the coating on the plates. Hence my thought the clock is ticking once the cell gets into is wet, and there may be a way to slow when out of the pool.

what % do you run yours at? And how long does the pump run every day (for the 4 to 5 months that you use it)?

Please note that running the unit at a higher percent,and 8 hours pump run time, uses up more "life" of the cell than if you ran it at lower percent for the same 8 hour run time. So if you are running high percent with high(pump)run times, death will occur sooner to the cell. The cell does not "wear" while its on the shelf. As long as you don't store chems on the shelf with it. I believe the cell life is like 10,000 hrs. That number could be wrong.

I Don't remember.

I don't pour over manuals to remember those kinds of specs. i just try and repair these things.

Posted

Hey Pool Clown,

Sorry for slow reply.

My old cell never ran over 40% and I never used it at 100% to shock.

I did add small amounts of salt though while running DOH! >>> wont do that again until settled for 24hrs.

Any other long life hints?

Running 25-30% for a 2.5 - 3.0 clorine level.

thanks,

Nogreen.....please!

Posted

Lots of kids in the pool all the time I meant not just lately.

I just went out and checked the panel. The service light has went out again. Not sure what is causing the code 121 to cycle on and off. Hasn't happen before. Chlorine levels have been dropping of for the last couple of days. No changes to settings or pump times. Weather has been consistant with water temp in the low 90's. Complete water test is done twice monthly for hardness, stabilizer, etc. No major rains.

I followed the troubleshooting guide. Everything is within tolerance except voltage to the cell (35vdc) while generating. I looked a little closer and realized that the service light was going out during the rest cycle. Once the cell was powered, code 121 would come back up. I ordered a new cell ($540.00). The replacement is designed a little differant than my original square one. From what I gather, I will need to replumb a section for the replacement one to fit. I'll let you know if all goes well.

Running chlorine tablets right now to avoid a green pool.

Posted

Hi folks,

Figured I'd jump on the band wagon here with the same problem. My 1400 is 3.5 yrs old and has started to bounce from codes 120 and 121 recently. I just today did the muriatic acid cleaning which really didn't do anything cause the cell did not appear to be clogged or dirty at all.

I run my pump for 12 hrs. each day on a timer with the generator set at 50% for my 29000 gal pool.

Based on everything I've read here, it sounds like I'm looking at a new cell and since I have the old style square cell, it will involve some replumbing which is not a big deal.

My question is, can I continue to run the cell while getting the codes without damaging the control box? I probably won't replace the cell until next year and I plan to close the pool over

the labor day weekend this year. So I only have another five weeks of usage anyway.

You guys see any potential problems?

Thanks for any and all replies and thanks for a great forum!!

Posted

My question is, can I continue to run the cell while getting the codes without damaging the control box?

Yes. If conditions aren't right, the unit will shut itself off.

Posted

My question is, can I continue to run the cell while getting the codes without damaging the control box?

Yes. If conditions aren't right, the unit will shut itself off.

Thanks Pool Clown!!

Posted

Hi pool clown, I just had my Jandy 1400 installed a month ago. It has been working great until today. I was getting ready to use the spa so I turned the valve to stop pool water going to the spa, by mistake I turned the shut the water completely then the service light came on and error received 172 & 181. Do I need to clean the sensor?

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