I need to bench test a Balboa control board that won't energize the heat relays(s). Can the two sensor terminals be unconnected from the board or do I need to short each one to fool the board into energizing the relays. Or do I short them with a resistor. I don't get 240 V across the heater, no codes, and the panel shows heater on. Wiring is fine. I don't want to spend $500+ for a new board if it's a $2 relay.
Do these sensors go bad often? Was using the hot tub a lot but then after a freeze (it went into freeze mode and ran for 3 days) it gives SNS code. I swapped the wires and reset it. Then swapped one sensor and then the other sensor with sensors from my other hot tub (it’s not plugged in, but was working 4 months ago. Could the cold temps mess up all 4 sensors? Is there a test kit that I can install in place of the sensor that just sets the resistance to ensure it’s the sensor and not bad control board?
My hot tub is set at 102 but it's heating to 108. Do you think its a sensor or something else? Should I replace one or both sensors? No error codes. No GFI problems
Hi, this is what I have….i use a salt water hot tub so need a titanium system. I know you can get the titanium element but was wondering if you can get the whole heat exchanger made out of titanium? Plus I’m looking for a 1 1/2 hp titanium pump? 220V
The only titanium item is the element the tube is stainless steel.. There is no such thing as a titanium pump.. Salt is a bad idea in a hot tub in my opinion.. They are not designed for salt use..
I have the 3KW M7 heater & am getting OHH/OHS. When the water cools it does start to heat up again. I have ran it without the filters so know it is not a flow issue. I have the temp set to 38C/100F. I did catch a temp reading of 43C/109F before it cut out. do you think it will be these sensors on the heater unit. Had the tub since 2006 & still running well. Thanks.
@@SpaGuy my tub keeps OHH and I'm going to put 2 new high low temp sensors in and see if that fix my OHH problem, if not what else can I try. I have good water flow, filter is new. When it OHH the water seem to be around 98, but never really checked with a real thermometer. I checked the old sensors with the new sensors for ohms and they all read about the same ohms. So I'm thinking it's not the sensors. Any ideas. It's a Coleman MAAx spa 2004 year
@spa guy - Great video! So my hot tub is heating up to temperature fine - meaning if the water is 80 it’ll heat to 103 without an issue. My issue comes with maintaining the temperature. It’ll hold it for a day or so, then it stops heating and drops back down after an error message saying the heater it’s too hot. Thoughts? Swap the sensors? Thanks in advance!!!🎉
@@SpaGuy thanks for the quick response! I’m not sure what F to refers to, but I run to filter cycles a day, one for two hours and one for three hours. I’ve had the spa since 2016 and never had an issue until now. Does that change the guidance at all? Thank you again so much for taking the time to respond.
Most Balboa systems are not set for 2 different filter cycles usually one.. If you do not have one set higher that 2-3 I recommend 2 then you may have a situation where your pump is quitting intermittently or a heater relay is sticking intermittently..
Good evening Spa guy. I have the most sensors in my balboa heater in my spa. It appears that the temperature on my display is 6 degrees higher than the actual temperature. Any ideas? Thank you in advance for your help.
I changed both sensors today and still have the SN error code. The heater light does not come on either. Any ideas? Do I need to replace the heater? The strange thing is that it will heat even without the light coming on if i turn the jets on. It just wont maintain the temperature.
@@SpaGuy Can you provide me a link to what I need to purchase and I can buy it from your site. Thank you so much for your assistance and the awesome videos.
You determine which by changing the left one if that doesn't solve it you out the one you took out in the right side if that doesn't work it is probably a bad board..
@@SpaGuy actually found a handy chart for ohm vs sensor temperature and determined which is bad. One read 23 ohms at 48 degrees water temp while the other read 69 ohms (69 ohms being the faulty one )
I'm almost certain I have the same heater tube. The issue I'm having is that my tub keeps heating even when I turn it way down to 80 or 90, on sleep mode or economy mode. I guessing it's the heat sensors (which I have 2, like your video). I've not gotten any error codes though. Is my assumption correct? Thoughts? Thanks so much, and great video!!!
If it is 95 outside the water will be 95 no matter what you do.. It is a hot tub nit a cool tub.. When it cools off outside and the temp goes down then you will know..
@@SpaGuyHello, I have a OHH error message today on Balboa 2006. Pump works but stops, since it thinks OHH. Could it be one or 2 sensors to replace or motherboard? How can I easily test?
Hi , I have a balboa gs series and it is heating very slowly , 1 to 2 degrees per day. There is no voltage on the heater element teminals but it still seems to be heating slowly. I have checked the element and it has 29 ohm resistance. All the jets seem to be flowing ok. Any ideas of what the problem could be. Thanks, Anthony.
It could be a damaged Heater connector, Relay cold solder joint etc.. I have a video about the Balboa system not heating but none on the GS system specifically.
I don't have the 36" but do have longer versions on my site.. hottubpartsofamerica.com/spa-hot-tub-heater-m7-sensor-hydro-quip-replacement-temp-hi-limit-46/
Help Spa Guy, I have one of these heaters and keep getting a LF code. I replaced the heating element and the filter with a brand new one. The heater light turns on. But the pump or pumps dont kick on! I checked the suction filters in the tub where you sit and they are clear. When I push the jets on manually everything works fine, all the jets work and the heater light is on.. But after a few minutes, it goes back to the LF error and won't start until the jets button is manually started. Would the temp sensors have anything to do with this? Or is it that possible a relay for the circulating pump is bad and not telling the Hot Tub to kick on? If it is a relay do you have a link to one of your videos stating on how to determine this? Thanks David
I had similar type issue with LF trip outs. This seemed to help: (1) turn off spa, (2) remove side panel, (3) Locate control pack (black box), (4) loosen two screws at top and open door, (5) Turn dip switch #12 to ON (up) position, (6) turn power to spa ON, (7) when Pr appears on display turn power to spa OFF, (8) Turn switch #12 to OFF (down) position, (9) turn power to spa back on. I think this does a little re-boot of the control system. Good Luck.
Hi I changed the heater resistance in a Spa, and when I restart it, I can read error message: snsr balance. I tried to disconnect sensors, turn on, turn off, reconnect sensor and nothing change. I watched your video. Do you think the M7 sensor is to replace ?¿?¿ Why just when I changed the resistance ?¿?¿ Thanks for your help Best regards Arnaud
If I can help somebody: I let the spa functioning all night with the error message (snsr balance) When I came back the day after, the message disappeared and the Spa was at 37ºC. Don't change the sensor immediately ;-)
i drained the hot tub and have it refilled. I have a code of 70 degree SENSOR BALANCE. the heater won't go on. I waited for a long period with jets running, but it won't go away. I unplugged and replugged the sensors to the main control board and have switched the sensors on the heater with each other. I still get the sensor balance error message. Do I need to replace 1 or both sensors? Thanks!
Thanks for this video. Very informative. Question...when do you need to change the sensor instead of replacing the whole thing? My problem is that my spa is stock to a temperature of 95 even though I put it at 100. Could it be only the sensors ? Thanks a lot ! A.
Most likely it is the topside (buttons) causing that.. Unplug the topside form the board and power down and back up and see what it heats to then.. Should be 100..
@@SpaGuy Just did it. I'll wait f30 minutes it there is any change. However, yesterday night it was at 95...now it seems that it goes down..It is at 91....
Not all systems trip at 109.. If it is a Balboa system check your filter cycles.. If it is set higher than F2 when it is hot outside that will overheat the tub.. Thanks, Spa Guy
My hot tub is a cedar hot tub, so salt water is not a problem. But you are right….there is no pump that is designed for ocean water…I’m ok replacing my pump every 12 months for the chemical free, clean ocean water.
My gfci breaker trips about 15 seconds after resetting and hot tub does not start. If I unplug the sensors, then reset the breaker, then plug sensors back in, the hot tub will start up but trips the breaker after a few seconds. Would this indicate the heater is faulty or a sensor is faulty?
Mine had an inchworm that crawled in and bridged the heater element to the grounded casing at the heater terminal. Couldn't get it clean enough to not have electrical leakage so I replaced the heater element.
Priming: run the pumps or whatever you need to get the air out and have good water circulation before it turns the heater on. You don't want the heater to turn on without water carrying the heat away.
I have one of these heaters and keep getting a dy code. When I push the jets button, everything works fine, all the jets work, and the heater works. But after a few hours, it goes back to the dy error and won't start until the jets button is manually started. Are the sensors bad? Thanks
I need to bench test a Balboa control board that won't energize the heat relays(s). Can the two sensor terminals be unconnected from the board or do I need to short each one to fool the board into energizing the relays. Or do I short them with a resistor. I don't get 240 V across the heater, no codes, and the panel shows heater on. Wiring is fine. I don't want to spend $500+ for a new board if it's a $2 relay.
Do these sensors go bad often? Was using the hot tub a lot but then after a freeze (it went into freeze mode and ran for 3 days) it gives SNS code. I swapped the wires and reset it. Then swapped one sensor and then the other sensor with sensors from my other hot tub (it’s not plugged in, but was working 4 months ago.
Could the cold temps mess up all 4 sensors? Is there a test kit that I can install in place of the sensor that just sets the resistance to ensure it’s the sensor and not bad control board?
My hot tub is this M7 balboa and I get no code but it will not heat up past 85 degrees. Could sensors be causing that?
My hot tub is set at 102 but it's heating to 108. Do you think its a sensor or something else? Should I replace one or both sensors? No error codes. No GFI problems
It is hot outside and if you have the filter cycle set too high then it will over heat.. Check your filter cycles.. Should be F2 at the most..
Hi spa guy is the a way to test the 2 temp sensors
Is this valve have a location on diagram or just trace it off of heater? Sorry I dont work on spas... and i am subscribing to your channel
Hi, this is what I have….i use a salt water hot tub so need a titanium system. I know you can get the titanium element but was wondering if you can get the whole heat exchanger made out of titanium?
Plus I’m looking for a 1 1/2 hp titanium pump? 220V
The only titanium item is the element the tube is stainless steel.. There is no such thing as a titanium pump.. Salt is a bad idea in a hot tub in my opinion.. They are not designed for salt use..
I have the 3KW M7 heater & am getting OHH/OHS. When the water cools it does start to heat up again. I have ran it without the filters so know it is not a flow issue. I have the temp set to 38C/100F. I did catch a temp reading of 43C/109F before it cut out. do you think it will be these sensors on the heater unit. Had the tub since 2006 & still running well. Thanks.
Did you manage to fix the problem? I have the same year spa and OHH message too! Thanks
Which sensor plugs in to sensor A and which one plugs into sensor B on the board?
A left B right
@@SpaGuy my tub keeps OHH and I'm going to put 2 new high low temp sensors in and see if that fix my OHH problem, if not what else can I try. I have good water flow, filter is new. When it OHH the water seem to be around 98, but never really checked with a real thermometer. I checked the old sensors with the new sensors for ohms and they all read about the same ohms. So I'm thinking it's not the sensors. Any ideas. It's a Coleman MAAx spa 2004 year
Just replace both of my pumps and some of the PVC, put my spot and 95 and goes to 106, what do you think my problem is
@spa guy - Great video! So my hot tub is heating up to temperature fine - meaning if the water is 80 it’ll heat to 103 without an issue. My issue comes with maintaining the temperature. It’ll hold it for a day or so, then it stops heating and drops back down after an error message saying the heater it’s too hot. Thoughts? Swap the sensors? Thanks in advance!!!🎉
Most likely it is the filter cycle set too high adjust it to F2..
@@SpaGuy thanks for the quick response! I’m not sure what F to refers to, but I run to filter cycles a day, one for two hours and one for three hours. I’ve had the spa since 2016 and never had an issue until now. Does that change the guidance at all? Thank you again so much for taking the time to respond.
Most Balboa systems are not set for 2 different filter cycles usually one.. If you do not have one set higher that 2-3 I recommend 2 then you may have a situation where your pump is quitting intermittently or a heater relay is sticking intermittently..
@@SpaGuy thanks. Should have did it’s a swim spa that was set for 3-4 hour cycles the last 6 years.
Also what is f2 filter setting?
Good evening Spa guy. I have the most sensors in my balboa heater in my spa. It appears that the temperature on my display is 6 degrees higher than the actual temperature. Any ideas? Thank you in advance for your help.
M7
I changed both sensors today and still have the SN error code. The heater light does not come on either. Any ideas? Do I need to replace the heater? The strange thing is that it will heat even without the light coming on if i turn the jets on. It just wont maintain the temperature.
If you changed both sensors and still have an SN code your board is bad..
@@SpaGuy Can you provide me a link to what I need to purchase and I can buy it from your site. Thank you so much for your assistance and the awesome videos.
@@tracinowell1125 need to know what kind of board.. You can text the board pics to 772-800-5445 and my people will help you find the correct board..
My balboa is showing a sns or 5n5
How do you determine which sensor is bad by ohming
You determine which by changing the left one if that doesn't solve it you out the one you took out in the right side if that doesn't work it is probably a bad board..
@@SpaGuy actually found a handy chart for ohm vs sensor temperature and determined which is bad. One read 23 ohms at 48 degrees water temp while the other read 69 ohms (69 ohms being the faulty one )
@@bhan9637 my experience has been that type testing is not reliable but let me know..
Will do ordered the sensor tonight. I’ll shoot you an update when replaced thanks for the replies.
I'm almost certain I have the same heater tube. The issue I'm having is that my tub keeps heating even when I turn it way down to 80 or 90, on sleep mode or economy mode. I guessing it's the heat sensors (which I have 2, like your video). I've not gotten any error codes though. Is my assumption correct? Thoughts? Thanks so much, and great video!!!
If it is 95 outside the water will be 95 no matter what you do.. It is a hot tub nit a cool tub.. When it cools off outside and the temp goes down then you will know..
@@SpaGuyHello, I have a OHH error message today on Balboa 2006. Pump works but stops, since it thinks OHH. Could it be one or 2 sensors to replace or motherboard? How can I easily test?
Can I add a 1K Ohm resistor to each of these sensors in series to increase the max temperature from 104 to 109F?
I have no idea and I am not interested in creating dangerous hot tub situations..
Are you making 500 gallons of soup?
Look up information about scalding and burns. You are getting to a temperature that will start cooking human tissue.
Hi ,
I have a balboa gs series and it is heating very slowly , 1 to 2 degrees per day. There is no voltage on the heater element teminals but it still seems to be heating slowly. I have checked the element and it has 29 ohm resistance.
All the jets seem to be flowing ok.
Any ideas of what the problem could be.
Thanks,
Anthony.
It could be a damaged Heater connector, Relay cold solder joint etc.. I have a video about the Balboa system not heating but none on the GS system specifically.
Thanks, appreciate it. I have seen that video . I will endeavour to pull it apart and have a look. There are no codes coming up at all.
Couldn't see any cold solder points on the circuit board .
Do you think it could be the sensors?
If so do you have them with a 36 inch cable?
Thanks.
my board has a slot for sensor A and B. which is which? thanks
I need to buy the sensors for my tub, but can't find the replacements. The 2 I have in now are Balboa : 25283 (36" or 90 cm)
I don't have the 36" but do have longer versions on my site.. hottubpartsofamerica.com/spa-hot-tub-heater-m7-sensor-hydro-quip-replacement-temp-hi-limit-46/
Help Spa Guy,
I have one of these heaters and keep getting a LF code. I replaced the heating element and the filter with a brand new one. The heater light turns on. But the pump or pumps dont kick on! I checked the suction filters in the tub where you sit and they are clear. When I push the jets on manually everything works fine, all the jets work and the heater light is on.. But after a few minutes, it goes back to the LF error and won't start until the jets button is manually started. Would the temp sensors have anything to do with this? Or is it that possible a relay for the circulating pump is bad and not telling the Hot Tub to kick on? If it is a relay do you have a link to one of your videos stating on how to determine this?
Thanks David
I had similar type issue with LF trip outs. This seemed to help: (1) turn off spa, (2) remove side panel, (3) Locate control pack (black box), (4) loosen two screws at top and open door, (5) Turn dip switch #12 to ON (up) position, (6) turn power to spa ON, (7) when Pr appears on display turn power to spa OFF, (8) Turn switch #12 to OFF (down) position, (9) turn power to spa back on. I think this does a little re-boot of the control system. Good Luck.
Hi
I changed the heater resistance in a Spa, and when I restart it, I can read error message: snsr balance.
I tried to disconnect sensors, turn on, turn off, reconnect sensor and nothing change.
I watched your video. Do you think the M7 sensor is to replace ?¿?¿
Why just when I changed the resistance ?¿?¿
Thanks for your help
Best regards
Arnaud
If I can help somebody:
I let the spa functioning all night with the error message (snsr balance)
When I came back the day after, the message disappeared and the Spa was at 37ºC.
Don't change the sensor immediately ;-)
i drained the hot tub and have it refilled. I have a code of 70 degree SENSOR BALANCE. the heater won't go on. I waited for a long period with jets running, but it won't go away. I unplugged and replugged the sensors to the main control board and have switched the sensors on the heater with each other. I still get the sensor balance error message. Do I need to replace 1 or both sensors? Thanks!
Hi ... i have the same problem... do you fix this probleme and do you know what cause this ?
Thanks for this video. Very informative. Question...when do you need to change the sensor instead of replacing the whole thing? My problem is that my spa is stock to a temperature of 95 even though I put it at 100. Could it be only the sensors ? Thanks a lot ! A.
Most likely it is the topside (buttons) causing that.. Unplug the topside form the board and power down and back up and see what it heats to then.. Should be 100..
@@SpaGuy Ok. Thx. But not clear for me..the top side ? It is a button ? You mean the LED panel where you can see the temperature and other functions?
Yes the topside control..
@@SpaGuy Just did it. I'll wait f30 minutes it there is any change. However, yesterday night it was at 95...now it seems that it goes down..It is at 91....
OK. Well. After 1 hour almost that I unpluged the topside it is still at 91. Did not move...could it be a fuse? Thx
What kind of sensor are they? PT1000 or NTC30k?
Says right in the title.. Balboa M7..
Will a heater relay keep my pump from powering on
It will not..
I keep getting sns code. What should I do for that?
Do you have to drain spa to replace?
Most tubs has slice valves that you can close to change parts like this without draining the water..
Where do we connect the other end of the wire?
Just replace where you removed the old one.
My Spa is at 109 degrees and both HH and OH are not showing up are my sensors bad?
Not all systems trip at 109.. If it is a Balboa system check your filter cycles.. If it is set higher than F2 when it is hot outside that will overheat the tub.. Thanks, Spa Guy
My hot tub is a cedar hot tub, so salt water is not a problem. But you are right….there is no pump that is designed for ocean water…I’m ok replacing my pump every 12 months for the chemical free, clean ocean water.
My gfci breaker trips about 15 seconds after resetting and hot tub does not start. If I unplug the sensors, then reset the breaker, then plug sensors back in, the hot tub will start up but trips the breaker after a few seconds. Would this indicate the heater is faulty or a sensor is faulty?
Heater element shorted. Thats what it was with mine.
Mine had an inchworm that crawled in and bridged the heater element to the grounded casing at the heater terminal. Couldn't get it clean enough to not have electrical leakage so I replaced the heater element.
What pr means?
Prime
Priming: run the pumps or whatever you need to get the air out and have good water circulation before it turns the heater on. You don't want the heater to turn on without water carrying the heat away.
my hot tub is throwing a Sb code
Probably a bad m7 sensor.. hottubpartsofamerica.com/sensor-balboa-m7-12-temp-hi-limit-1-4-2-pin/
I have one of these heaters and keep getting a dy code. When I push the jets button, everything works fine, all the jets work, and the heater works. But after a few hours, it goes back to the dy error and won't start until the jets button is manually started. Are the sensors bad? Thanks
you ever find a solution?