Q: I have an 8 year old Balboa 2000 model WH-SW100-CCAH the board has BORRD SW100 SOUTHWST VALU PAK sticker on it. I have two controllers and two two-speed motors. I disconnected the tub for two weeks for a long vacation. When I hooked the tub back up -- nothing. All fuses and circuit breakers are good and the voltage at the board is good. The system has been flashing OH (overheat) for the last couple months and I had to power cycle to get it to recover. I'm thinking it's a board failure. I'm also guessing the 2000 Value board is the replacement. Can you confirm this before I purchase the board? Is there anything I can check to ensure the board is the problem? Also the unit price for the Balboa 2000 replacement was not listed. Is it better just to replace the whole thing versus just the board? How long can I expect the heater to last?
A: Overheating is more likely a sensor issue than a board issue, I would start by checking out my sensors. There is a high limit sensor and a temperature sensor. To test you can simply remove them from the board and put an ohm meter on them. They should be reading close to the same resistance, if they are far apart and are sensing the same temperature then one of them is defective.
There are two types of sensors you are likely to have, one is where there is a sensor in the spa wall and another strapped to the outside of the heater. The other would be an identical sensor at each end of the heater tub.
If you have the first arrangement you need this one:
Balboa Temperature Sensor/Hi Limit Assembly, Standard
If you have the two identical sensors you need this one:
Balboa Temp/Hi Limit Sensor Assembly
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Q: Thanks for your quick response. Found both sensors and the both are closed with the same resistance. Also now the tub won't power up. The indicator on the panel is not lighting up and the tub pumps don't cycle on power up. This looks bad. On a side note the utility power here in Watkins Co is not good. We have multiple outages in the last year to include a couple of brown outs. In fact we had a brown out last night. Is there anything else I could check?
A: It sounds like you do in fact have a bad board. The can have voltage regulation problems and cause your overheating troubles but it is unusual. So we should get back to talking about a board.
Balboa makes a number of boards off the same stock. It will be essential to get a chip number off the main program chip top make sure you get the correct one. There is a program number on one of the main chips on the board. If you get me that number I will guide you to the correct board. I attached an example of the number I need to this email.
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Q: Thanks for the example... The number on the chip is SW100R1A. Also before I order just the board -- is it worth it to replace the whole unit? And what the price difference?
A: This is the board you need:
2000 Value board (non M7 technology)
It is not exactly like the original version of the board. If you have two speed second pump the new boards will only operate your second pump on high speed. That unit currently runs $286.37.
Which new unit we would consider would depend on what equipment you have to operate. If you have a 2 speed pump & light only you need this one:
VS-500Z Spa Control System
If you have a two speed pump plus a second pump OR an air blower - you need this one:
VS-501Z Spa Control System
If you have a two speed pump plus a second pump AND an air blower - you need this one:
Balboa VS 510Z Spa Control System
Hope this helps
Dave - aqua-man.com email: info@aqua-man.com
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Q: Dave sorry I called you on your cell -- I was down to the last two wires.... But my hot tub is up and operation. All functions work. Thank you very much for your expertise.
A: It is no trouble, glad we could get you up and running.
Dave - aqua-man.com email: info@aqua-man.com
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Q: Now wouldn't you know it.... The secondary pump is intermittent. I hear a loud hum or growl then I hear a click coming from the motor. As I hit the button I can hear the solenoid on the board click each time. I'm thinking it's the overheat or overload relay on the pump. It does work from time to time with no problem or funny noises. So any suggestions. Gosh I hate to be a pain.
A: You sound like you have a start problem on the motor, or we are feeding it
the wrong voltage.
Is your second pump 110 volt or 220 volt. And if you put a meter on the two
leads feeding it at the same time, what voltage is going to it?
Dave - aqua-man.com email: info@aqua-man.com