There are a few things which must be checked to find out exactly how serious the problem is, and whether it is necessary to call a repairman. If the water isn't heating up but it is circulating, this means that there is a problem with the heating element. But if the water gets too hot, some simple steps will lower the temperature. The Filter CartridgeIf the water is heating up, but too slowly, replacing or cleaning the filter cartridge will probably solve the problem. Also, if the heater keeps turning on then off, this is also an indication that the filter needs to be changed. The more often the hot tub is used, the more frequently the filter needs to be changed. If the unit is not heating at all the first thing to determine is that the pump is moving water through the system (the heater wont operate if there's not sufficient water being pumped). If the pump is working correctly, the next step is a few electrical tests to determine the problem.and as you mentioned that one of the pump is not kicking in so as per the manual replacing the pump should increase the flow of water as required and this will definitely solve your problem of heating . in other case if replacing the pump by chance does not solve the problem then heating element also needs replacement "NO HEAT AT ALL, NOT ONE BIT, NOTHING !" This is very different from "it's getting a little bit warm". It could have the same cause, but a heating element is like a light bulb, it either works or it doesn't. If there's absolutely no heat the first thing to test is the heating element. IS IT GETTING ELECTRICITY? (Hint, if you have a 240v heater, you must test for 240 volts directly at the two terminals of the heater. Testing from one terminal to ground will give a proper reading even if the element is bad). The element IS getting electricity. If the element is getting electricity the next test is an amp test. If you don't know how to perform an amp test "call a qualified spa technician. Generally, a 120v heater should pull 12.5 amps and a 240 volt heater should pull 25 amps. If you're getting proper amperage draw, move on to "it's getting a little bit warm", below. If you're not getting any amperage draw, you have a bad heater element. Now the hard part, identifying the replacement element you need. Unfortunately (or fortunately) most all unit manufacturers acquire ALL their parts from elsewhere, assemble them into a unit and slap their name on it. Rarely is the brand of spa relevant in determining a specific replacement part needed. This means that rarely can parts be identified from the brand of the unit. With heaters and heating elements especially, about the only way to identify them is visually. Once you determine your heating element is the culprit and it's been removed from the unit, you can visually match it up to (hopefully) a comparable replacement. This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya
Answers & Comments
There are a few things which must be checked to find out exactly how serious the problem is, and whether it is necessary to call a repairman. If the water isn't heating up but it is circulating, this means that there is a problem with the heating element. But if the water gets too hot, some simple steps will lower the temperature.
The Filter CartridgeIf the water is heating up, but too slowly, replacing or cleaning the filter cartridge will probably solve the problem. Also, if the heater keeps turning on then off, this is also an indication that the filter needs to be changed. The more often the hot tub is used, the more frequently the filter needs to be changed.
If the unit is not heating at all the first thing to determine is that the pump is moving water through the system (the heater wont operate if there's not sufficient water being pumped). If the pump is working correctly, the next step is a few electrical tests to determine the problem.and as you mentioned that one of the pump is not kicking in so as per the manual replacing the pump should increase the flow of water as required and this will definitely solve your problem of heating .
in other case if replacing the pump by chance does not solve the problem then heating element also needs replacement
"NO HEAT AT ALL, NOT ONE BIT, NOTHING !"
This is very different from "it's getting a little bit warm". It could have the same cause, but a heating element is like a light bulb, it either works or it doesn't. If there's absolutely no heat the first thing to test is the heating element. IS IT GETTING ELECTRICITY? (Hint, if you have a 240v heater, you must test for 240 volts directly at the two terminals of the heater. Testing from one terminal to ground will give a proper reading even if the element is bad).
The element IS getting electricity.
If the element is getting electricity the next test is an amp test. If you don't know how to perform an amp test "call a qualified spa technician. Generally, a 120v heater should pull 12.5 amps and a 240 volt heater should pull 25 amps. If you're getting proper amperage draw, move on to "it's getting a little bit warm", below. If you're not getting any amperage draw, you have a bad heater element.
Now the hard part, identifying the replacement element you need. Unfortunately (or fortunately) most all unit manufacturers acquire ALL their parts from elsewhere, assemble them into a unit and slap their name on it. Rarely is the brand of spa relevant in determining a specific replacement part needed. This means that rarely can parts be identified from the brand of the unit. With heaters and heating elements especially, about the only way to identify them is visually. Once you determine your heating element is the culprit and it's been removed from the unit, you can visually match it up to (hopefully) a comparable replacement.
This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya
Well firstly verify the pump is getting power by using a multimeter at the lead wires. once it is (which I'm sure) that pump will need to be replaced!