Tripped Breaker — If you have an electrically heater hot tub, one of the first signs your heater is going bad is that your electrical breaker will trip frequently.
You can test to see if it is indeed the heater causing your circuit breaker to switch off by shutting off power to the hot tub at the breaker box, then disconnecting the wires or tabs leading from the heater to your spa circuit board.
Master Spa Parts is here to help! When a hot tub heater goes bad it is usually due to a major component failure within the assembly.
This number is normally located below the bar code on the heater label. When you are choosing a heater to replace your existing malfunctioning heater just make sure that the kilowatts of the heater, size of the heater and the connections are correct. Service Professionals Click here for discount! Shop By Brand. The spa heater elements housed inside the assembly can burn out very quickly if operated without cooling water surrounding it.
They are also prone to developing scale or hard water buildup if you use a salt system to sanitize the water. This can cause limited heat output or can ultimately end in element failure. The spa heater assembly is typically housed in a stainless steel chamber with unions for easy removal. IF you have power, continue to the second step.
Step Two: Check for Error Codes If you have power or have restored it to the unit and the water is still not heating, you need to move on to step two and see if the spa is working correctly. If you have a newer hot tub model, this can be simple to decipher because your topside control panel takes out the guess work.
If you look at the panel and see the error code OH, your hot tub has overheated. IF you get the FLO error, check your jets. This could be a spa pump issue that needs resolution. It could be clogged or worn out, leading to hampered water flow.
When the current flow is interrupted or diverted, no heat is created. Spa heaters consist of an element inside a stainless steel housing.
As water flows through the housing, heat is exchanged from the element to the water. The assembly may also incorporate sensors: hot tub high limit switch and thermostat.
Heater assemblies come in various forms. A heating element is similar to a light bulb in that the filament is a heating coil. In time these can break or burn out.
Assuming the control system and pumps are working properly, no heat can indicate a burned-out or broken heating coil. Note: Catastrophic failure of the heater element can be caused by a dry fire. This occurs when the heater is operated with little to no water present, or with greatly reduced water flow. The element will often have visible signs of damage when a dry fire occurs.
Although properly functioning safety devices are designed to help prevent dry-fire, like all devices, these too can fail in spas. Low heat is more often caused by a reduced water flow rather than an electrical problem with the heater itself. Check your filter to make sure it's not clogged, and that there aren't other obstructions restricting spa water flow.
Excessive scale buildup on the heater element, as a result of poor water balance , can reduce heating efficiency. Calcium buildup not only reduces heater efficiency, it eventually results in element failure.
Regular use of Spa System Flush can help eliminate scale. A heater causing the GFCI to trip, usually indicates a short caused by water intrusion into the element's outer sheath. Water can seep inside at various other entry points like the epoxy seal or the braze. The most common cause will be a pin hole in the sheath caused by corrosion.
When electrical current finds a path from the heating coil to the water, the short will trip the GFCI. If you do see a hole in the sheath, there's no need to proceed with testing- the element is toast!
Evaluate heater elements by first disconnecting both power leads from the heater terminals, then taking measurements with an ohm meter. Disconnect all electrical power to the spa prior to any inspection or repair, and before heater removal and testing. To test hot tub heating elements for integrity, use an ohm meter on its lowest setting. With the meter's test leads, measure the resistance between the two element terminals.
These tips are provided for informational purposes only. Perform any repairs at your own risk or hire a qualified service technician. To replace a hot tub heater element, turn off the spa completely and turn the breaker off. Then drain the spa or shut off the service valves on either side of the heater. Remove the spa heater by unscrewing both heater unions taking care not to loose the o-ring inside each of the unions. The o-ring provides the water seal at those points.
The heater unions may be removable by hand, or by using large pliers or channel locks. Be careful when using pliers not to crack the heater unions on either side of the heater. You will need to disconnect the 2 lead wires that are connected to the 2 heater lug nuts and note their connections when replacing them on the new heater or heater element. Once the heater manifold is disconnected, remove the heater assembly from the spa and loosen the 2 lug nuts to get the old heater element to drop inside the tube for removal.
To replace heater element, undo top 2 nuts holding the heater element to the heater manifold tube. Take out old element.
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