How to Troubleshoot a Pentair MiniMax NT Pool Heater

Pentair’s MiniMax series of streamlined aquatic heaters cater to both big pools and small spas. The MiniMax NT line encompasses conventional NT and NT LN versions, but Pentair advocates the same troubleshooting procedures for each these types.

Basic Treatments

Begin with the simplest solutions first. Assess the “Pool/Spa” switch and set it into the “On” position; even when the heater is powered on, when it is not set to “Pool/Spa,” the unit won’t heat the pool. If the switch is set properly but the heater’s “Power” light does not shine, then check the fuse box to get a blown fuse or tripped breaker.

Cleaning Is Essential

If the MiniMax fails to start or quickly cycles on and off, a dirty filter may be to blame. To clean the filter, remove the filter in the filter compartment, located between the heater and the pump, and spray the filter using a Stump Removal near me Littleton, CO hose to clean any buildup. A dirty burner also can limit heating Boston repair specialists potential. Disconnect the unit, remove its burner tray and gently brush the tube-shaped burners using a plastic- or wood-bristled brush, then spray off the residue with clean water to remove soot in the burner.

PH Issues

Improper pH balance on your pool’s water may result in a lot of problems, including issues such as a clogged filter, scale forming on the heat exchanger, corrosion of the heater’s metal fixtures and heater leaks. If you experience any of these problems, then check your pool’s pH balance and fix it accordingly. For optimum MiniMax NT operation, Pentair advocates a pH range of 7.4 to 7.6, using a entire alkalinity dimension of 100 to 140 parts-per-million.

Beyond DIY

Several MiniMax NT problems — such as gas-related problems, faulty electrical connections, bad flow valves, a defective thermostat or some other cases of the error code “ERR” — need attention to a Pentair-authorized service technician. Pentair’s site hosts a dealer locator tool, and the company provides, an online community centered on pool maintenance and troubleshooting. Newly bought MiniMax NT heaters include a limited factory warranty.