Watkins 73790-PDR Titanium Heater, 1.5kW/6kW (Factory Upgrade Replacement), OEM Replacement
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Watkins 73790-PDR Titanium Heater, 1.5kW/6kW (Factory Upgrade Replacement), OEM Replacement

This 2015 No-Fault PDR (power down reset) Titanium Heater is the newest factory upgrade replacement heater from the makers of Hot Springs spas. Its double-pass sleek design replaces all previously discontinued heater styles. The double-pass feature efficiently heats the water in two stages and the titanium withstands corrosion. Now factory approved and warrantied for all 115 volt 1.5kW and 230 volt – 6kW installations for all 1995-now Hot Spring and Tiger River spa models. For 4kW, 230 volt applications see the 73791 PDR. Note#1: This PDR (power-down-reset) heater eliminates the manual reset button, which means that you never need to remove the equipment door to reset the heater. Simply power down the spa for 30 seconds by either tripping off the GFCI breakers in the sub panel (on 230volt models) or unplugging the spa (115volt models). Yay for this massive improvement! There is something about the manual reset circuitry on heaters that causes them to expire prematurely. This heater replaces all heaters in all 1995-now Hot Spring, Tiger River and Limelight hot tubs which includes the No Fault 6000 heaters, Watkins No Fault 5500 and the No-Fault 1500 cartridge style heater. Note#2: The inlet thermistor port on these style heaters may require a wrench to thread in the thermistor. Replacement Hint: It’s easier to replace a heater if the spa is drained. However, some folks leave the water in the spa, disconnect the vinyl tubing from their old heater and insert wine corks into the ends of the vinyl tubing. This insures a minimal amount of water loss during the change out. Clever repair techs use radiator hose pinch off pliers to clamp off the tubing.

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