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OPTIMUM Heater Replacement Parts
Optimum Pool Technologies manufacturers high quality replacement parts for the most common pool heaters on the market today. When your heater needs a repair, fix it the OPTIMUM way!
MiniMax NT Manifold Schematic
Replacing your broken High Limit Switch is easy!
Two spades located on top of the switch provide easy installation into the heater manifold. Existing color coded wires can be unplugged from old switch and reused when replacing.
- Compatible Replacement for OEM Part No 471694
High Limit Switch 150°F
Compatible Replacement for Pentair MiniMax NT
This High Limit Switch is an important switch in your MiniMax NT pool heater, and is used to detect when your water temperature has exceeded a safe level (150°F). You MiniMax NT heater will indicate when it is time to replace the High Limit Switch when the “SERVICE” LED is displayed. It also may be time to replace your High Limit Switch if all 3 lights on the back of the control board are on and one or both of the switches shows an open circuit (given proper water flow through the heater).
- #17 On Schematic
High Limit 150°F
Heater Thermistor Probe
Pressure Switch
High Limit 115°F
K P
Reviewed in the United States on August 1, 2021
We have gotten many parts from the Pool Guy Supply and always packed nice and quickly. This part we had gotten some time ago and couldn't or wouldn't start. We had someone come and service but they didn't have the knowledge of the heater. So we went without using. we got a good pool person shop here and I explain to him what was happening and he said what we could do to see if it was the part which we did. Long story short the first part was bad and this works like a charm. This time they enclosed a card with a # on and maybe they could of told us the same thing, Their prices have gone up just like everywhere else but this so so much better then most places. Been pleased with the company.
William D. Saumier
Reviewed in the United States on January 30, 2020
The customer service is excellent, but the actual product fell apart. The top connection is poorly connected and easily falls off on everyone I purchased and had replaced.
1bigokole
Reviewed in the United States on August 3, 2019
This is a very poorly made product. Installed it and as I attached the wires to the terminals one of the terminals promptly fell apart in my hand rendering it useless. The rivet used to attach the terminal to the sensor is made of a weak and cheap material with no strength. Beware purchasing this part.
Daniel
Reviewed in the United States on December 16, 2019
Fell apart upon installation. Purchased both switches from the same company and installed at the same time. Both broke in different ways when installing. I will be going with another brand.
Bart Noble
Reviewed in the United States on February 1, 2018
did the trick
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