Pentair MiniMax 75 User Manual (English)

Questions and Answers:

J
johnsoncaitlinJul 27, 2025
How to fix a Pentair MiniMax 75 Swimming Pool Heater that will not come on?
- A
  Amy CowanJul 27, 2025
  If your Pentair Swimming Pool Heater won't turn on, here's what you should check: * **Pump:** Ensure the pump is running. If it's not, place it in operation. * **Air Lock:** Check the pump for leaks, as an air lock can prevent the heater from starting. * **Filter:** A dirty filter can cause issues. Clean the filter to ensure proper flow. * **Ignition System:** Verify that the electrical connections are correct and securely fastened. If everything seems correct, it may indicate an issue with the automatic ignition system, and you should call a serviceman.
G
Gary PageAug 5, 2025
Why is my Pentair Swimming Pool Heater short cycling?
- C
  christopher17Aug 5, 2025
  If your Pentair Swimming Pool Heater is short cycling, meaning it rapidly turns on and off, here's what might be happening: * **Water Flow:** Insufficient water flow can cause this issue. Clean the filter and pump strainer. * **Wiring:** Defective wiring can also be the cause. Repair or replace the wiring if necessary. * **Bypass Valve, Hi-Limit, or Thermostat:** If the issue persists, there may be a defective or stuck bypass valve, a defective hi-limit, or a faulty thermostat. In these cases, you should call a serviceman.
B
Barbara EllisAug 15, 2025
What to do if Pentair MiniMax 75 Swimming Pool Heater operating after pump has shut off?
- S
  Sharon MitchellAug 15, 2025
  If your Pentair Swimming Pool Heater continues to operate after the pump has shut off, immediately shut off the gas supply and call a serviceman.

Pentair MiniMax 75 Specifications

General

Model	MiniMax 75
Category	Swimming Pool Heater
Heating Capacity	75, 000 BTU/hr
Fuel Type	Natural Gas or Propane
Heat Exchanger	Copper
Thermostat	Electronic
Efficiency	82%
Minimum Flow Rate	20 GPM
Maximum Working Pressure	50 PSI
Type	Gas
Inlet/Outlet Size	2 inches