Question about Pentair Minimax NT Heater
Pool heater wont work and reads HI
Thermister needs to be replaced. follow small yellow wires off control board to front header and thats where the thermister goes
Posted on Jun 22, 2009
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Posted on Jan 02, 2017
SOURCE: Pentair Pool Heater reads HI
I am not sure if you have found the answer to your issue, or not, but just in case. The display showing HI means that the heater is "reading" the water temp at over 114 degrees.
This will go away if you change out the Thermister on the inlet manifold for the heater.
Posted on Jul 08, 2009
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