Questions & Answers for: thermister pool heater

Pool heater wont' work. 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

pool reads 125 degrees, So, the heater won't run. NOt sure if the problem is the thermostat or the control panel. How can I check I am not sure if you have solved this issue, or not, but just in case.

Pentair pool heater reads HI 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

...pool heaters have a great troubleshooting section in the users manual (link below). Try walking through that step by step. It should help you correct your problem in no time. ...

...heater display reads "126" and won't turn off. After changing the thermister and resting power, display quickly read "r=5" then "126" which is where it is today. Display still won't turn off. those ...

...pool heater will turn on. The gas will fire it up and the furnance exhaust will work for 20 seconds then shuts off. The temperture buttons also will no longer work. I changed the thermister with no ...

...the thermister on a Sta-Rite heater. It needs a value to compare with on the control board. If you happen to have a fixed resistor available you can use one to test the heater. 7.5k ohms should

...pool heater The "sensor failure" message comes up on the self diagnostic screen. What is the best way to check the resistance value of the thermister as is indicated in the trouble shooting guide? ...

...pool heater The water temp reads 125-126 and actual temp is 80. Checked all connections and cleaned. Has thermister gone bad? Good SHOT! That's likely to be the problem - that or a poor

pool heater fires up only when jumped. And stays on when I take off jumper? I get short at each sensor too. But it won't fire up by itself?? Just replaced pilot light assembly recently. Seemed to work