This kit will fix most trouble codes on this heater. If there are no led flashing codes remove the blue and yellow wires that come from the transformer to the circuit board. Measure for 24 volts ac at the transformer. If the 24 volts ac is not present you need to test the input voltage to the tranformer for 110 voltage. If the 110 voltage is present replace the 60025 transformer which is not part of this kit. Click Here for part number 60025
The following parts are included
1) 60105 Control Board
1) 60146 Pressure Switch rated at 0.40" of Water Column
1) 60139 Electrode Kit
1) 60015 High limit Sensor (4 Flashes= High limit 60015 )
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The parts came n Great time, all we really needed was the circuit board, so we are saving other parts for possible other problems, Price was only 15.00 more than buy just buying the board at other places. We will use Tess Tools as much as possible. Great Job Tess Tool.