Hayward HP50A - Test the Air & Inlet Temp Sensors

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Either the sensor(s) is/are causing the problem or the problem resides in the main
control board.
Following the chart (pg. 7), verify whether the air &
inlet water temperature sensors are reading accurately.
IF they are not, replace defective sensor(s) (HPX2000-
3242). IF they are, replace main PCB (HPXMCB50).
Test the Air & Inlet Temp Sensors
Step 7E
7. Error Code: E07/E19/E29 (cont.)