How Do You Troubleshoot A Pool Heater?
Diagnosing or troubleshooting a pool heater like many other heaters can be done using meters, schematics and a little knowledge on sequence of operation. First figure out if here is power to the unit. Take he meter and measure the voltage at the point of power. This can be done by first shutting the breaker off, then remove the box cover where the switch that turns the unit on is, there should be 2 white wires tied together with a wire nut. Remove the wire nut, Take the meter and connect the black wire from the meter to the white incoming wire and the red wire from the meter to the black wire where the switch is. Then turn the breaker back on and measure the voltage it should read 120 volts If you have power now check to make sure the gas valve is turned on. If you have l-p (propane) gas make sure tank is full After you have determined there is power and gas now you can move on to the secondary part of the electrical system 24 volt Sometimes at the beginning of a season you will find t