Need wiring information

It would be a big help, if you assist us who would like to help you! Provide more information, be more specific. What heater manufacturer and which model and are you using natural gas or liqu it would be a big help, if you assist us who would like to help you! Provide more information, be more specific. What heater manufacturer and which model and are you using natural gas or propane?
is it a furnace style heater, or is it a heat pump?
otherwise anybody who decides to assist you, is only guessing.

Try MFG website, or email their customer service, or try
manualslib.com

cannot do anymore company will not warranty should have told them lp if given to you you need to chenge the orfice if available then need to put a regulator on it not a safe move

If you have a control system (i.e...aqualink) controls on the heater should be set to remote. If that is the case and it still gives no temp reading, it is the thermistor (temp sensor). it is very common for rats to chew through the wire.

Take off the front and see if you can see the igniter come on. It should glow bright red and be easy to see. If not, then your problem could be several other things: Hi limit temp sensor, thermostat, pressure switch, overflame sensor, or even a disconnected or chewed through wire (rodents love to chew on these wires).

If you can see the igniter come on then you have a gas supply problem.

Hope points you in the right direction.

If you are talking about the "Roll out sensor" located on the lower left hand side, you have a problem with ventilation..Soot,debris, or possibly a rodent nest on the heat exchanger (Located just under the top cover of the heater). If it is electrical, you may have a bare wire touching the heaters housing (somewhere inside) causing a short. Rodents love to chew the insulation off low voltage wiring.

Replace the pilot generator. For a quote on the part, send us your heater make and model using the contact form at www.arrowpools.net

i had to replace the gas valve and forgot how to wire it

The low pressure indicator is for the gas pressure not the water pressure. The heater won't ignite because it's not getting gas to the igniter. Check gas supply, if okay, check gas connections, valves, etc.

The 1 HP motor should be fine on the jacuzzi.