All pro 170T dual fuel heater starts and runs for about 5 minutes then shuts off with an fuel ignition trouble message. after abuout two minutes it will start back up and run for another 5 minutes then repeat the cycle whats the fix?

Here are some possible causes and solutions:

Insufficient fuel supply: If the fuel supply is not sufficient, the heater may shut off. Check the fuel tank and make sure it is full. If the fuel tank is full, check the fuel line for any blockages or leaks. If you find any issues, repair or replace the fuel line.

Dirty fuel filter: A dirty fuel filter can cause the heater to shut off. Check the fuel filter and clean or replace it if necessary.

Faulty photocell: The photocell is responsible for detecting the flame. If the photocell is dirty or faulty, the heater may shut off. Clean the photocell with a soft cloth and check if the heater works properly. If the problem persists, replace the photocell.

Defective motor: If the motor is defective, the heater may shut off. Check the motor and replace it if necessary.

Broken ignition system: If the ignition system is broken, the heater may shut off. Check the ignition system and replace it if necessary.

As you have covered some other possibilities, if the above doesn't offer relief, you may have to consult a professional technician or contact the manufacturer.

15 PSI

Manual for 17* series

https://heaterpartscentral.com/content/manuals/000228-01.pdf

https://www.google.com/search?q=all+pro+pro+series+170t+manual

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Question edited for maker name.

Troubleshooting videos

https://www.google.com/search?q=reddy+heater+170t+will+not+start

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Hi Kaza.
see if this link helps you out.
reddy heater 170t turns on and runs for few mins then shuts off Google...

The photo eye needs cleaning,the eye is not reading,I would send you a pdf manual but I can not on here there is no place to send it to you sorry

it only shuts down because of an overheating condition or the lack of fuel. if you have an ohm or multimeter, check the ohms on the fan and see if you have any resistance. If you do the fan is good but may still not be putting enough air across the heat exchanger to safely alloww the heater to run without causing a fire.

make sure air and fuel filter are clean.Set pump pressure to mfg set pressure after two minutes of operation

the home heating fuel will gel thus the heater will shut down

It sounds like it is currently working .. is that right? Or does it only work if you let it sit for an hour, still? The blue smoke probably is from the residual fuel not burnt when it "threw raw fuel out the end" some the fuel probably drained to a low point ..outside of the combustion chamber and then may have ignited after shut down.. to cause the blue smoke out the back... when you turned it off.

If when your starting it up... it doesn't start the first time.. wait 10seconds then try again.. noting what it apparently does.. and doesn't do. does it just 'through fuel for 5 seconds.. does the fan spin .. and push air at the same time when its starting? If yes for both, does the ignitor ignite the fuel/air mixture, briefly then it shuts off.. ?? Hope this line of thinking helps you out
md

Dustin, The ignitor only glows for 5 seconds, just long enough to ignite the fuel. The heater is shutting down because the photocell does not see the correct flame color.
Since you say "comes on for 5 seconds", I can only assume that there is a flame. You do not specify a lack of flame. I am also assuming that you have had the heater running this heater season and the problem just started.

YOU must find out if the problem is fuel delivery related or electronics related. Start by checking the pump pressure.

Follow these troubleshooting tips