RCU Forums - P70 Issue

First, I assume that the motor was running OK previously? If so, then the most obvious cause would a lack of starting gas. The gas is on for a long time in the start sequence, and it really helps to speed up the ramp. If you do not have enough gas getting fed to the motor, you wil see the same error message you are seeing.

So make sure you are getting a good fill in the propane/butane tank, and that a lot of liquid is going into the onboard tank. The Coleman Powermax can has a clunk inside of it, so make sure the botom of the can is facing downward when you are filling so that the clunk is in the fluid in the tank. We have seen a VERY rare occurance, where the clunk line fell off of the inside of the coleman powermax can, and only let vapor fill the onboard tank, that was VERY hard to troubleshoot and very rare, but it is worth mentioning.

If this does not fix it, we can move to raising the pump voltage on start up, but that needs to be done somewhat gingerly, just a few millivots at a time to prevent overheating and rubbing of the turbine wheel during start up.

Good luck,