Raypak 407A “sensor failure”

[sotoboy1]

I have a Raypak 407A. Left the heater set at 84 for an evening and woke up to an error on screed reasing sensor error. The temperature reading is all over the place. When I attempt to turn it on, the screen says “no demand”, then “ignite” (I hear the attempt at ignition), then “sensor failure”.

If it is the thermistor, where do I find it to replace it? Is it something an untrained “professional” can accomplish?

Any assistance is greatly appreciated.

 

[ajw22]

Welcome to TFP.

Manual is at https://s3.amazonaws.com/AWSProd/sites/raypakcom/documents/241793.pdf

Page 43 - Temperature sensor is part 6-C P/N 009577F

You can see on page 42 where it screws onto the header.