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Check valve is stuck,you will need have it changed or removed. if you remove it it will take about 30 seconds when you start it up after sitting for several hours to go in gear. Because it has to get back up to pressure. It was a bad desighn by dodge because the check valve collects debris behind it and it restricts the fluid flow.
Yeah i would change out that board .Should be a 3 amp fuse so maybe as simple as that but if not a cycling blower motor is a tell tale sign of curcuit board
I had a similar problem, I could hear the valve clicking and spark working, but no flame. I checked for voltage as per the previous post, and checked continuity of both coils. Both showed voltage and continuity, but the ohm reading on one coil was less than the other.
I called a rv repair shop looking to buy a new valve ($120 - ouch). He didn't have one and when I explained what I had checked, he said could be that only one valve is opening. He suggested I remove one wire from each coil, turn the heater switch on and when I hear the spark igniter, touch a wire to one of the coils at a time. If it clicks, then it's fine, if it doesn't, then it could be the coil that needs replacing or the valve is stuck. If you see a spark as you touch the wire but no clicking, then it's a stuck valve. If there's no spark, then it's most likely a defective coil. A stuck valve can sometimes be freed by tapping with a screw driver.
In my case, one valve clicked, the other didn't and no spark was seen so I had a defective coil.
The previous poster is right, replacement coils are not offered as a replacement part - but - the repair shop I talked to saves all the coils out of old heaters and I was able to buy one from him for $10.
yes it could, it might even be the motor, take the electric suply and unplug it see if you can turn the shaft on the motor if not it froze up,, sometimes the get wet and seize, the you have to get a new motor
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