Our water heater works on both electric & propane. Usually, all I have to do is turn on the switch for gas from inside the trailer and it fires up. On our recent trip it didn't seem to be getting any gas. I can hear the starter clicking but it won't fire up. The reset buttons had not tripped. Can't figure this one out. Yes, I have propane in the tank it was also running the fridge and the stove top.
2008 Cruiser RV Fun FinderXtra
Ford F150 Lariat 4x4 SuperCrew 5.4L 6.5' Bed 150" WB 3.73
Schwinn Mountain Bike
Ours is under the dinette seat. WHile remaging around in the under the seat storage we knocked off the red lead that goes to the electronics module on the water heater. This gave us the same indications you have.
On ours I could hear the relays/solinoid for the ignitor but there was no spark, hence it wasn't lighting the gas.
Bob & Deb
12 F150 HD SCAB EcoBoost LB 4x4
06 Starcraft 18SB
I had the same problem, I was out of propane. I do not say that to be smart, I was a new owner and had no clue what was going on. Filled the tanks, water heater fired right up. Oh, and my tanks had SOME propane, just not enough pressure to get the heater to fire.
I even replaced my igniter thinking that was the problem.
Thanks and good luck.
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If you follow that link, you will see that I cleaned the spark probes and reset their gap to the specified 1/8" to get it working problem free.
What you can do is open the WH cover and then turn on the WH and watch and listen to what happens. You should hear 1 loud click as the valve that controls the propane opens and then hear the hiss of the propane. Shortly after you should hear the rapid ticking of the sparker as it tries to light the propane. You should be able to smell propane and if in shadow or dark enough, you should see the spark at the end of the propane tube. Watch out for getting too close!
Find out what if any of these things you see and hear and let us know. There are other possibilities as well, as the other posters have said.
Are you sure you are NOT getting gas? I had the same problem and ASSumed that the spark was present because I could hear the "clicking". When I looked however, I could tell that there was plenty of propane and I wasn't always actually getting a spark (even though the clicking noise was there). I just ASSumed the clicking noise was the actual spark being made but it isn't.