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Hi my name is Robert....
When you turn the thermostat ON will the fan come on at all? IF the fan is coming on can you hear it trying to spark at all??
What is the make and model of the furnace.....
Follow ups are included.... Robert
Can you hear it trying to spark at all, as the fan comes up to speed it blows on a sail switch so you have proper combustion, once the sail switch closes it sends a signal to the circuit board on the furnace, at that time you will hear a click from the gas valve and it would start to spark.
IF you are not getting spark check your battery voltage, if the voltage was low, under 11 volts the fan may not spin fast enough to close the sail switch and then you would not get spark. Other possible issues are bad sail switch or circuit board. What I might do if your voltage is good is remove the circuit board from the furnace and have a local RV shop/store test the board, a special board tester can be used to see if the board is the problem. IF the board checks out good then it could be the sail switch. It will be a process of elimination.
IF you happen to find the make and model of the furnace please let me know, it will be an Atwood or Suburban...... Robert
HI... Was just checking in to see if my answer helped??? IF you have more questions or concerns please feel free to contact me....
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