OP has a 2005 MH ----doubt fridge would use a 'thermocouple'
Spark Electrode YES
'no FL'....Burner failed to ignite/re-ignite
Flame proving signal is NOT being recognized by circuit board
Could be flame is not lighting off..dirty/clogged orifice or burner slots
Could be flame lights but flame signal is not being sensed by spark electrode cause it is dirty (soot/carbon)
Could be dirty/corroded spark electrode wire connection
Could be cracked ceramic insulator on spark electrode
Need to run fridge in AUTO on AC Power
Then go outside ...remove cover...expose burner...then unplug fridge AC Power Cord
Fridge will then swap to GAS and you can observe what is happening at burner
Sparks, Doesn't spark, Lights, Doesn't light etc