I believe the click or clicking is the ignitor attempting to light the burner. There may be air in the lines that needs to be purged or no propane in the tank. You might try turning on the stove (turn on stove gas supply for a few seconds and try to light it). If the stove doesn't light turn off the gas supply for a few seconds then turn it on again and try to light it. Once the stove fires up its sign most or all of the air is purged from the line. Then make another attempt to turn on the furnace.