Twice in the last two weeks, the pilot has blown out in our wall furnace. We are having windy weather. When relighting pilot, I press the transfer button on the relay, normally, after 15 seconds, the gas valve relay will latch on allowing me to release the button and pilot remains lighted.
What is different now, AND NOT TYPICAL, is NOW, when I relight the pilot, and hold button in for 2 minutes or longer, releasing the button allows the pilot to turn-off, the gas valve relay did not latch-on. Thwe thermocouple junction is being lighted by the pilot flame and area is free of dust.
The only way to cause the relay to latch-on and keep pilot lighted, is to hit the valve-relay body several times with the handle of a plastic screw driver.Recently not-latching has happened twice.
What could be wrong? Is the thermopile [thermocouple] bad or is the gas valve-relay bad? Or is something else bad?
Thanks for your thoughts. Dave_s