Original call was for "no heat."
Went out, put dryer into service. Noticed that the dryer started as soon as I advanced the timer, so push-to-start switch is stuck in closed position.
Put my mirror at the observation port, saw a nice bright glow, and then heard the flame ignite. The sound was absolutely wrong -- sounded like wind rattling the windows -- whump whump whump.
Took the dryer apart, held the belt switch in place and watched. When the flame ignited, it moved in bursts, like a guttering torch. After about a minute the flame shut off. This seemed dangerous to me -- bad and incomplete combustion. Maybe I'm just a pantywaist, but I don't like flame stuff misbehaving.
Quizzed the tenant. No other propane appliance is acting up. Tank is at about 25% capacity, give or take, so should be enough to supply steady pressure. Hot water tank is on the same line as the dryer, and according to tenant it's been fine.
Put in a new valve set (WE14X215) and a new propane conversion kit. Started the dryer up. EXACT same behavior -- bad quality, inconsistent flame. When flame ignites a small "POP" happens at the orifice with a yellow flame and then there's a small blue flame right at the orifice along with sputtering blue flame in the burn tube.
Tech sheet says to check venting -- this all happened with the drum off or on, and with the vent hose disconnected from wall. Additionally, tech sheet says to check safety thermostat and trimmer -- I alternated taking the wires off these and running the dryer with the leads alligator clipped together -- same behavior.
So. New valves, electrical checks out. Thoughts?