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Weil McLain Gold GV Series 4 Boiler STARTING ERRATIC
I have a 2002 model boiler as above. Last year the Bypass pump went out. I replaced the cartridges in both the Bypass and the Circulator pumps. Once this year, the boiler wouldn't start overnight. I turned off Power for a while and when I powered back up it started.
The Ignitor was replaced 2 years ago. This year I replaced the expansion tank, the temperature/pressure gauge and the boiler relief valve.
In watching the 5 Status Lights on the control module (POWER / TSTAT CIRC / LIMIT / PRESS SWITCH / FLAME):
- there is never a constant flashing light
- The Power light is on, and the Tstat Circ light goes on when heat is called for
- The Limit light goes on
BUT, I notice that the blower DOES NOT go on when there is a call for heat.
What happens is that after the Limit light goes on, the blower kicks in, but usually for a short time of maybe 1 - 3 sec., then the blower goes off and the flame doesn't light. During the short time the blower is on the Press Switch lightalso goes on. Sometimes this just keeps repeating.
Then finally, the Blower stays on and the press Switch light stays on, and then shortly afterward Flame light goes on and the burner licks on.
I'm wondering, why doesn't the Blower go on immediately when there is a call for heat? And, if it would stay on, would the Press Switch light stay on and the Flame start up on the first try?
Also, are there any common parts - other than the ones I stated above - which typically go bad. I would either replace them, or have a new spare on hand.
I've read posts here, and have a lot of ideas, but no conclusion on what my problem is.
Any ideas would be appreciated. SO, thanks ahead of time.