had this issue for several years and several techs came out but no fixes. Most of time happens during the mid-night and early morning, and works properly in the daytime so the techs could not see any issue. Here is the description: “Normally happens in cold temp (below 30) and mid-night/early morning, working normally most of time during the daytime. The burner cannot stay on and results short cycling, the unit could stop before reaching the set temperature. . Inducer motor turns on ; 2. Igniters ignite for approx 5 secs 3. Gas shuts off, 3. Inducer motor continues to run, while flame kicks on/off frequently, and the blower could starts after dozens of trials, and the burner could repeat on/off during the cycle. I took some advice from a professional and vacuumed the drain tubes (which goes to the trap) from the inducer, it worked for 2 months and seems failed again. Occasionally i noticed there is some water traces right underneath the inducer.
The unit is located at attic, it is Goodman brand about 14-15 yrs old, had inducer, gas valve replaced last year, and I have cleaned the flame sensor but no improvement.
Any comments or suggestions? Thank you
The unit is located at attic, it is Goodman brand about 14-15 yrs old, had inducer, gas valve replaced last year, and I have cleaned the flame sensor but no improvement.
Any comments or suggestions? Thank you
source https://hvac-talk.com/vbb/showthread.php?2226386-Burner-flame-cannot-stay-on-Short-cycling-happens-only-in-midnight-early-morning&goto=newpost
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