madrussian
Member
- Joined
- Dec 19, 2016
- Messages
- 16
- Reaction score
- 4
Got an Amana/Goodman natural gas furnace. Model CHPF1824A6AA, about 12 years old.
Has worked great until late last week. LED lights blink 3 times, indicating an induction air problem.
I checked the vacuum switch - infinite resistance when induction fan is off. When induction fan turns on goes to zero resistance. I think this is OK.
Checked limit switch, it being cold - is closed at zero resistance (not open) - i think this is OK.
I need to check the . But what else do I need to check?
Has worked great until late last week. LED lights blink 3 times, indicating an induction air problem.
I checked the vacuum switch - infinite resistance when induction fan is off. When induction fan turns on goes to zero resistance. I think this is OK.
Checked limit switch, it being cold - is closed at zero resistance (not open) - i think this is OK.
I need to check the . But what else do I need to check?