HVAC Questions? Ask an HVAC Expert for Answers ASAP
Continuous short blinks, one every second. The ICM275 manual says no error flash codes for this controller http://www.icmcontrols.com/ProdImages/ig_LIAF083-1.pdf
I see 27.4 VAC between R and C
The function I want is for the heating to work. Does this answer your question?
Jumped R to W, plugged into power, observed for 5 minutes. Led still blinks but nothing else happens.
I am not familiar with the up/downflow terms. Here are two pictures of the unit. Hopefully it will give you the information you need
Yes, part placement will be useful. I am not familier with HVAC systems.
Thank you.So when R is shorted to W...the exhaust fan (the fan above burners) does not start?See page 3 HERE then locate switch number 1 and 11. Press the center of those and tell me if one clicks.Billy
Bingo! The switch on top of the main blower clicked and now the burners start (the unit looks different than the document you sent me, one switch is up above the main blower and one at the center near the small fan).
What does it mean, did it get over heated? Should we block even more burners?
Two of the 6 burners were disabled by the tecnician. You can see the pictures here (notice the aluminum foil on the left burner)
I just looked at the coil, it is very clean. Probably as part of the service we had.
What would you recommend us to do to avoid repeating this problem?
How do we speed up the fan?
Should we replace that manual-reset switch in case it became too sensitive?
I just turn the cooling and we have nice flow of air throughout the house. Does this answer your question?
Closing the two burners did not solved the problem so possibly we did not need them in the first place (this is an old system and we never had this blower shutting off problem before).
LO = Red
HI = Black
Yes and no. The motor has 5 wires going out of it. 3 of them are going to the controller
The red and black are connected to the controller here
Here is the label
If I understand it correctly the temp rise is 45-75 degrees (Celsius?)
I have this thermometer
It's the IR type. If it's not good, I can go and grab something from a store.
Here are the readings in Fahrenheit
1. Duct above the unit: 95
2. AC coil below: 182
3. Air vent at nearest room 130
4. Room temperature before the experiment: 80
5. Outside temperature: 92
If I undersand correctly the rise is 182-95 = 87F. This is on the high side and only with 4 out of 6 burners.
The entire house (two floors, total of 2500 sqft) got fast very fast so the ducting is good?
Yes, I measured 95 at the big metal plate above the cabinet http://imgur.com/wV3WQ2v,89upcTq#1 (I fully closed the cabinet before doing the measurements)
I tried to stay away from the chimney round pipe.
The temperature in the house was 80 before I turned the heating on
1. Motor RPM never mentioned. Is there a way to measure? What the RPM should be?
2. Will it help to close more burners or partially close the gas valve that lead to the furnace help?
3. I am surprise why the manual reset switch near the blower trips. This is before the furnace right? If so it see mainly the incoming air temperature?
Some short circuit in the ducts where hot air is fed back to the intake is out of question, right?
Oops, I forgot to mention. I touched blindly the blower blades on both sides and they felt clean.
Hi Billy, one more question if I may, you mention blank plugs, any idea where I can find them or what are good names for searching them on Google?
Thanks a lot for your patient and help. It's the first time I am using just answer and it exceeded my expectations. I am closing this incident.