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The first thing to do is to try a reset. Turn the power switch on the side of the furnace off, wait a minute or so then turn it back on and tell me what happens.
I did it already several times - nothing happens
Also when you "checked the fuse" which fuse did you check?
fuse that is same as auto fuse, I think 3
Have you flipped the breaker in the electrical panel off then on again?
I did it once
all of them one by one
Ok, I'm going to need a model number for your furnace
The red light that is on circuit is on - does it mean that electrical part is ok?
If you see a lit LED then the unit has power
Hang on a minute while I look up the spec for your unit
Is the LED bliking?
sorry for the typo> is the LED blinking
no, it stays
Also there is no clicking sound that should be when furnace trying to ignite
do you have a multi-meter?
what should I check?
Hang on, checking something
Are you sure you have a PG8U not a PG8J? You mention a clicking noise and my spec shows no pilot only hot surface ignition.
I have no spec for a PG8U
Let me recheck
It is PG8U and also label says: this device has no pilot and equipped with ignition device
Ok your clicking description sounded like a pilot burner electrode
Is the blower acess panel in place?
There is no clicking noise and I think it was earlier when furnace was operated normally
Ok the should be a switch on the blower with a red lead remove the red lead and wait for the LED to go out then reconnect it and tell me what the blinking LED sequence is
sorry I meant to say on the draft induction fan not the main blower
keep the blower door in place
Could you please give me more description or link to picture to understand where it is located
Is it upper door?
do you mean the draft fan?
where I should look for the led
The LED is on the circuit board
the exhaust vent starts at the draft fan
same that is currently is on when door is closed?
yes there's only one
I should remove it and put it back?
there is no viewing port?
you should be able to see it with the blower door in place
I mean what should I do to make this test?
There is a small round window to see Led
Remove red wire?
There is a safety switch on the on the draft fan. You want to remove the red lead until the LED goes out then reconnect it and tell me the blinking sequence
draft fan is behind upper door, correctz?
Yes. I have to leave and I don't want to leave you hanging so I'm going to opt out and open this question back up for my colleagues to help you. One should pick up your question shortly
I have found a page with “bad starting capacitor” and looks like it’s my case.
Here is the link:
After turned on for 2 hours, blower fan started for the first time and stopped. After about 10 attempts it’s finally started and not stopped and furnace currently working.
I have already resolved this issue and here is the info: I have found a page with “bad starting capacitor” and looks like it’s my case.
Yeah, you can usually eliminate the other furnace components by watching the furnace fire up. You can remove the door and set the thermostat for heat with the temperature set up higher than the room temp. At that point go to the furnace and sit in front of it while holding in the door switch (button). You will see the furnace try to fire. If it ignites and then shuts down after a minute or so it pretty much eliminates a few of the major components and narrows it down. One good way to visually inspect a bad fan capacitor is by looking at the top cap where the two terminals are and the wires connect. In some cases the top cap will swell and cause the cap to bulge upwards. A standard fan capacitor can be as cheap at around 5-10 dollars depending on size and can be purchased at any hvac supply house. Brand does not matter, just be sure you buy the exact size replacement and voltage. You can power the furnace down completely at the electrical panel and disconnect and use a screwdriver to bridge the two capacitor terminals while holding the insulated handle of the screwdriver. This will discharge any electricity stored in the capacitor and make for safe removal. You can then take the capacitor to a supply house for testing or replacement. The supply house will have to use a special capacitance tester to tell if it is within range. If the capacitor test good you will want to get back into the furnace and go further with diagnostics. I can also help with that as long as you own or borrow a volt-meter.
I am not in a hurry. Could you please point me where I can buy capacitor for my furnace online?