Furnace Problem

[sispro]

Hi there and first of all I would like to say very nice site and glad to have found this.

OK here I go.

I just bought a York furnace I think Model No. is PBKM-LD14N100E

I got it all hooked up in my shop and when I turned on the power and the switch the little blower I call it came on then this red glow coil lighted up and then heard a click but no flames came on this did this about 3 times and then the main blower kicked on and ran which I thought wasn't right because the heat box didn't heat up yet and the blower shouldn't came on yet.

I don't have any manual or anything with this furnace and not sure what thermostat to use with it. I just have a regular one on there that goes from 50 to 90 dial type.

Hope someone can help out on this need a manual to for this.

[HayZee518]

just out of curiousity was the manual gas valve to your furnace open? many people wonder how come no operation because they forgot to turn on the supply. the thermostat starts a series of steps. it turns on the combustion blower, it starts and opens an inducer fan motor, it starts the hot surface ignitor. if there is a switch that proves the inducer fan motor is running, is it closed?

[sispro]

the gas is on the thermostat is set to the lowest point.

The gas does not come out for the furnace to start

also the main blower should not come on till the heat box is up to temp that is the way i thought all furnace should work.
the big is issue is why the fuel is not coming on when the click sound happens on the valve.

[HayZee518]

some furnaces use a pilot flame to light the main gas valve, some just use a hot surface ignitor next to the main burner. without actually looking at an operational schematic we are all just guessing on what is supposed to happen. now there's a lot of things in a furnace control system that go CLICK. relays click, electronic ignitions go click, click, click. main valves go click. the schematic diagram will show what is supposed to happen in sequence. find that diagram and we can then troubleshoot what is the problem. gas valves are expensive! $200 - $350 per valve!
Why do people wait until the last minute to troubleshoot their furnaces? Wouldn't it be prudent to try their systems in late summer so they wouldn't have this problem NOW?

[sispro]

Okay I think you are confused here so let me write this again.

1. the furnace will start the Induced start and run fine.

2. the ignitor will start and glow bright red.

3. the clicking sound is coming from the value like it is opening up to let the gas flow but no flame start and then after a few seconds the ignitor will go out and the furnace will still run for a few then start the cycle all over again on third time the blower will start running. which shouldn't happen unless the box is hot to kick it on.

here are some photos I took to give you a ideal of what it looks like.

[HayZee518]

OK from what you've said everything is working but there's no flame even though you heard the main valve click. the spool in the valve is not shifting opening the gas to the burner. the click is the solenoid part getting sucked into the coil. the mechanism of the valve is therefore shot. replace the valve. as far as the other thing you say about the blower, older furnaces used a plenum limit switch to turn on the blower when the plenum temperature reached a certain temperature. evidently yours doesn't have this but an electronic timing circuit for the blower. it doesn't rely on any temperature increase, just a timed circuit for when the gas is supposed to come on and a calculation when the plenum reaches a working temperature. so blower works, inducer works, you still don't know if the inducer fan closes a mechanical switch, hot surface ignitor works. all that's left is the valve.

[sispro]

just my luck i bought a piece of junk teach for buying off of craigs list.

i needed a furnace for my shop and now back to the drawing board

[hvacwiz]

Have you bleed all the air out of the gas line? if so check for 24v at gas valve when you here it click, if you have 24v then you have bad gas valve. your blower probaly works on time and not temp. after call for heat blower comes on after 30-45 sec regardless if you have flame or not.

[sispro]

here are some photos