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Old 01-02-2010, 05:00 PM   #1
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York Stella Plus Gas Furnance - Intermitent Ignition


I have a York Stella Plus HVAC System that has intermittent lighting issues; the unit will cycle through without lighting until the main switch is turned off and on again. Once this happens, the unit will ignite sometimes upon letting it stay off for a minute or so.

Here's what I have done so far:
- Checked the gas valve, and detect gas is flowing, but I am not sure of how to check voltage readings on the vale connectors; that I would like to know how to do.
- I can hear the relays clicking on and off
- The control Module LED come on and off as it should to show is is error free
So I am not sure why the ignitor seems to fail at times, any suggestions? I have checked behind two other service techs, both gave to different opinions with one being at least in the ball park sort of and the other not even close.


Last edited by BigBob1H; 01-02-2010 at 05:06 PM. Reason: Not enough information
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Old 01-02-2010, 05:13 PM   #2
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York Stella Plus Gas Furnance - Intermitent Ignition


"I have checked behind two other service techs, both gave to different opinions with one being at least in the ball park sort of and the other not even close."

What do you mean by in the ball park?

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Old 01-02-2010, 05:38 PM   #3
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York Stella Plus Gas Furnance - Intermitent Ignition


Just use your test probes on the connectors at the gas valve.

probably a problem with the venting. Or moisture in the tube to a pressure switch.

Is this the one witch 3 wires on the pressure switch.

What did the techs say.
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Old 01-02-2010, 07:54 PM   #4
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York Stella Plus Gas Furnance - Intermitent Ignition


Did the two techs actually lay eyes on the furnace or is there diagnosis something you got on the phone based on the info you provided?
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Old 01-02-2010, 09:05 PM   #5
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York Stella Plus Gas Furnance - Intermitent Ignition


Quote:
Originally Posted by yuri View Post
"I have checked behind two other service techs, both gave to different opinions with one being at least in the ball park sort of and the other not even close."

What do you mean by in the ball park?
When I contacted the York Company, they suggested that the problem could be related to possibly 3 other components:
1 - Gas Valve
2 - Ignitor
3 - Control Module

One of the technicians suggested that I consider replacing the Valve and Ignitor but did no troubleshooting on the system.
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Old 01-02-2010, 09:07 PM   #6
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York Stella Plus Gas Furnance - Intermitent Ignition


Yes, this pressure switch has three wires.
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Old 01-02-2010, 09:09 PM   #7
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York Stella Plus Gas Furnance - Intermitent Ignition


Both technicians came over and looked at the system; but I watched and they really didn't oonvience me that they were solid with troubleshooting techniques.
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Old 01-02-2010, 11:00 PM   #8
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York Stella Plus Gas Furnance - Intermitent Ignition


Quote:
Originally Posted by BigBob1H View Post
Yes, this pressure switch has three wires.
Always dislike that set up.

Check your vent system. Probably not closing the pressure switch all the time.
Once in a while they also get moisture in the hoses to the switch.

Should use a manometer to see what pressure the switch is sensing.

Did you talk to the York company. Or an Independent York distributor, or a York dealer.

York tech reps WON"T take to a home owner. And WON"T give diagnostics without getting diagnostic info from you, that you didn't provide in your post.

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