Search: Posts Made By: SeattlePioneer
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01-22-09, 03:24 PM
Replies: 31
Views: 9,188
Posted By SeattlePioneer

With no voltage at the gas valve, you are not...

With no voltage at the gas valve, you are not going to get any gas to burn.

If you are satisfied that the pressure switch is staying closed reliably, then you have a bad ignition control module....
01-19-09, 10:20 AM
Replies: 31
Views: 9,188
Posted By SeattlePioneer

The overheating of the house is very likely a...

The overheating of the house is very likely a manifestation of the same problem --- the ignition control module isn't operating reliably. Sometimes it fails to turn the gas valve on, other times it...
01-19-09, 10:17 AM
Replies: 31
Views: 9,188
Posted By SeattlePioneer

Since the ignition control module is not...

Since the ignition control module is not switching the gas valve on reliably, you have a failing ignition module which should be replaced.

It's s safe bet that this will continue to get worse and...
01-17-09, 09:48 AM
Replies: 31
Views: 9,188
Posted By SeattlePioneer

There probably is a relay for that on the...

There probably is a relay for that on the ignition control module.
01-16-09, 07:20 PM
Replies: 31
Views: 9,188
Posted By SeattlePioneer

Hello there Torque, You did a good job of...

Hello there Torque,


You did a good job of observing and recording the sequence of operation of the furnace, which is perhaps the most powerful method of diagnosing a furnace problem.

That...
01-16-09, 08:46 AM
Replies: 31
Views: 9,188
Posted By SeattlePioneer

A house that's overheating suggests a relay...

A house that's overheating suggests a relay that's sticking, keeping the furnace on too long.

I'd start by using your multimeter to measure the voltage from chassis ground to both sides of the R...
01-15-09, 04:12 PM
Replies: 31
Views: 9,188
Posted By SeattlePioneer

Yes, typically the diagnostic code will continue...

Yes, typically the diagnostic code will continue to blink until the furnace is reset by turn the power off or the thermostat down.

You might consider cycling the furnace through the ignition...
01-15-09, 10:53 AM
Replies: 31
Views: 9,188
Posted By SeattlePioneer

A furnace that age with a metal vent pipe is...

A furnace that age with a metal vent pipe is typically an 80% efficient furnace with a circuit board or ignition module with diagnostic lights to help identify problems. It usually has a hot...
01-15-09, 10:32 AM
Replies: 31
Views: 9,188
Posted By SeattlePioneer

Sorry, but I'm finding no references at all on...

Sorry, but I'm finding no references at all on the web for the model furnace you give. Where does the hum seem to be coming from?

The circuit board or ignition module may be in the fan...
01-15-09, 08:09 AM
Replies: 31
Views: 9,188
Posted By SeattlePioneer

I'd start by taking the cover off the burner...

I'd start by taking the cover off the burner compartment of the furnace.

Post the model of the furnace off the rating plate inside the burner compartment, and the make and model of the ignition...
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