Search: Posts Made By: Victor111
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12-18-12, 08:27 AM
Replies: 12
Views: 3,505
Posted By Victor111

Radiant Sensor

I believe that the plastic box mounted on the same bracket as the ignitor is the Radiant Sensor, and since I do not have the thin rod flame sensor, could this box be intermittently stopping the start...
12-16-12, 12:42 PM
Replies: 12
Views: 3,505
Posted By Victor111

I see no thin rods ------

I see no thin rods sticking into burner unit area. There is a small plastic box mounted on bracket where ignitor is attached. I see what look like "thermisters" --- one at top of burner nozzle...
12-16-12, 11:04 AM
Replies: 12
Views: 3,505
Posted By Victor111

Furnace schmatic

The schematic on the blower door is more of a wiring diagram and not a control board circuit diagram. By the way, the unit has an ignitor and does not have a pilot flame sensor.

The only hint I...
12-16-12, 09:28 AM
Replies: 12
Views: 3,505
Posted By Victor111

Problem is intermittent---hard to diagnose

The problem is intermittent and some time goes by before I notice the temp is not up to setting --- so I am not present at the unit to detail the control/operation trail at failure.

The TRANE unit...
12-16-12, 08:19 AM
Replies: 12
Views: 3,505
Posted By Victor111

So far, so good

Unplugged and plugged some of the connectors at furnace unit about 4 days ago. SO far the unit seems to be functioning properly.

The only thing I can guess that is wrong would be the control...
12-13-12, 09:48 AM
Replies: 12
Views: 3,505
Posted By Victor111

Clarification

Thanks for the replies!

The unit is 17 years old. The Model # is TUJ100A960A1. TRANE unit.

More explanation:

Thermostat says HEAT ON. 24 volts is supplied to the control circuit. Unit...
12-12-12, 08:40 AM
Replies: 12
Views: 3,505
Posted By Victor111

Furnace to start needs unit AC switch shut off then on sometimes

Must shut off, then on, furnace unit AC switch to start TRANE furnace. Thermostat is OK. Happens a few times daily. Any ideas? Thanks.
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