Search:

Any help would be appreciated...

I have a Lennox Model # G1603/4 100-1 S# 5887G10452 gas furnace. I powered up for the 1st time this fall and smelled gas in the basement. I observed that only 1 of...

I am having landscaping done and not sure to have the contractor install the outside AC unit on a full composite pad, a full set of blocks or corner only blocks to allow air underneath the unit....

CONCLUSION:

Gas Co. Tech measured draft in flue with old inducer blower and demonstrated how draft kept reducing; at first with inducer, then flame engaged then fan motor. It went below what I...

Chimney is only exposed for 1-1/2 stories above garage roof line. There is a 6 inch rectangular liner on the furnace side and a 12 inch liner on the fireplace side. Both have meshed caps to keep the...

All...thanks for help so far....here are some more observations while I wait for the parts...

Chimney had a healthy amount of vapor comoing out of it this morning that I could see from driveway
...

Also....

Furnace has a Robertshaw (indicates for Lennox on it) EC pac. There are no LEDs.

Tech is from Gas Co. I have a full service contract with. I hope they are not just parts swappers. Any suggestions on how to proceed if they indicate "it must be the chimney".

At least all parts...

Service tech looked at unit this morning....verified problem and ordered a new induction motor and pressure switch. Said if that does not fix the problem, the chimney needs to be looked at.

Any...

I will have model and serial number tomorrow. Current stat is a new honeywell 8500 digital with 4 wire hook up. However...furnace had the same problem with a Rite-Temp 4 wire digital too.

Toolpusher...

Thanks for the reply...

The stat calls for heat and releases just fine over a long period of time. All of the on and off is occurring during the duration of time the stat calls...

Can anyone give me an idea of what is causing the furnace to cycle the gas feed to the burners on for 10 seconds, then off for 10 seconds for the duration of time the thermostat calls for heat?
...