Original message
| oncall
 |  "tappan gas furnace inducer limit switch"
, posted Fri 16 Nov 21:50  
A friend of mine has a vaction house at the shore.the place is 2 years old,when the temp. is set back to 50 the the furnace runs fine.when theytry to rise the temp to 68 and the furnace runs a longer cycle it trips the inducer limit switch.the guy who installed the systemwill not return his calls.i was down in the summerand check the gas inlet pressure , vent pipes were clear,and furnace operated normal.air flow is good,and the a/c works great.any suggestions???????????? tappan gas furnace model#l1rc080d-16
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Replies:
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| WETBULB
| "Re(1):tappan gas furnace inducer limit switch" , posted Wed 27 Feb 22:23
You're either overfiring the furnace...gas pressure can be as low as 3.2" w.c. for natural gas and 10" w.c. for LP, or you are not moving enough air...total external static pressure should be at or below .5" w.c.
It's not the heat...It's the humidity
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