Heat not working - http://www.hvacmechanic.com/ Forums
Original message
| Bigjim
 |  "Heat not working"
, posted Sun 9 Nov 09:41:  
I have a Tempstar NULK100DH05 furnance that will not heat..
1. Thermostat calls for heat.
2. Draft inducer motor starts.
3. Pressure switch closes.
4. Draft inducer runs for 30 seconds to a minute you do not hear a gas hissing sound. The ignitor did glow, my furnace shuts down and goes into a lock out condition even if you turn your power switch off and on again the same cycle repeats with no heat.
I do have a gas fire place that is working.
Bigjim with question and some answers
[this message was edited by Bigjim on Sun 9 Nov 10:10] |
| Replies:
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| Xenos
Webmaster 
| "Re(1):Heat not working" , posted Sun 9 Nov 09:56
BigJim as in Fishing ? if not oh well. As far as the furnace goes for some reason it’s not getting gas. Possible auxiliary limit but this one may be best serviced by a professional. Also make sure some fool isn’t playing a joke on you and turned off the meter.
Xenos.
The best way to escape a problem is to solve it.
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| | Ad Mech
| "Re(2):Heat not working" , posted Wed 12 Nov 20:15
Bigjim
No Ignitor glow tells me that you may have a bad HSI..check resistance across it..should read like a direct short..if it is good check limit switches like flame roll out, over temp, and pressure switch..
Good Luck
Dave
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