[kf74]

Hello:

I woke up this morning to the present surprise of a slightly cooler than normal house. So I checked the T-stat and it was calling for 70F but the room temp was only 65F. So, I first checked for gas. My water heater is working and I can hear gas "hiss" at the heater unit when it attempts start-up.

Before I go too much further, I have a Carrier 58STA090-16. The unit when into service in winter 2003.

As I stated before, I can hear the gas "hiss" but I do not hear the ingnitor activate. It attempts to ignite 3 times and displays code 34. After the third attempt the unit stops and displays code 14 - "ignition lock-out".

So, I gather for some reason the ignitor is not working. My question is, what should I check next? What could be the problem?

[hvac1000]

Test or replace the ignitor for the HSI system. Location near burner. Look at the blower door panel for wiring diagram and test voltages. Ignitors do go bad.