Hot surface ignitor question


Old 04-04-18, 03:43 PM
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Hot surface ignitor question

I have a Carrier Weathermaker 9200. It was not working and had code 34 that I narrowed down to the HSI(Hot Surface Igniter) So I replaced it and the furnace fired right up and is working. The only thing is the HSI is staying red hot while the gas furnace is on. Is that normal? I would think it would click off after the flame is lit. It does turn off normally when the thermostat reaches temp and clicks off when furnace is not running.

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Old 04-04-18, 04:56 PM
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No, that isn’t normal. Have you confirmed it’s constantly getting power?
If so that’s what killed the old one.
Old 04-04-18, 05:36 PM
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Welcome to the forums.

Post the model number of the furnace. It can be found inside on the side wall near the burner. Post the part number off the control box too.
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