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Old 09-23-2008, 08:06 PM   #1
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HSI reading for MBA 060 NH3R


I have a furnace made for Johnstone supply I believ by Consolidated Supplies, model # MBA 060 NH3R. The HSI is reading 5.1 Ohms, is this normal? I am used to seeing double digit readings, usually upwards of 50 Ohms and more. Thanks for the help.

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Old 09-23-2008, 09:20 PM   #2
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HSI reading for MBA 060 NH3R


I've seen igniters as high as 200 ohms, and as low as about 5.

Is it a small nitride type like this?


It's been a while since I measured one, but if I remember right, they read about 5-10 ohms.

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Old 09-24-2008, 05:22 AM   #3
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HSI reading for MBA 060 NH3R


The continuity will vary due to a great many factors. If it HAS continuity, does not appear fatigued, and has full rated voltage delivered to the cuircuit-it will function. This does not necessarily mean it will light the furnace.
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Old 09-24-2008, 06:01 AM   #4
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HSI reading for MBA 060 NH3R


I was just doing a maintenance on my furnace and the HSI was reading 5.1 Ohms. I'm not having a problem with the furnace, I was just wondering if 5 ohms was a low measurement or not. Thanks for the insight. It is a small ignitor like the one pictured Kyle, but it doesn't screw in anywhere, it is held in with a clip along with the flame sensor.
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