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Old 04-28-2010, 08:19 PM   #1
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White Rodgers 50A50-405 heat blows cold


My gas heater unit stopped working. It continues to blow cold air with thermastat turned up. No problem with a/c. I tried all the basics I could think of shut breaker, checked connections ect. Any advice would be appreciated. Does this sound like a mother board problem?

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Old 04-29-2010, 05:45 AM   #2
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White Rodgers 50A50-405 heat blows cold


Made this into its own thread.

Does the HSI glow?

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Old 04-29-2010, 07:05 PM   #3
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White Rodgers 50A50-405 heat blows cold


Thanks for your response.
No glow from hot surface ignitor. Sound like fan noice first followed by blower eventually kicking on with cold air.
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Old 04-29-2010, 07:49 PM   #4
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White Rodgers 50A50-405 heat blows cold


I'd check the HSI, see if ts bad or not.
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Old 04-29-2010, 09:09 PM   #5
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White Rodgers 50A50-405 heat blows cold


Ok, thank you I will start there and follow up when I replace the HSI.
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Old 05-04-2010, 06:19 PM   #6
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White Rodgers 50A50-405 heat blows cold


Thanks!! Fired right up
was bad HSI.

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