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Unknown issue with Whirlpool gas slide in range

Wineguy

Dec 17, 2022
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Dec 17, 2022
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I have a 1 1/2 year old Whirlpool gas range that recently (after warranty, of course) has issues with oven preheat, and matching temps with the digital readout and actual oven temp. The diagnostic initially reported errors with the oven temp sensor, so I replaced that with oem sensor. Now the error codes are all clear but I get an "H9" message at the end of the diagnostic run. This is not an error code as it appears at the end of the diagnostic run, and I cannot find a reference anywhere. I am still getting 50-100 degree differential even after several calibration runs. I have a straight line spark igniter, not a glower and the gas valve tests fine. Any idea what the H9 refers to other than a consumer data safety sheet?
 
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