Heater control unit malfunction - JeepForum.com
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post #1 of 3 Old 02-27-2014, 06:13 PM Thread Starter
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Heater control unit malfunction

Hi, i had to replace my heater control unit recently and during the install i heard a hissing sound and when i'd finished the fans wont turn on which wasn't a problem before.
Does anyone know how to fix it or whats wrong

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post #2 of 3 Old 02-27-2014, 06:15 PM
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Check fuses. No burning smell right?
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post #3 of 3 Old 02-27-2014, 06:39 PM
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Unplug the blower motor resistor connection and look at it and pull the heater/dash harness apart and check it out too.

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