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  1. HVAC
    The blower works fine in low heat and will transition into high heat. It will do a cycle or two in high heat, but then when it tries the next cycle of high heat, it fires up fine, the blower comes on for maybe 30 sec, then it dies and code 41 displays (blower failed to reach 250 rpm or blower...
  2. General DIY Discussions
    I have a 355 MAV high efficiency furnace. It was installed in 1995. When I run the diagnostic test the furnace goes through the test with no errors, including the blower fan going into low and high spped mod. For some reason when the furnace calls for heat everthing looks and sounds good except...
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