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FAN CYCLING QUICKLY

steve_29
steve_29 Member Posts: 185
in THE MAIN WALL
Make sure the filters are clean.

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  • ricK_10
    ricK_10 Member Posts: 23
    FAN CYCLING QUICKLY

    TROUBLESHOOTING A HOT AIR FURNACE THE FAN COMES ON AT ABOUT 150 AND SHUTS OFF AT 100. THE CONTROL IS MAKING FAN CYCLE TO QUICKLY, BUSINESS OWNER INSTALLED OWN DUCT WORK IN BUILDING FROM A RENOVATION PROJECT. THIS IS SET UP FOR AC WITH A FAN RELAY, WILL CHECK ON BLOWER SPEED.
    IF THIS IS SET ON LOWER SPEED AND PROBLEM STILL OCCURS WHAT SHOULD NEXT STEP BE????? REPLY ASAP.
  • joe_14
    joe_14 Member Posts: 138
    cycling



    do you have the proper size duct for the amout of heat you are trying to move. and do you have the correct amout of return air. sounds like you have a distribution problem.

    have a proffessional look at duct system.


    good luck
    joeg.
  • jim lockard
    jim lockard Member Posts: 1,059
    rise

    Check air temp in at return /check air temp out at the supply BEFORE the A/C coil. Look on the nameplate of the furnace should be a line that reads maxium tempture rise thru furnace rise will be somewhere between 40 and 80 degrees F depending upon furnace.
    If your furnace is not in spec. you will need to take corrective action. Best Wishes J.Lockard
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