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  1. #14
    Runs mechanical cooling upon start up with no attempt to operate economizer

  2. #15
    Join Date
    Jun 2006
    Location
    midwest
    Posts
    122
    Pull the access panel off the economiser hood and verify actuator operation. Also red service lite should be on on uem board. When putting in test mode and nothings working, disconnect the j6 plug on the ucp board, this way u are in control and bas is out of the picture.

  3. #16
    Join Date
    Feb 2009
    Location
    Nova Scotia, Canada
    Posts
    30
    I had no idea the economizer calibrated 3 minutes after start-up. Good to know

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