Carrier Zone Ctrl II - Page 50

Troubleshooting
Zone Ctrl II and
VAV Zone II Secondary Duct Installation and Start-up Guide CARRIER CORPORATION ©2019
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2 Insert the compressed air straw 1/4" into the controller's
High
connector.
WARNING
The compressed air can MUST be upright. It will damage the flow sensors by producing ice
crystals if the can is on its side.
3 Press the air can's trigger twice for no more than 2 seconds each time.
4 Reconnect tubing to the
High
and
Low
flow sensor tubes.