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Installation Instructions: Control Link ACC Anti-Condensate Controller System
The "Full ON" and "Full OFF" values (65°F and 25°F respectively) can be adjusted via HHT connected through
the MODBUS system.
When the temp sensor has failed, the STATUS LED will blink twice, pause, and repeat.
Note that it is possible to select the PMAC-style mode of operation without the Control Link ACC generating an
alarm. PMAC mode may only be enabled using a HHT connected through a Retail Solutions gateway.
Priority 3: DEWPOINT SENSOR FAILURE
This error occurs when the Control Link ACC is not receiving a dewpoint sensor value (either from a dewpoint
sensor directly connected to the Control Link ACC or from another sensor on the network). The Control Link
ACC will continue controlling the heater with a fallback door temperature setpoint of 59°F (15°C) until the dew-
point sensor connection is restored.
When the dewpoint sensor has failed and/or the Control Link ACC cannot find a dewpoint sensor value on the
network, the STATUS LED will blink three times, pause, and repeat.
Priority 4: FLASH/CLOCK FAILURE
A firmware or hardware error has occurred, and the Control Link ACC is unable to function. A controller in this
error state will require replacement. The STATUS LED will give one short blink, one long blink, pause, and
repeat the pattern.
Priority 5: USER CONFIG LOST
The user configuration has been corrupted. All setpoint changes have been reset to the original factory defaults.
The STATUS LED will give one long blink, one short blink, pause, and repeat the pattern.
Document Part # 026-4703 Rev 8 10-JUN-2009
Page 17 of 18
©2009 Emerson Climate Technologies Retail Solutions, Inc. This document may be photocopied for personal use.
Visit our website at http://www.emersonretailsolutions.com/ for the latest technical documentation and updates.
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