Carrier AquaEdge 19DV Operation And Troubleshooting page 32

Two-stage high-efficiency semi-hermetic centrifugal liquid chillers with pic6 controls
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ALERT
DESCRIPTION OF
CODE
ALERT TEXT
Alt-190
AHF Fault
Loss Communication with
Alt -191
AHF
*
This Alert table is not specific to 19DV chiller. References to oil
are not associated with 19DV product.
Table 16 — PIC6 Alert Codes* (cont)
CRITERION FOR TRIP
Receive a fault state from AHF
No response from AHF for 10
consecutive seconds
ACTION TAKEN BY THE
ALERT RESET METHOD
CONTROL
Automatic
Alert Relay is ON
Automatic
Alert Relay is ON
32
POSSIBLE CAUSE
Reset the AHF - if fault persists, please
determine the fault state and contact
Service
Check communication line

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