FORM QWC3-NM1
ISSUE DATE: 11/20/2020
SECTION 7 – UNIT CONTROLS
QUANTECH
124
See Condenser Fan Control in SECTION 8 – UNIT
OPERATION for more information.
The fifth message displays current as sensed by the op-
tional current feedback circuitry. The display reads out
in amps along with the DC feedback voltage from the
module. Current is calculated by:
225A x Actual Volts
5 Volts
Individual displays will be present for each system, if
CURRENT FEEDBACK ONE PER SYSTEM is pro-
grammed under the OPTIONS key. Combined com-
pressor current for each system is displayed.
Oper Data Quick Reference List
The following table is a quick reference list for infor-
mation available under the OPER DATA key.
TABLE 10 - OPERATION DATA
Leaving & Chilled Liquid Temps
Ambient Air Temperature
System 1 Discharge & Suction Pressure
*System X Accumulated Hours
*System X Accumulated Starts
Load and Unload Timers
Cooling Demand Steps
(Return Chilled Liquid Control Only)
Temp Rate & Temp Error
(Leaving Chilled Liquid Control Only)
Lead System Indicator
Evaporator Heater Status
Evaporator Water Pump Status
Active Remote Control
Current Feedback One Per Unit
*System X Compressors Status
*System X Run Time
*Sys X LLSV & HGSV Status
*System X Condenser Fan Stage
Current Feedback One Per System
(This message is not applicable
to a QWC3 chiller.)
LD22072
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