CONTROL PANEL OPERATING MANUAL - Daikin

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Faults, Problems, WarningsFaults (Equipment Protection Shutdowns)There are no Unit protection shutdown alarms; all such alarms are handled through the compressorcontrollers.Problems (Limit Alarms)The following alarms limit operation of the chiller in some way as described in the Action Taken column.Table 7, Controller Limit AlarmsDescription Occurs When: Action Taken ResetEvaporator Pump #1FaultEvaporator Pump #2FaultCondenser Pump #1FaultCondenser Pump #2FaultEntering EvaporatorWater TemperatureSensor FaultNo flow indicated for (5 sec) with Evaporator Pump #1 ONAND [the other pump is available (per the Evap PumpSP) AND has not faulted]No flow indicated for (5 sec) with Evaporator Pump #2 ONAND [the other pump is available (per the Evap PumpSP) AND has not faulted]No flow indicated for (5 sec) with Condenser Pump #1 ONAND [the other pump is available (per the Evap PumpSP) AND has not faulted]No flow indicated for (5 sec) with Condenser Pump #2 ONAND [the other pump is available (per the Evap PumpSP) AND has not faulted]Sensor fault AND leaving water reset is based on enteringwaterStart pump #2Start pump #1Start pump #2Start pump #1Reset mode isset to No ResetManualManualManualManualManual.(Reset modegoes back toEnteringWater)WarningsThe following “alarms” only generate a warning message to the operator. Chiller operation is not affected.Table 8, Controller WarningsDescription Occurs When: Action Taken ResetEntering Evaporator TemperatureSensor FaultEntering Condenser TemperatureSensor FaultLeaving Condenser TemperatureSensor FaultLiquid Line RefrigerantTemperature Sensor FaultController FunctionsD - EOMWC00905-10EN - 22/88Sensor is open or shorted Annunciation AutomaticSensor is open or shorted Annunciation AutomaticSensor is open or shorted Annunciation AutomaticSensor is open or shorted Annunciation AutomaticLeaving Water Temperature (LWT) ResetThe Active Leaving Water variable shall be set to the current Leaving Water Temperature (LWT) setpointunless modified by one of the reset methods below. (The current LWT setpoint is Cool LWT as determinedby the chiller mode.) The type of reset in effect is determined by the LWT Reset Type setpoint.Reset Type – NONEThe Active Leaving Water variable is set equal to the current LWT setpoint.Reset Type – RETURNThe Active Leaving Water variable is adjusted by the return water temperature.When the chiller mode = COOL, the Active Leaving Water variable is reset using the following parameters:
1. Cool LWT setpoint2. Max Reset Delta T setpoint3. Start Reset Delta T setpointReset is accomplished by changing the Active Leaving Water variable from the (Cool LWT setpoint) to the(Cool LWT setpoint + Max Reset Delta T setpoint) when the evaporator (return – leaving) water temperaturedelta varies from the (Start Reset Delta T setpoint) to 0.The Active Leaving Water variable is set equal to the Cool LWT setpoint if the reset signal is less than orequal to 4 mA. It is set equal to (Cool LWT setpoint + Max Reset Delta T setpoint) if the reset signal equalsor exceeds 20 mA. The Active Leaving Water variable will vary linearly between these extremes if the resetsignal is between 4 mA and 20 mA. An example of this action is shown below.(54.0°F)LWT Reset (Cool mode)(temperatures are examples only)Max Reset Delta T(10.0°F)Cool LWT Set-Point(44.0°F)0 ma4 ma20 maD - EOMWC00905-10EN - 23/88
Page 1 and 2: MICROTECH III CONTROLLERMICROTECH I
Page 3 and 4: Manufactured in an ISO Certified Fa
Page 5 and 6: Features of the Control Panel• Co
Page 7 and 8: Load LimitAn external signal from t
Page 9 and 10: General DescriptionMajor Components
Page 11 and 12: Use with On-Site GeneratorsEWWD chi
Page 13 and 14: Table 1.2. With all manual switches
Page 15 and 16: 3. Press the ACKNOWLEDGE button to
Page 17 and 18: c) After selecting this second leve
Page 19 and 20: S = Slave setpoint - Setpoint is a
Page 21: Description Default Range Type PWSt
Page 25: Compressor Faults, Problems, Warnin
Page 28 and 29: MANUAL. Of the following limits, th
Page 30 and 31: Figure 8, Field Wiring DiagramMICRO
Page 32 and 33: Figure 9 illustrates the arrangemen
Page 34 and 35: Screen DescriptionsFigure 10, Home
Page 36 and 37: Figure 11, Detail View ScreenData f
Page 38 and 39: Figure 14, View Compressor Input/Ou
Page 40 and 41: Figure 17, A Typical SETPOINT Scree
Page 42 and 43: TIMERS SetpointFigure 18, TIMERS Se
Page 44 and 45: Cooling Tower Bypass VALVE Settings
Page 46 and 47: Explanation of Tower Control Settin
Page 48 and 49: c) If LIFT was selected for fan con
Page 50 and 51: MODES SetpointsFigure 24, MODES Set
Page 52 and 53: SERVICE ScreenFigure 26, Service Sc
Page 54 and 55: Figure 28, Alarm History/Floppy Dow
Page 56 and 57: Figure 30, KeyboardThe keyboard is
Page 58 and 59: Menu Structure (Scrolled)As an alte
Page 60 and 61: Selection can then be made by using
Page 62 and 63: VIEW COMP#N (2)psiCond Press =XXXXE
Page 64 and 65: View AlarmsALARM LOG 01Descriptionh
Page 66 and 67: SET UNIT SPs (11)Max Wtr Flow Rates
Page 68 and 69: SET COMP#N (7)EWWD AutomaticVane Co
Page 70 and 71: Tower control settings can be None,
Page 72 and 73:
The stage up timer starts when the
Page 74 and 75:
4 Stage #4 ON (Temp OR Lift as appr
Page 76 and 77:
Compressor Controller Menu ScreensM
Page 78 and 79:
BAS InterfaceThe MicroTech II contr
Page 80:
Remote SWITCHSelecting SWITCH in SP
Page 83 and 84:
The MicroTech II operator interface
Page 85 and 86:
Then the system is once again evacu
Page 87 and 88:
Key: O = Performed by in-house pers
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CONTROL PANEL OPERATING MANUAL - Daikin

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