Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 040-420 specifications scribed in m H and r;lFl sections on page

Models: 040-420

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scribed in m H and r;lFl sections on page 38.

8.Reinstall all 6 wire connectors and the green ground wire.

9.Carefully check all wiring connections before restoring power.

10.Verify the LOCAL/ENABLE-STOP-CCN switch is in STOP position

11.Restore control power. Verify the red and green lights on top of PSI0 and front of each DSIO module re- spond as described in Control Modules section on page 64. The keypad and display module @IS10 or LID) should also begin its rotating display.

12.Using the keypad and display module, press [p-&q,to verify that the software version number matches the ER (engineering requirement) number shown on the PSI0 label.

13.Press [qnSRVC to verify that the 6 factory configuration

codes (CODE 1 through CODE 6) exactly match the codes listed for this unit model on the component ar- rangement label diagram on the control box door. If they are different or are all zeros, reenter the 6 codes. If any changes are required, the PSI0 display becomes

blank and reconfigures itself after pressing the H key

while displaying CODE 6. The display returns in ap- proximately 15 seconds.

NOTE: Codes with leading zeros in the configuration will be displayed starting with the first number greater than zero.

14.Press nn4 sRvc to verify each item is configured as needed

for this particular installation. Table 9 shows the fac- tory configuration code default settings. Table 9 also shows the service replacement code default settings which are used if no model number was specified when or- dering the replacement PSI0 module. It is strongly sug-

gested that the Start-Up Checklist for Flotronic’” II Chiller Systems (completed at time of original start-up) be used at this time to verify and/or reprogram the various op- tions and configurations required for this job.

15.After completing the configuration steps outlined above, restore main power and perform a unit test as de-

scribed in m H and r;lFl sections on page 38.

16, Complete this procedure and restore chiller to normal operation by returning the LOCAL/ENABLE-STOP- CCN switch to desired position.

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Carrier 040-420 specifications scribed in m H and r;lFl sections on page

Contents

ACCESSORY UNLOADER INSTALLATION CONTENTSSAFETY CONSIDERATIONS 040-420Table 1 - Unit Sizes and Modular Combinations GENERALMAJOR SYSTEM COMPONENTS DsroiLv Compressor Protection Control Module CPCS Table 2 - LOCAL/ENABLE-STOP-CCNSwitch Positions and Operation Table 3 - Thermistor and Transducer LocationsControl Steps, OPERATION DATATable 4A - Capacity Table 4A - Capacity Control Steps, 040-070cant 060A\~**HzTable 4A - Capacity Control Steps, 040-070cant “‘“G Hzylf,t oy&ya08Aqy ,y A;.$Aiti A4l&pi’&Page A;;:;H Wtf2Z$’ AlttBitt BittA’tt A;;;#Amrox $-t&Z3“B’p ~,;~~J“A:tkA2’i3BI~ Page hwrox Bitt AlPtlBl’“Att l”l’ B1 ttBitt A2.py&t3g A&t$$V B;$+~l*;;# ~i~~~~ BB’!J‘-J-&W~’ CKEL 86p Hz Page Table 4D - Capacity Control Steps, 225, 250,280 hwroxJG SEQUENCE UNITLOAC 4G SEQUENCEf& Hz Table 5 - Condenser Fan Sequence Table 5 - Condenser Fan Sequence cant Table 6 - Keypad and Display Module Usage Keypad and Display Module Also Called HSIOFig. 3 - Keypad and Display Module Table 8 - Accessing Functions and Subfunctions Table 7 - Functions and SubfunctionsTable 9 - Keypad Directory STATUS Table 9 - Keypad Directory cant STATUS cant SUBFUNCTION 10 OUTPUTS TESTTable 9 - Keypad Directory cant STATUS cant DISPLAYTable 9 - Keypad Directory cant TEST cant SCHEDULESERVICE Table 9 - Keypad Directory SCHEDULE cantat Clt cl Table 9 - Keypad Directory cant SERVICE cordCltt ct lTable 9 - Keypad Directory cant SET POINTTable 10 - Operationat and Mode Display Codes Example 1 -Reading Alarm Codesp-jq Example 2 - Reading Current Operating Modes Chilled Water Set Point Example 3 -Using Test FunctionExample 4 - Reading and Changing f73c= -- / Example 5 -Using Return Water Temperature ResetFig. 4 - Cooling Return Water Reset Fig. 5 - Cooling External Temperature Reset Example 6 - Changing Reset Type8- 16 ? Table 11 -Service Functions _ ‘-+pFig. 7 - 4-20mA Cooling Temperature Reset Demand Limiting Example 8 - Setting Time of Day and Day of WeekFig. 8 - 4-20mA Table 12 - Factory Configuration Keystrokes Table 13 - Adjustable Field ConfigurationsExample 9 - Using the Schedule Function Example 9 continued next pageExample 10 - Holiday Schedule Function Example 9 - Using the Schedule Function cant‘EYo Fig. 9 - Sample Time ScheduleComplete Unit Stoppage - Complete unit stop TROUBLESHOOTINGTypical Stoppage Faults and Reset Types Table 14 - Alarm Codes Possible causes of failure Code 30 Reset input failure 4 to 20 mA CPCS Fig. IOA - 24-VSafety Circuit Wiringi2G7 ’ Sl32MP TNANZ24VAC IlEO2Plug LEGENDLow Voltage TransformerC G F Fig. 12 - EXV Cable Connections to 1 Electronic Expansion ValveFig. 11 - Electronil c Expansion Valve EXV EXV Driver Module, DSIO EXVCircuit A -Thermistor T7, Suction Pressure Trans ppTT - Suction Pressure Transducer LEGEND D P T - Discharge Pressure TransducerOil Pressure Transducer T - Thermistor NumberFig. 15 - Thermistors Fig. 14 - Thermistor LocationsCircuits A and B, Lead Compressor Only SUCTIONFig. 16 - Pressure Transducer TEMP:;fTURE Page Page Fig. 18 - Module Address Selector Switch LocationsControl Modules %o-693 Fig. 19 - Sensor Bus Wiring Communications1 $i 1 !;i fL.w--6%2COMM Fig. 22 - 4 In/4 Out Module SIOTroubleshooting TableInstallation ACCESSORY UNLOADER INSTALLATIONTable 18 - Standard and Accessory Unloaders 13 6 y Fig. 23 - Accessory Unloader Control Wiring 69080-110SO/SO Hz and 130 60 Hz ‘. \3.Wire in the solenoid valves 4368 WIRINGFig. 26B - Demand Limit - Two External Switch k367Fig. 30 - Remote Reset from 4-20mA Signal Fig. 27 - Demand Limit - 4-20mA SignalExternally Powered Fig. 28 - Demand Limit - 4-20mA Signalu2 TB-5 InstallationFig. 35 -Remote Alarm ~,. $$scribed in m H and r;lFl sections on page Page Copyright 1994 Carrier Corporation