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Carrier 30GN040-420 operating instructions Ð Keypad Directory cont STATUS cont, Test

Models: 30GN040-420

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TEST

Table 9 Ð Keypad Directory (cont)

STATUS (cont)

SUBFUNCTION	KEYPAD ENTRY	DISPLAY	COMMENT

10 OUTPUTS (cont)		EXVB X	EXVB Percent Open**
		HGBA X²	Hot Gas Bypass Relay Circuit A (on/off)**
		HGBB X²	Hot Gas Bypass Relay Circuit B (on/off)**
		MMA X²	Motormaster A Output Percent**
		MMB X²	Motormaster B Output Percent**

		TEST

To use Test function, LOCAL/ENABLE-STOP-CCN switch must be in STOP position. To operate a test, scroll to desired test.

Then, press to start test. Press to stop test.

SUBFUNCTION	KEYPAD ENTRY			DISPLAY	COMMENT

1 OUTPUTS				OUTPUTS	Test Outputs
				8.8.8.8.8.8.8.8	Display Check
				ALMR X	Energize Alarm Relay K3 (on/off)
				FRA1 X	Energize Fan Relay A1 K1 (on/off)
				FRA2 X	Energize Fan Relay A2 K2 (on/off)
				FRB1 X	Energize Fan Relay B1 K4 (on/off)
				FRB2 X	Energize Fan Relay B2 K5 (on/off)
				CHWP X²	Energize Cooler Water Pump K6 (on/off)
				LSVA X	Energize Liquid Line Solenoid A (on/off)**
				LSVB X	Energize Liquid Line Solenoid B (on/off)**
				EXVA X	Enter Desired EXVA Position (percent)**
				EXVB X	Enter Desired EXVB Position (percent)**
				HGBA X²	Energize Hot Gas Bypass Relay A (on/off)**
				HGBB X²	Energize Hot Gas Bypass Relay B (on/off)**
				MMA X²	Enter Desired Motormaster A Output Signal (percent)**
				MMB X²	Enter Desired Motormaster B Output Signal (percent)**

To toggle between inputs (Yes/No) Press:		(no) or		(yes)

During compressor test, compressors start and run for 10 seconds. Compressor service valves and liquid line valves must be open. Energize crankcase heaters 24 hours prior to performing compressor tests.

SUBFUNCTION	KEYPAD ENTRY	DISPLAY	COMMENT

2 COMPRESSORS AND		COMP	Compressor and Unloader Test
UNLOADERS		COMP	Compressor and Unloader Test
UNLOADERS
		CPA1 X	Test Compressor A1 (on/off)
		CPA2 X²	Test Compressor A2 (on/off)**

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Carrier 30GN040-420 operating instructions Ð Keypad Directory cont STATUS cont, Test

Contents

30GN040-420 Controls, Operation, and TroubleshootingACCESSORY UNLOADER INSTALLATION Keypad and Display ModuleMAJOR SYSTEM COMPONENTS SAFETY CONSIDERATIONSGENERAL Table 1 Ð Unit Sizes and Modular CombinationsFig. 1 Ð 30GN Control Panel 040-110Unit Shown LEGEND CCN Ð Carrier Comfort NetworkTB Ð Terminal Block Keypad and Display Module Also Called HSIO OPERATION DATA Fig. 3 Ð Compressor Ground Fault ModuleCompressor Protection Control Module CPCS Table 3 Ð Thermistor and Transducer LocationsTable 4A Ð Capacity Control Steps Table 4A Ð Capacity Control Steps, 040-070cont Table 4A Ð Capacity Control Steps, 040-070cont LOADING SEQUENCE A LOADING SEQUENCE A LOADING SEQUENCE A UNIT LOADING SEQUENCE A LOADING SEQUENCE A A1*,B1 LOADING SEQUENCE A A1,kB1 LOADING SEQUENCE A LOADING SEQUENCE A LOADING SEQUENCE A LOADING SEQUENCE A LOADING SEQUENCE A LOADING SEQUENCE A Keypad and Display Module Also Called HSIO Head Pressure ControlPumpout Fig. 4 Ð Keypad and Display ModuleTable 5 Ð Condenser Fan Sequence Table 6 Ð Keypad and Display Module Usage Table 7 Ð Functions and SubfunctionsTable 8 Ð Accessing Functions and Subfunctions Table 9 Ð Keypad Directory STATUSSUBFUNCTION 6 TEMPERATURETable 9 Ð Keypad Directory cont STATUS cont KEYPAD ENTRYKEYPAD ENTRY Table 9 Ð Keypad Directory cont STATUS contSUBFUNCTION DISPLAYTable 9 Ð Keypad Directory cont STATUS cont TESTTable 9 Ð Keypad Directory cont TEST cont SCHEDULESERVICE Table 9 Ð Keypad Directory cont SCHEDULE contTable 9 Ð Keypad Directory cont SERVICE cont SUBFUNCTION 3 ALARM/ALERTTable 9 Ð Keypad Directory cont HISTORY KEYPAD ENTRYTable 9 Ð Keypad Directory cont SET POINT Example 1 Ð Reading Alarm Codes Example 2 Ð Reading Current Operating ModesTable 10 Ð Operational and Mode Display Codes Chilled Fluid Set Point Example 3 Ð Using Test FunctionReset Set Points Pulldown Set PointExample 4 Ð Reading and Changing Example 5A Ð External ResetTable 11 Ð Reset Amounts Chilled Fluid Set PointFig. 5 Ð Cooling Return Fluid Reset Externally Powered ResetExample 5C Ð Using Return Fluid Temperature Reset Example 5B Ð 4 to 20 mA and Internally orÐ Switch Fig. 6 Ð Cooling External Temperature ResetÐ Power COMM Ð Communications BusTable 12 Ð Service Functions Fig. 8 Ð 4-20mA Cooling Temperature ResetExample 6 Ð Changing Reset Type Externally poweredExample 8 Ð Setting Time of Day and Day of Week To Disable Demand LimitExample 7B Ð Using Demand Limit 4-20mA First Log On As Shown in TableFig. 9 Ð 4-20mA Demand Limiting To change a conguration enter the new conguration Table 14 Ð Adjustable Field CongurationsTable 13 Ð Factory Conguration Keystrokes and press while on the correct congurationExample 9 Ð Using the Schedule Function Example 9 Ð Using the Schedule Function contTROUBLESHOOTING Example 10 Ð Holiday Schedule FunctionFig. 10 Ð Sample Time Schedule Cooling load satised Table 16 Ð Alarm and Alert Codes Table 16 Ð Alarm and Alert Codes cont Fig. 11A Ð 24-VSafety Circuit Wiring Code 30 Reset input failure 4 to 20 mA alert Loss of communication can be attributed to a grounded transformer with a secondary voltage of 21 vac supplying the PSIO, DSIO-LV,or 4 IN/4 OUT the 12.5-vactrans- former supplying the DSIO-EXVmodule, or the 24-vactrans- former supplying PS1 for the transformers. These transformers should not be grounded, or serious damage to controls can result. Check to be sure the transformers are not grounded Code 42 Cooler freeze protection alarm Electronic Expansion Valve EXV Fig. 12 Ð Electronic Expansion Valve EXVFig. 13 Ð EXV Cable Connections to EXV Driver Module, DSIO EXV6.Check operation of EXV TEMPERATURE TEMPERATURE 1.Disconnect transducer from the system ALL UNITS AND FLUID-SIDETEMPERATURE FLUID-SIDETEMPERATURE THERMISTOR T2COMPRESSOR SUCTION GAS TEMPERATURE Fig. 15 Ð Thermistor LocationsTRANSDUCER REPLACEMENT Control Modules Fig. 20 Ð Processor Module PSIO ACCESSORY UNLOADER INSTALLATIONFig. 19 Ð Sensor Bus Wiring Communications Fig. 21 Ð Low-VoltageRelay Module DSIOInstallation Fig. 22 Ð 4 In/4 Out Module SIOTable 19 Ð Troubleshooting Table 20 Ð Standard and Accessory UnloadersPress 3.Wire in the solenoid valvespad display reads OUTPUTS. Press until display The keypad LCD will displaySee Table Fig. 30 Ð Remote Reset from 4-20mA Signal Switch InputsFig. 26 − Demand Limit Ð 4-20mA Signal Externally PoweredREPLACING DEFECTIVE PROCESSOR MODULE InstallationFig. 34 Ð Remote Alarm Fig. 35 Ð InterlocksPage Copyright 1995 Carrier Corporation