Carrier 50HCQA Installation Manual Page 88
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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88
APPENDIX A — LOCAL DISPLAY AND CCN TABLES
MODE — OPERATING MODES (cont)
ITEM EXPANSION RANGE UNITS
CCN TABLE/
S u b --- T A B L E
CCN POINT
CCN
WRITE
STATUS
DISPLA Y
WRITE
STA TUS
OAU Out side Air Unit Diagnostic OAU_DIAG
OA.RN OAU System Run Stat e 1=AUTO
2=OFF
3=TEST
OAU_RUN
OA.OP OAU Operating Mode 0=Off
1=ERV (DCV)
2=Free Cooling
3=OA Tempering
4=Defrost
5=Test
6=Ext. Mode 1
7=Ext. Mode 2
8=Ext. Mode 3
OAU_MODE
2P.DM O A U 2 --- p o s i t i o n D a m p e r Close/Open OAUDMPR
WHL OAU Wheel Speed xxx % OAUWHEEL
LAT OAU Leaving Air Temp xxx.x °F OAU_LAT
EXAT OAU Exhaust Air Temp xxx.x °F OAU_EXAT
OA.MN Minimum Outside Air CFM xxxxx CFM MINOACFM
DCV.M Min DCV Outside Air CFM xxxxx CFM MINDCVSP
OA.FS OAU OA Fan Speed xxx % OAFANSPD
A.OA Actual Outside Air CFM xxxxx CFM ACTOACFM
C.OA Command Outside Air CFM xxxxx CFM CM DOACFM
PE.OF Power Exhaust CFM Offset xxxxx CFM EXOFFSET
EX.FS OAU Exhaust Fan Speed xxx % OAUPESPD
A.EX Actual Exhaust Air CFM xxxxx CFM ACTEXCFM
C.EX Command Exhaust Air CFM xxxxx CFM CMDEXCFM
BP.SP Building Pressure Setpnt x.xx in H
2
O OAU_BPSP
BP Building Pressure x.xx in H
2
O OAU_BP
TM.LO OA Tempring Lockout Temp xx °F OATMPLOC
TM.SP OA Tempring SAT Setpoint xx °F OATMPSPT
OA.HT OAU Tempering Heater xxx % OAHEATER
ALM.1 OAU Motor Failure Alarm Off/On OAUALRM1
ALM.2 OAU Dirty Filter Alarm Off/On OAUALRM2
ALM.3 OA Low CFM Alarm Off/On OAUALRM3
ALM.4 OAU Alarm Off/On OAUALRM4
DMD.L DEMAND LIMITING DMDL
D.LMT Demand Limit In Effect No/Yes MODEDMDL
LMT.C Max Cool Stage In Effect x CSTGLIMT
LMT.H Max Heat Stage In Effect x HSTGLIMT
REDL Redline Activated No/Yes MODEREDL
SHED Loadshed Activated No/Yes MODESHED
MAX.C Max Allowed Cool Stages x MAXCSTGS
MAX.H Max Allowed Heat Stages x MAXHSTGS
( D i s p l a y T R I M ---
see Configuration)
Sensor Calibration TRIM
Space Temp Calibration --- 30 to 130 °F SPT_CAL forcible
Space Temp T rim ---30 to 30 ^F SPT_OFF forcible
Supply Air Temp Calib. ---30 to 130 °F SA T_CAL forcible
Supply Air Temp Trim ---30 to 30 ^F SAT_OFF forcible
Return Air Temp Calib. ---30 to 130 °F RAT_CAL forcible
Return Air Temp Trim ---30 to 30 ^F RAT_OFF forcible
ComfortLINK v2.X
- 48/50HC 04---28 1
- Single Package Rooftop Units 1
- SAFETY CONSIDERATIONS 2
- BASIC CONTROL USAGE 3
- Accessory Navigator Display 4
- Operation 4
- CCN Tables and Display 4
- Force Hierarchy 5
- Generic Status Display Table 5
- START-UP 6
- Condenser Fans and Motors 7
- Return--Air Filters 7
- Outdoor--Air Inlet Screens 7
- Accessory Installation 7
- Orifice Change (48HC) 7
- Gas Heat (48HC) 8
- Economizer 9
- SERVICE TEST 12
- THIRD PARTY CONTROL 13
- CONTROLS OPERATION 14
- General Operation 15
- Occupancy Determination 16
- Cooling Mode Control 18
- Staging Control 18
- Compressor Control 19
- Outdoor Fan Control 19
- Heating Mode Control 19
- Heat Relay Control 20
- Economizer Position % 21
- Fan Speed % 21
- Free Cooling 22
- Thermostat Control 22
- Space Sensor Control 22
- Unoccupied Free Cooling 22
- Power Exhaust (CV units) 22
- Power Exhaust (SAVt units) 23
- IAQ (Analog Input) 23
- IAQ (Switch Input) 24
- Fan Enable (Switch Input) 24
- Dehumidification Demand 25
- Reheat Modes 25
- Temperature Compensated Start 29
- Carrier Comfort Network (CCN) 30
- Configuration 30
- Demand Limit 30
- TROUBLESHOOTING 31
- Complete Unit Stoppage 32
- Restart Procedure 32
- Alarms and Alerts 32
- MBB --- Main Base Board 37
- Green LED 39
- Yellow LED 39
- Cooling Troubleshooting 40
- Economizer Troubleshooting 42
- Heating Troubleshooting 43
- IDM – Induced-Draft Motor 44
- “AUTO” position 44
- Phase Loss Protection 46
- Thermistor Troubleshooting 46
- CIRCUIT “B” 49
- CIRCUIT “A” 49
- Transducer Troubleshooting 50
- Forcing Inputs and Outputs 50
- MAJOR SYSTEM COMPONENTS 53
- RED LED - STATUS GREEN LED 62
- LEN (LOCAL EQUIPMENT NETWORK) 62
- YELLOW LED 62
- CCN (CARRIER COMFORT NETWORK) 62
- INSTANCE JUMPER (SET TO 1) 62
- RED LED-STATUS 66
- 48/50HC 04--14 Units — 67
- 48/50HC 17--28 Units — 68
- Central Terminal Board (CTB) 68
- Scrolling Marquee Display 70
- Accessory Navigatort Display 70
- Interface 70
- Protective Devices 72
- Field-Installed Accessories 72
- MODE — RUN STATUS 75
- MODE — RUN STATUS (cont) 76
- MODE — SERVICE TEST 78
- MODE — TEMPERATURES 78
- MODE — PRESSURES 78
- MODE — INPUTS 79
- MODE — OUTPUTS 79
- MODE — SET POINTS 79
- MODE — CONFIGURATION 80
- MODE — TIME CLOCK 85
- CCN ONLY TABLES 85
- MODE — OPERATING MODES 86
- MODE — OPERATING MODES (cont) 87
- MODE — ALARMS 89
- VFD Diagnostics 95
- Table 32 — FAULT CODES (cont) 96
- Table 33 – ALARM CODES 97
- INDICATE UNIT SETTINGS BELOW 98
- MODE — CONFIGURATION (cont) 100
- ComfortLINK v2.X 100
- ELECTRICAL 103
- TEMPERATURES 103
- PRESSURES 103
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