Controls, Start-Up, Operation, Service and ... - Climayoreo

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DAYLIGHT SAVINGS START (DS.ST) — This submenu configures the start date and time for daylight savings. Daylight Savings Start Month (DS.STST.MN) — This is the start month for daylight savings time. The numbers 1 to 12 correspond to the months of the year (e.g., January = 1). Daylight Savings Start Week (DS.STST.WK) — This is the start week of the month for daylight savings. The week can be set from 1 to 5. Daylight Savings Start Day (DS.STST.DY) — This is the start day of the week for daylight savings. The day can be set from 1 to 7 (Sunday=1, Monday=2, etc.). Daylight Savings Minutes To Add (DS.STMIN.A) — This is the amount of time that will be added to the time clock for daylight savings. DAYLIGHT SAVINGS STOP (DS.SP) — This submenu configures the end date and time for daylight savings. Daylight Savings Stop Month (DS.SPSP.MN) — This is the stop month for daylight savings time. The numbers 1 to 12 correspond to the months of the year (e.g., January = 1). Daylight Savings Stop Week (DS.SPSP.WK) — This is the stop week of the month for daylight savings. The week can be set from 1 to 5. Daylight Savings Stop Day (DS.SPSP.DY) — This is the stop day of the week for daylight savings. The day can be set from 1 to 7 (Sunday=1, Monday=2, etc.). Daylight Savings Minutes To Subtract (DS.SPMIN.S) — This is the amount of time that will be removed from the time clock after daylight savings ends. TROUBLESHOOTING The scrolling marquee display shows the actual operating conditions of the unit while it is running. If there are alarms or there have been alarms, they will be displayed in either the Table 70 — Time Clock Menu ITEM EXPANSION RANGE CCN POINT DEFAULT TIME TIME OF DAY HH.MM Hour and Minute 00:00 TIME DATE MONTH,DATE,DAY AND YEAR MNTH Month of Year multi-text strings MOY DOM Day of Month 0-31 DOM DAY Day of Week multi-text strings DOWDISP YEAR Year e.g. 2003 YOCDISP SCH.L LOCAL TIME SCHEDULE PER.1 PERIOD 1 PER.1DAYS DAY FLAGS FOR PERIOD 1 Period 1 only PER.1DAYSMON Monday in Period YES/NO PER1MON Yes PER.1DAYSTUE Tuesday in Period YES/NO PER1TUE Yes PER.1DAYSWED Wednesday in Period YES/NO PER1WED Yes PER.1DAYSTHU Thursday in Period YES/NO PER1THU Yes PER.1DAYSFRI Friday in Period YES/NO PER1FRI Yes PER.1DAYSSAT Saturday in Period YES/NO PER1SAT Yes PER.1DAYSSUN Sunday in Period YES/NO PER1SUN Yes PER.1DAYSHOL Holiday in Period YES/NO PER1HOL Yes PER.1OCC Occupied from 00:00 PER1_OCC 00:00 PER.1UNC Occupied to 00:00 PER1_UNC 24:00 Repeat for periods 2-8 HOL.L LOCAL HOLIDAY SCHEDULES HD.01 HOLIDAY SCHEDULE 01 HD.01MON Holiday Start Month 0-12 HOL_MON1 HD.01DAY Start Day 0-31 HOL_DAY1 HD.01LEN Duration (Days) 0-99 HOL_LEN1 Repeat for holidays 2-30 DAY.S DAYLIGHT SAVINGS TIME DS.ST DAYLIGHT SAVINGS START DS.STST.MN Month 1 - 12 STARTM 4 DS.STST.WK Week 1 - 5 STARTW 1 DS.STST.DY Day 1 - 7 STARTD 7 DS.STMIN.A Minutes to Add 0 - 90 MINADD 60 DS.SP DAYLIGHTS SAVINGS STOP DS.SPSP.MN Month 1 - 12 STOPM 10 DS.SPSP.WK Week 1 - 5 STOPW 5 DS.SPSP.DY Day 1 - 7 STOPD 7 DS.SPMIN.S Minutes to Subtract 0 - 90 MINSUB 60 90 current alarm list or the history alarm list. The Service Test mode allows operation of the compressors, fans, and other components to be checked while the unit is not operating. Complete Unit Stoppage — There are several conditions that can cause the unit to not provide heating or cooling. If an alarm is active which causes the unit to shut down, diagnose the problem using the information provided in the Alarms and Alerts section on page 106, but also check for the following: • Cooling and heating loads are satisfied. • Programmed schedule. • General power failure. • Tripped control circuit transformers circuit breakers. • Tripped compressor circuit breakers. • Unit is turned off through the CCN network. Single Circuit Stoppage — If a single circuit stops incorrectly, there are several possible causes. The problem should be investigated using information from the alarm and alert list. Service Analysis — Detailed service analysis can be found in Tables 71-74 and Fig. 17. Restart Procedure — Before attempting to restart the machine, check the alarm list to determine the cause of the shutdown. If a shutdown alarm for a particular circuit has occurred, determine and correct the cause before allowing the unit to run under its own control again. When there is problem, the unit should be diagnosed in Service Test mode. The alarms must be reset before the circuit can operate in either Normal mode or Service Test mode. Humidi-MiZer ® Troubleshooting — Use the unit scrolling marquee or a CCN device to view the status display and the diagnostic display for information concerning cooling operation with the Humidi-MiZer system. Check the Current
Alarms and Alarm History for for any unresolved alarm codes and correct. Verify Humidi-MiZer configuration settings are correct for the site requirements. If alarm conditions are corrected and cleared, then operation of the compressors, fans, and Humidi-MiZer valves may be verified by using the Service Test mode. See page 35. In addition to the Cooling Service Analysis (Table 71), see the Humidi-MiZer Service Analysis (Table 72) for more information. Thermistor Troubleshooting — The OAT, SAT, RAT, CCT, T55, T56, and T58 temperature sensors use 10K thermistors. Resistances at various temperatures are listed in Tables 75 and 76. The DTT uses an 86K thermistor. See Table 77. The RGTA uses a 5K thermistor. See Tables 78 and 79. THERMISTOR/TEMPERATURE SENSOR CHECK — A high quality digital volt-ohmmeter is required to perform this check. 1. With the unit powered down, remove the terminal strip of the thermistor being diagnosed from the appropriate control board (MBB-J8 or RCB-J6). Connect the digital LEGEND CB — Circuit Breaker TXV — Thermostatic Expansion Valve Table 71 — Cooling Service Analysis 91 ohmmeter across the appropriate thermistor terminals in the terminal strip. 2. Using the resistance reading obtained, read the sensor temperature from the appropriate sensor table. 3. To check thermistor accuracy, measure the temperature at the thermistor location with an accurate thermocouple– type temperature measuring instrument. Insulate thermocouple to avoid ambient temperatures from influencing reading. The temperature measured by the thermocouple and the temperature determined from the thermistor resistance reading should be within 5° F (3° C) if care was taken in applying thermocouple and taking readings. If a more accurate check is required, unit must be powered down and thermistor removed and checked at a known temperature (freezing point or boiling point of water) by measuring the resistance of the thermistor with the terminal strip removed from the control board. With the terminal strip plugged back into the control board and the unit powered up, compare the temperature determined from the resistance measurement with the value displayed by the control in the Temperatures menu using the scrolling marquee display. PROBLEM CAUSE REMEDY Compressor and Fan Will Not Power failure. Call power company. Start. Fuse blown or circuit breaker tripped. Check CB1, CB2, and CB3. Replace fuse or reset circuit breaker. Disconnect off. Power disconnect. Compressor time guard to prevent short cycling. Check using ComfortLink scrolling marquee. Thermostat or occupancy schedule set point not calling for Cooling. Check using ComfortLink scrolling marquee. Outdoor temperature too low. Check Compressor Lockout Temperature (MC.LO) using ComfortLink scrolling marquee. Active alarm. Check active alarms using ComfortLink scrolling marquee. Compressor Cycles (Other Than Insufficient line voltage. Determine cause and correct. Normally Satisfying Thermostat). Active alarm. Check active alarms using ComfortLink scrolling marquee. Compressors Operates Unit undersized for load. Decrease load or increase of size of unit. Continuously. Thermostat or occupancy schedule set point too low. Reset thermostat or schedule set point. Dirty air filters. Replace filters. Low refrigerant charge. Check pressure, locate leak, repair evacuate, and recharge. Condenser coil dirty or restricted. Clean coil or remove restriction. Excessive Head Pressures. Loose condenser thermistors. Tighten thermistors. Dirty condenser coil. Clean coil. Refrigerant overcharge. Recover excess refrigerant. Faulty TXV. 1. Check TXV bulb mounting and secure tightly to suction line and insulate. 2. Replace TXV (and filter drier) if stuck open or closed. Condenser air restricted or air short cycling. Determine cause and correct. Restriction in liquid tube. Remove restriction. Condenser Fans Not Operating. No Power to contactors. Fuse blown or plug at motor loose. Excessive Suction Pressure. High heat load. Check for sources and eliminate Faulty TXV. 1. Check TXV bulb mounting and secure tightly to suction line and insulate. 2. Replace TXV (and filter drier) if stuck open or closed. Refrigerant overcharged. Recover excess refrigerant. Suction Pressure Too Low. Dirty air filters. Replace air filters. Low refrigerant charge. Check for leaks, repair, and recharge. Faulty TXV. 1. Check TXV bulb mounting and secure tightly to suction line and insulate. 2. Replace TXV (and filter drier) if stuck open or closed. Insufficient evaporator airflow. Check belt tension. Check for other restrictions. Temperature too low in conditioned area (low returnair temperature). Reset thermostat or occupancy schedule.
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Controls, Start-Up, Operation, Serv
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WARNING What to do if you smell gas
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and the ENTER keys until the desire
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START-UP IMPORTANT: Do not attempt
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Table 4 — Fan Performance — 48P
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AIRFLOW (cfm) Table 10 — Fan Perf
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AIRFLOW (Cfm) LEGEND Table 18 — F
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AIRFLOW (cfm) LEGEND Bhp — Brake
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HIGH-EFFICIENCY MOTORS Nominal Maxi
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2. Under the Setpoints menu, set th
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would use Period 2 and set days Sat
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there is a loss of communication be
Page 39 and 40: and when ON, the control sets a cap
Page 41 and 42: System Mode Test — When the syste
Page 43 and 44: Table 31 — Unit Configuration ITE
Page 45 and 46: SETTING UP THE SYSTEM Machine Contr
Page 47 and 48: High SST Alert Delay Time (H.SST)
Page 49 and 50: Table 36 — Cool/Heat Set Point Of
Page 51 and 52: Table 38 — Run Status Cool Displa
Page 53 and 54: To use Demand Limiting, select the
Page 55 and 56: Size 050, 055, 060 Contactor OFM(s)
Page 57 and 58: Whenever the outdoor ambient temper
Page 59 and 60: Demand Level Low Heat Off Offset (L
Page 61 and 62: Limit Switch Low Temp (SW.L.T) —
Page 63 and 64: STAGE Table 49 — IGC LED Indicato
Page 65 and 66: Table 50 — Static Pressure Contro
Page 67 and 68: Table 53 — Dirty Filter Switch Po
Page 69 and 70: NOTE: If the user wishes to disable
Page 71 and 72: the economizer modulates when attem
Page 73 and 74: P = K * BP.P * (error) I = K * BP.I
Page 75 and 76: its smoke. Closing the economizer (
Page 77 and 78: Table 57 — Indoor Air Quality Con
Page 79 and 80: Table 58 — Humidity Configuration
Page 81 and 82: The default sensor is the return ai
Page 83 and 84: TEMPERATURE COMPENSATED START LOGIC
Page 85 and 86: Sensor Trim Configuration — The T
Page 87 and 88: SUPPLY FAN VFD CONFIGURATION — Th
Page 89: REMOTE SWITCH LOGIC CONFIGURATION (
Page 93 and 94: Transducer Troubleshooting — The
Page 95 and 96: Table 75 — 10K Thermistor vs Resi
Page 97 and 98: TEMP RESISTANCE (F) (Ohms) -25 98,0
Page 99 and 100: PRESSURE (PSIG) Table 80 — Suctio
Page 101 and 102: Table 81 — Discharge Pressure Tra
Page 103 and 104: Table 82 — Auto View of Run Statu
Page 105 and 106: Table 84 — Cooling Information Di
Page 107 and 108: equalize compressor oil levels. If
Page 109 and 110: Table 91 — Alert and Alarm Codes
Page 111 and 112: T072 (Evaporator Discharge Reset Se
Page 113 and 114: This alarm will disable mechanical
Page 115 and 116: This is the reverse of the Pressuri
Page 117 and 118: 117 a48-8408 Fig. 19 — Typical Po
Page 119 and 120: OD ENTHALPY SWITCH LOW REMOTE OCCUP
Page 121 and 122: Fig. 23 — Typical Electric Heat U
Page 123 and 124: 123 Fig. 25 — Typical Gas Heat Se
Page 125 and 126: 125 Fig. 27 — Component Arrangeme
Page 127 and 128: ACCSY — Accessory ACC’Y — Acc
Page 129 and 130: Table 93 — Rooftop Control Board
Page 131 and 132: Table 96 — Control Expansion Modu
Page 133 and 134: LEGEND IAQ — Indoor Air Quality V
Page 135 and 136: the motor position to be configured
Page 137 and 138: TIME EWT LWT SETP Run Status Servic
Page 139 and 140: Fig. 37 — Door Latch Fig. 38 —
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SUPPLY FAN AND POWER EXHAUST MOTOR
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Routine cleaning of coil surfaces i
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Saturated Discharge Temperature (de
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Gas System Adjustment (48P Only) GA
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APPENDIX A — LOCAL DISPLAY TABLES
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APPENDIX B — CCN TABLES (cont) ST
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APPENDIX B — CCN TABLES (cont) ST
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APPENDIX B — CCN TABLES (cont) SE
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APPENDIX B — CCN TABLES (cont) MA
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APPENDIX B — CCN TABLES (cont) MA
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TESTACTC TESTCOOL TESTFANS TESTHEAT
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APPENDIX C — UNIT STAGING TABLES
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* 41 for Supply Fan Motor VFD, 42 f
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Fig. B — VFD Keypad START UP WITH
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Upload All Parameters — To upload
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To replace the main fan for frame s
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ALARM CODE ALARM NAME IN PANEL 2001
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APPENDIX E — MODE SELECTION PROCE
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CONTROLS SET POINT AND CONFIGURATIO
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