Manual 2100-749
Page
3 of 68
Maintenance & Troubleshooting .............................45
Standard Maintenance Procedures ................................. 45
8301-089 Outdoor Temperature/Humidity Sensor ........... 48
8301-089 Sensor Connections............................... 48
8301-089 Outdoor Temperature Sensor
Troubleshooting .................................................... 49
8301-089 Humidity Sensor Test Value Outputs ....... 51
8301-089 Outdoor Humidity Sensor
Troubleshooting .................................................... 51
8620-296
Supply Air Sensor/Return Air Sensor/Mixed
Air Sensor/Suction Sensor/Liquid Sensor/Freeze Sensor ....... 53
8301-057 Blower Status Switch/Dirty Filter Switch ............. 54
Compressor Solenoid .................................................... 55
Compressor Solenoid Test Procedures ..................... 55
8612-064 Dust (Particulate) Sensor Control Board .......... 56
8612-064 Control Board Output Signal Not
Responsive ........................................................... 56
8301-091 Dust (Particulate) Sensor .............................. 57
Variable Speed Blower/Condensate Fan .......................... 58
Maintenance ........................................................ 58
LED Warning/Status Codes ..................................... 59
Modbus Troubleshooting ............................................... 60
Alarm Index ................................................................. 63
I/O Layout.................................................................... 67
FIGURES
Figure 1
TEC-EYE Display and Interface ........................ 6
Figure 2
TEC-EYE Connection to Unit Control ................ 6
Figure 3
Quick Menu Icons .......................................... 7
Figure 4
Cool and Heat Setpoints ................................. 9
Figure 5
MEGA-TEC Air Paths and Refrigeration Circuits ... 9
Figure 6
Unit Air Path Information ............................... 9
Figure 7
Last 24 Hour Tracking .................................. 10
Figure 8
A/C Circuit Measurements ............................. 10
Figure 9
Software Version .......................................... 11
Figure 10
Executing Self Test ...................................... 11
Figure 11
Restoring Factory Default Settings ................. 12
Figure 12
Restoring Factory Default Settings –
Remove USB Device .................................... 12
Figure 13
Clearing All Alarms ...................................... 13
Figure 14
Clearing Alarm Logs and Counters ................. 13
Figure 15
Changing Zone ............................................. 14
Figure 16
Adjusting Return Air Temperature Sensor .......... 14
Figure 17
Cooling (with Economizer) ............................ 15
Figure 18
Cooling (without Economizer) ........................ 16
Figure 19
Heating ....................................................... 16
Figure 20
Adjusting Cooling Differentials ...................... 16
Figure 21
Adjusting Heating Differentials ...................... 17
Figure 22
Overriding EEV Output.................................. 17
Figure 23
Electronic Expansion Valve (EEV) and
Service Tool ................................................. 17
Figure 24
Adjusting Suction Sensor/Transducer
Pressure Values ........................................... 18
Figure 25
Voltage to Pressure: Suction Pressure
Transducer .................................................. 18
Figure 26
Adjusting Suction Temperature Sensor Values ... 19
Figure 27
Putting Blower Output into Override Mode ....... 19
Figure 28
Dirty Filter Switch and Blower Status Switch .. 20
Figure 29
Verifying Differential Airflow Status ................ 20
Figure 30
Dirty Filter Switch and Filter Indicator Light ... 21
Figure 31
Verifying Filter Light Status ........................... 22
Figure 32
Overriding Fliter Light Output ........................ 22
Figure 33
Enabling/Disabling High Sensible or
Balanced Climate Operation .......................... 23
Figure 34
Enabling Fan Override .................................. 23
Figure 35
Adjusting Discharge/Liquid Transducer
Pressure Values ........................................... 24
Figure 36
Voltage to Pressure: Discharge/Liquid
Pressure Transducer ..................................... 24
Figure 37
Adjusting Discharge/Liquid Temperature Input .. 25
Figure 38
Condenser Fan Liquid/Discharge Pressure
Setpoint ........................................................ 25
Figure 39
8201-169 Compressor Control Module ............. 27
Figure 40
Adjusting Compressor Delays ........................ 28
Figure 41
Verifying Compressor Output Status ............... 28
Figure 42
Overriding Compressor Outputs ..................... 29
Figure 43
Damper Override .......................................... 29
Figure 44
Dust Sensor ................................................. 30
Figure 45
Verifying Dust Sample Output Status ............. 30
Figure 46
Overriding Dust Sample Output ..................... 30
Figure 47
Adjusting Dust Sensor Alarm Setpoint .............. 31
Figure 48
W180 Damper Blades .................................. 31
Figure 49
Damper Blade Position ................................. 32
Figure 50
Damper Switch ............................................ 32
Figure 51
Outdoor Temperature Sensor ......................... 33
Figure 52
Outdoor Humidity Sensor .............................. 33
Figure 53
Mixed Air Temperature Sensors ..................... 34
Figure 54
Economizer Setup ........................................ 34
Figure 55
Economizer Setup – Dry Bulb Control .............. 35
Figure 56
Economizer Setup – TempHum Control ............ 35
Figure 57
Economizer Setup – Enthalpy Control ................ 35
Figure 58
Supply Air Temperature Sensor...................... 36
Figure 59
Emergency Cool − Orphan Mode .................... 37
Figure 60
Adjusting Return Air Alarm Settings ............... 37
Figure 61
Verifying Electric Heat Output Status ............. 38
Figure 62
Overriding Electric Heat Output ..................... 38
Figure 63
Electric Reheat Dehumidification .................. 38
Figure 64
Dehumidification Control (°F) ........................ 39
Figure 65
Unit Disable Option...................................... 40
Figure 66
Verifying Damper Power Output Status ........... 40
Figure 67
Overriding Damper Output ............................ 40
Figure 68
Serial/Model Number Configuration ............... 40
Figure 69
MEGA-TEC Model Nomenclature ................... 42
Figure 70
Sensors and Peripheral Devices ..................... 46
Figure 71
Supply and Return Air Sensors ...................... 47
Figure 72
8301-089 Sensor Electrical Connections
and DIP Switches ........................................ 48
Figure 73
8301-089 Sensor Terminal Connections ....... 48
Figure 74
8301-089 Sensor: Temperature Probe
Troubleshooting ........................................... 49
Figure 75
8301-089 DIP Switch/Output Configuration...... 51
Figure 76
8301-089 Sensor: Humidity Probe
Troubleshooting ........................................... 51
Figure 77
8301-057 Air Differential Switch .................. 54
Figure 78
Compressor Solenoid Location ....................... 55
Figure 79
8612-064 Dust Sensor Alarm Board .............. 56
Figure 80
Fan Terminals .............................................. 58
Figure 81
PLC Communication Wires ............................ 60
Figure 82
Expansion Module Communication Wires ........ 60
Figure 83
Blower/Condenser Fan Communication Wires .. 60
Figure 84
Communication Wires in Terminal Block ......... 61
Figure 85
DIP Switch Location ..................................... 61
Figure 86
Correct DIP Switch Settings ............................. 61
Figure 87
TEC-EYE Blower 1 Screen............................. 61
Figure 88
TEC-EYE Condenser Fan 1 Screen ................. 62
Figure 89
Ventilation Airflow Paths ............................... 66
Figure 90
I/O Layout ................................................... 67
Figure 91
I/O Layout ................................................... 68
TABLES
Table 1
TEC-EYE Menu Structure ................................ 7
Table 2
LC6000/TEC-EYE Passwords (Defaults) ............... 7
Table 3
Unit Status Messages ..................................... 8
Table 4
Software Versioning Guide ............................ 11
Table 5
Unit Specific Superheat Setpoints ................. 19
Table 6
Rated Airflow ............................................... 20
Table 7
Indoor Blower Performance ........................... 20
Table 8
Maximum ESP of Operation:
Electric Heat Only ........................................ 20
Table 9
Blower Speed Settings.................................. 23
Table 10
Condenser Fan Nominal Speed ...................... 25
Table 11
Economizer Default Settings ......................... 36
Table 12
Cooling Capacity Limitation .......................... 39
Table 13
W180 Cooling Pressures ............................... 44
Table 14
8301-089 Sensor: Temperature/Resistance ...... 50
Table 15
8301-089 Sensor: Humidity/mA ................... 52
Table 16
8620-296 Sensor: Temperature/
Resistance Curve J ....................................... 53
Table 17
8301-091 Sensor: Dust/Volts ........................ 57
Table 18
Blower/Condenser Fan Troubleshooting........... 59
Table 19
Blower/Condenser Fan Motor Flash Codes ....... 59
Table 20
Modbus Device Communication Wires ............ 60