
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 Airow 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 Dehumidication .................. 38
Figure 64 Dehumidication 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 Conguration ............... 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 Conguration
...... 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 Airow 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 Specic Superheat Setpoints ................. 19
Table 6 Rated Airow............................................... 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