Trane VUVE Vertical Classroom Manual de Instalação Página 94
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Diagnostics
94 UV-SVN03F-EN
Table 31. Electric heat not operating (Tracer ZN520)
Probable
Cause Explanation
Normal
operation
The controller cycles electric heat on and off to meet the
unit capacity requirements.
Requested
mode: off
It is possible to communicate the operating mode (such as
off, heat, cool) to the controller. When off is communicated
to the controller, the units shuts off the electric heat.
Communicated
disable
Numerous communicated requests may disable electric
heat, including an auxiliary heat enable input and the heat/
cool mode input. Depending on the state of the
communicated request, the unit may disable electric heat.
Manual output
test
The controller includes a manual output test sequence that
verifies analog and binary output operation and associated
output wiring. However, based on the current step in the
test sequence, the electric heat may not be on. Refer to
“Manual Output Test (Tracer ZN520),” p. 92.
Diagnostic
present
A specific list of diagnostics affects electric heat operation.
For more information, see “Diagnostics,” p. 90.
Unit
configuration
The controller must be properly configured based on the
actual installed end devices and application. When the unit
configuration does not match the actual end device, the
electric heat may not work properly.
No power to
the controller
If the controller does not have power, electric heat does not
operate. For the controller to operate normally, a 24 Vac
input voltage must be applied. When the green LED is off
continuously, the controller does not have sufficient power
or has failed.
Unit wiring The wiring between the controller outputs and the electric
heat contacts must be present and correct for normal
electric heat operation. Refer to the typical unit wiring
diagrams.
ECM Motor /
Control Board
Failure
ECM controls include sophisticated fan proving / interlock
circuitry that will disable electric heat if one or more motors
are not performing normally
Hot water is
present on a
changeover
unit
On units with changeover coil and electric heat,
simultaneous operation of hydronic heat and electric heat
is not allowed.
Table 32. Fresh air damper stays open (Tracer ZN520)
Probable
Cause Explanation
Normal
operation
The controller opens and closes the fresh air damper based
on the controller’s occupancy mode and fan status.
Normally, the fresh air damper is open during occupied mode
when the fan is running and closed during unoccupied mode.
Manual output
test
The controller includes a manual output test sequence that
verifies analog and binary output operation and associated
output wiring. However, based on the current step in the test
sequence, the fresh air damper may not be open. Refer to
“Manual Output Test (Tracer ZN520),” p. 92.
Unit
configuration
The controller must be properly configured based on the
actual installed end devices and application. When the unit
configuration does not match the actual end device, the
damper may not work correctly.
Unit wiring The wiring between the controller outputs and the fresh air
damper must be present and correct for normal damper
operation. Refer to the typical unit wiring diagrams.
Table 33. Fresh air damper stays closed (Tracer ZN520)
Probable
Cause Explanation
Normal
operation
The controller opens and closes the fresh air damper based
on the controller’s occupancy mode and fan status.
Normally, the fresh air damper is open during occupied mode
when the fan is running and closed during unoccupied mode.
Warmup and
cooldown
The controller includes both a warmup and cooldown
sequence to keep the fresh air damper closed during the
transition from unoccupied to occupied. This is an attempt to
bring the space under control as quickly as possible.
Requested
mode: off
It is possible to communicate the operating mode (such as
off, heat, cool) to the controller. When off is communicated
to the controller, the unit closes the fresh air damper.
Manual output
test
The controller includes a manual output test sequence that
verifies analog and binary output operation and associated
output wiring. However, based on the current step in the test
sequence, the fresh air damper may not be open. Refer to
“Manual Output Test (Tracer ZN520),” p. 92.
Diagnostic
present
A specific list of diagnostics effects fresh air damper
operation. For more information, see “Diagnostics,” p. 90.
Unit
configuration
The controller must be properly configured based on the
actual installed end devices and application. When the unit
configuration does not match the actual end device, the
damper may not work correctly.
No power to
the controller
If the controller does not have power, the fresh air damper
does not operate. For the controller to operate normally, a
24 Vac input voltage must be applied. When the green LED
is off continuously, the controller does not have sufficient
power or has failed.
Unit wiring The wiring between the controller outputs and the fresh air
damper must be present and correct for normal damper
operation. Refer to the typical unit wiring diagrams.
UV-SVN03_.book Page 94 Thursday, January 24, 2013 5:27 PM
- Installation, Operation 1
- Important 2
- Environmental Concerns! 2
- Introduction 3
- Table of Contents 4
- UV-SVN03F-EN 5 5
- Model Number Descriptions 6
- 50/60 Hz 9
- ECM Application Notes 10
- Dimensions and Weights 11
- Receiving and Handling 18
- Pre-Installation 19
- Installation—Mechanical 20
- Location Considerations 21
- Unit Mounting 21
- Heavy Object! 21
- Subbase (Option) 22
- NOTICE: 23
- Equipment Damage! 23
- Installation—Piping 24
- Refrigerant Piping 25
- Steam Piping 25
- Over-tightening! 26
- Field Wiring! 27
- Soldering Procedures 28
- Installation—Sensors 29
- Fan Mode Switch Installation 31
- Zone Sensor Installation 31
- Wireless Sensors 32
- Associate 33
- (Model WDS only) 35
- Optional Features 36
- Sensor Operations 37
- Variables 38
- Operating Mode (Model WDS) 38
- Installation—Electrical 42
- IMPORTANT: 44
- ECM Overview and Setup 45
- Standard Adapter Board 46
- CSTI Adapter Board 46
- Safety Alert! 47
- 321 543 21 48
- Configuration Use Examples 53
- Priority / Error Display 53
- Configuration 55
- VSP Setup Examples 56
- Adapter Board 58
- Time Clock 65
- Wiring Installation (ZN520) 67
- Wiring Overview Outline 68
- General Instructions 68
- BACnet MS/TP Link 68
- Connection Wiring 69
- Transformer Recommendations 70
- Wiring Requirements 70
- Connecting Wires 70
- Power ON Check 70
- Pre-Start 71
- Tracer ZN520 Unit Startup 72
- Tracer UC400 Unit Startup 72
- General Information 72
- Fan Mode Switch Operation 72
- Tracer ZN520 Operation 72
- Tracer ZN520 Sequence of 73
- Operation 73
- (Tracer ZN520) 74
- UV-SVN03F-EN 75 75
- 76 UV-SVN03F-EN 76
- UV-SVN03F-EN 77 77
- Binary Inputs (Tracer ZN520) 78
- Binary Outputs (Tracer ZN520) 78
- UV-SVN03F-EN 79 79
- UC400 Sequence of Operation 80
- Occupied Mode (UC400) 81
- Unoccupied Mode (UC400) 81
- Occupied Standby Mode (UC400) 81
- Occupied Bypass Mode (UC400) 81
- Function (UC400) 82
- Fan Operation (UC400) 82
- Exhaust Control (UC400) 83
- Valve Operation (UC400) 83
- 84 UV-SVN03F-EN 84
- Smart Reset (UC400) 85
- Condensate Overflow (UC400) 85
- Fan Status (UC400) 85
- 86 UV-SVN03F-EN 86
- Maintenance 87
- 92 UV-SVN03F-EN 92
- Table of Diagnostics (UC400) 95
- Diagnostics Types (UC400) 95
- Troubleshooting (Wireless 96
- Controls) 96
- 100 UV-SVN03F-EN 100
- UV-SVN03F-EN 101 101
- 102 UV-SVN03F-EN 102
- Diagnostics 103
- →→ 106
- →→ 106
- that can be configured 107
- Replacing ECM Components 108
- Instructions 109
- Engine Module 109
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