Quantech QTC4 STYLE A Series, Installation Operation & Maintenance

Page: 8 / 164

QUANTECH
8
FORM QTC4-NM1
ISSUE DATE: 4/2/2018
TABLE OF CONTENTS (CONT'D)
Microboard (331-03478-xxx) ..........................................................................................................................98
Power Supplies and LEDs .....................................................................................................................98
Power Supply Test Points ......................................................................................................................98
Configuration Jumpers .........................................................................................................................98
Communication Ports ..........................................................................................................................100
Building Automation System (BAS) Communications ..................................................................................100
Using Communications Protocol .........................................................................................................100
E-Link or SC-EQ Interface ............................................................................................................................101
SC-EQ or E-Link BAS Communications Card ..............................................................................................103
E-Link ..................................................................................................................................................107
VSD .....................................................................................................................................................107
Program Update ...........................................................................................................................................107
Data Logging ................................................................................................................................................107
Invalid Number of Compressors Warning............................................................................................108
Invalid Serial Number Warning ............................................................................................................108
Unit Safeties .................................................................................................................................................109
Unit Safety Operation ..........................................................................................................................109
High Ambient Temp Fault ....................................................................................................................109
Low Ambient Temp Fault .....................................................................................................................109
Low Leaving Chilled Liquid Temp Fault ...............................................................................................109
VSD Communications Failure Fault ....................................................................................................109
System Safeties (Faults) .............................................................................................................................. 110
System Safety (Fault) Operation ......................................................................................................... 110
High Discharge Pressure Cutout (Software) Fault .............................................................................. 110
High Discharge Pressure Cutout (HPCO) (Hardware) Fault .............................................................. 111
Low Suction Pressure Cutout (Software) Fault ................................................................................... 111
Low Motor Current Cutout Fault .......................................................................................................... 111
High Differential Oil Pressure Cutout Fault ......................................................................................... 111
Low Differential Oil Pressure Cutout Fault .......................................................................................... 112
High Discharge Temperature Cutout Fault .......................................................................................... 112
Low Discharge Superheat Cutout Fault .............................................................................................. 112
Discharge Pressure Load Limiting/Unloading ..................................................................................... 112
Suction Pressure Load Limiting/Unloading ......................................................................................... 113
Sensor Failure Cutout Fault ................................................................................................................ 113
High Motor Temperature Cutout Fault ................................................................................................. 114
System Control Voltage Cutout Fault .................................................................................................. 114
Eductor Clog Fault ............................................................................................................................... 114
SECTION 8 - MICROPANEL ................................................................................................................................ 115
Unit Data Key ............................................................................................................................................... 118
System Data Keys 1 Through 4....................................................................................................................120
VSD Data Key ..............................................................................................................................................123
Operating Hours / Start Counter Key ...........................................................................................................124
History Key ...................................................................................................................................................125
Setpoints Key ...............................................................................................................................................132
Program Key ................................................................................................................................................134
Options Key ..................................................................................................................................................137
Date/Time and Schedule Keys .....................................................................................................................140
Manual Override Key ....................................................................................................................................143
Print Key .......................................................................................................................................................144
System Switches Key ...................................................................................................................................147