Quantech QTC4 STYLE A Series Installation Operation & Maintenance page 8

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
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TABLE OF CONTENTS (CONT'D)
FORM QTC4-NM1
ISSUE DATE: 4/2/2018
QUANTECH