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CONTENTS (cont)
Dehumidification and Reheat . . . . . . . . . . . . . . . . . . . . . . 69
• OPERATION
• OPERATION
Temperature Compensated Start. . . . . . . . . . . . . . . . . . . 72
Alert Limit Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Sensor Trim Configuration. . . . . . . . . . . . . . . . . . . . . . . . . 75
Discrete Switch Logic Configuration . . . . . . . . . . . . . . . 75
Display Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Remote Control Switch Input . . . . . . . . . . . . . . . . . . . . . . 76
Hot Gas Bypass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Space Temperature Offset . . . . . . . . . . . . . . . . . . . . . . . . . 77
TIME CLOCK CONFIGURATION . . . . . . . . . . . . . . . . . . . . 77
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Complete Unit Stoppage . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Single Circuit Stoppage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Service Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Restart Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Humidi-MiZer Troubleshooting. . . . . . . . . . . . . . . . . . . . . 79
Thermistor Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . 79
Transducer Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . 79
Forcing Inputs and Outputs . . . . . . . . . . . . . . . . . . . . . . . . 92
Run Status Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
• MODE TRIP HELPER
• SOFTWARE VERSION NUMBERS DISPLAY TABLE
Alarms and Alerts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
MAJOR SYSTEM COMPONENTS. . . . . . . . . . . . . . . . . . 103
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Factory-Installed Components . . . . . . . . . . . . . . . . . . . . 103
Accessory Control Components . . . . . . . . . . . . . . . . . . 125
SERVICE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Service Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Evaporator Fan Performance Adjustment . . . . . . . . . 132
Evaporator Fan Coupling Assembly . . . . . . . . . . . . . . 132
Evaporator Fan Service and Replacement . . . . . . . . 133
Belt Tension Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . 133
Evaporator-Fan Motor Replacement . . . . . . . . . . . . . . 133
Condenser-Fan Adjustment . . . . . . . . . . . . . . . . . . . . . . . 133
Four-Inch Filter Replacement . . . . . . . . . . . . . . . . . . . . . 134
Power Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Refrigerant Charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Thermostatic Expansion Valve (TXV) . . . . . . . . . . . . . 134
Gas Valve Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Main Burners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Replacement Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
APPENDIX A - LOCAL DISPLAY TABLES . . . . . . . . 143
APPENDIX B - CCN TABLES. . . . . . . . . . . . . . . . . . . . . 153
APPENDIX C - VFD INFORMATION . . . . . . . . . . . . . . 168
APPENDIX D - MODE SELECTION
PROCESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
APPENDIX E - UPC OPEN CONTROLLER. . . . . . . . 178
MOTORMASTER V CONTROL . . . . . . . . . . . . . . . . 190
INDEX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
UNIT START-UP CHECKLIST. . . . . . . . . . . . . . . . . . . . . CL-6
(CCN) System. . . . . . . . . . . 73
®
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can
Page
be hazardous due to system pressure and electrical compo-
nents. Only trained and qualified service personnel should in-
stall, repair, or service air-conditioning equipment. Untrained
personnel can perform the basic maintenance functions of re-
placing filters. Trained service personnel should perform all
other operations.
When working on air-conditioning equipment, observe pre-
cautions in the literature, tags and labels attached to the unit,
and other safety precautions that may apply. Follow all safety
codes. Wear safety glasses and work gloves. Use quenching
cloth for unbrazing operations. Have fire extinguishers avail-
able for all brazing operations.
Before performing service or maintenance operation on
unit turn off and lock off main power switch to unit.
Electrical shock can cause personal injury and death.
Shut off all power to this equipment during installation
and service. The unit may have an internal non-fused
disconnect or a field-installed disconnect. Note that the
unit may also be equipped with a convenience outlet,
that this outlet is wired to the line side of the unit-
mounted disconnect and will remain hot when the
disconnect in the unit is off. There is a separate fuse/
disconnect for the convenience outlet.
Puron
refrigerant (R-410A) systems operate at higher
®
pressures than standard R-22 systems. Do not use R-22 ser-
vice equipment or components on Puron refrigerant equip-
ment. If service equipment is not rated for Puron
refrigerant, equipment damage or personal injury may
result.
This unit uses a microprocessor-based electronic control
system. Do not use jumpers or other tools to short out com-
ponents or to bypass or otherwise depart from recom-
mended procedures. Any short-to-ground of the control
board or accompanying wiring may destroy the electronic
modules or electrical components.
1. Improper installation, adjustment, alteration, service,
or maintenance can cause property damage, personal
injury, or loss of life. Refer to the User's Information
Manual provided with this unit for more details.
2. Do not store or use gasoline or other flammable va-
pors and liquids in the vicinity of this or any other
appliance.
What to do if you smell gas:
1. DO NOT try to light any appliance.
2. DO NOT touch any electrical switch, or use any phone
in your building.
3. IMMEDIATELY call your gas supplier from a neigh-
bor's phone. Follow the gas supplier's instructions.
4. If you cannot reach your gas supplier call the fire
department.
2
WARNING
CAUTION
CAUTION
WARNING
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