York YPAL 050 User Manual
JOHNSON CONTROLS
10
FORM 100.50-NOM6 (1207)
TABLE OF CONTENTS
Return Fan Pressure Transducer ......................................................................................154
Discharge Pressure Transducer ........................................................................................154
Building Pressure Transducer ...........................................................................................154
Suction Pressure Transducer ............................................................................................155
Humidity Sensors ...............................................................................................................155
CO
2
Sensor ..........................................................................................................................156
Furnace Status Input ..........................................................................................................156
FAULTS AND LOCKOUTS .......................................................................................................................160
Light Emitting Diode ...........................................................................................................160
Alarm Codes ........................................................................................................................160
Alarm Trouble Shooting .....................................................................................................163
Refrigerant System Alarm Codes (01, 02, 03, 04, 09, 10, 11, 12) ................................163
Low Pressure Cutout Alarm (09, 10, 11, 12) .................................................................164
Limit Switch Alarms (13, 14, 15) ...................................................................................164
Gas Heating Alarms (16, 17, 18) ....................................................................................164
Space Temperature Sensor Alarm (19) ........................................................................164
Supply Air Temperature Sensor Alarm (20) .................................................................165
Return Air Temperature Sensor Alarm (21) .................................................................165
Outdoor Air Temperature Sensor Alarm (22) ...............................................................165
Dirty Filter Switch Alarm (23) ........................................................................................165
Supply Fan Air Proving Switch (24) .............................................................................165
Supply Fan Air Proving Switch Closed Alarm (25) .....................................................165
Microelectronics Failure Alarm (26) .............................................................................165
Microelectronics Failure Alarm (27) .............................................................................165
Supply Fan Overload Alarm (28) ...................................................................................165
Outdoor Humidity Sensor Alarm (29) ...........................................................................166
Return Humidity Sensor Alarm (30) .............................................................................166
IAQ (CO2) Sensor Alarm (31) ........................................................................................166
Time Clock Error Alarm (32) ..........................................................................................166
Space Temperature Offset Alarm (33) ..........................................................................166
CV/VAV Input Alarm (34) ................................................................................................166
Low Voltage Alarm (35) ..................................................................................................166
Smoke Purge Mode Alarm (36) .....................................................................................166
High Duct Static Pressure Alarm (37) ..........................................................................166
Supply Air Temperature Cooling Alarm (38) ................................................................167
Supply Air Temperature Heating Alarm (39) ................................................................167
Economizer Minimum Position Alarm (40) ..................................................................167
Space Temperature Trending Alarm (41) .....................................................................167
Duct Static Low Pressure Alarm (42) ...........................................................................167
Hot Water Coil Freeze Alarm (43) .................................................................................167