Johnson Controls DSH024C Series Installation Operation & Maintenance page 6

SECTION 2 - STARTUP AND OPERATION ..........................................................................................................39
Checking Superheat and Subcooling .................................................................................................... 39
Startup (Cooling) ...................................................................................................................................40
Microprocessor Controller .............................................................................................................................. 41
Temperature Sensors ............................................................................................................................41
USB Port ...............................................................................................................................................41
LCD Display ..........................................................................................................................................41
Safety Monitoring ..................................................................................................................................41
Low Ambient ..........................................................................................................................................41
Anti-Short Cycle Delay (ASCD) Protection ............................................................................................ 41
Fan Delays ............................................................................................................................................41
Nuisance Trip Protection and Three Strikes .......................................................................................... 41
Lead-Lag ...............................................................................................................................................41
Condensate Overflow Switch ................................................................................................................ 42
Operation ...............................................................................................................................................42
SECTION 3 - MAINTENANCE AND SERVICE ......................................................................................................43
Evaporator and Condenser Coils ................................................................................................................... 43
Refrigerant Circuits ........................................................................................................................................ 43
Blowers .......................................................................................................................................................... 43
Drive Belts ..................................................................................................................................................... 43
Filters ..............................................................................................................................................................43
APPENDIX: WIRING DIAGRAMS ..........................................................................................................................45
R-410A QUICK REFERENCE GUIDE ....................................................................................................................51
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FORM 145.32-IOM5
ISSUE DATE: 04/08/2019