York YCAS0130 manual Micro Panel Contents

FORM 201.19-NM1 (204)

TABLE OF CONTENTS (CONT’D)

SECTION 8 - MICRO PANEL CONTENTS

CHILLERLER CONTROL PANEL
PROGRAMMING AND DATA ACCESS KEYS			122
DISPLAY AND STATUS INFORMATION KEYS ....			122
ON / OFF ROCKER SWITCH			122
PROGRAM & SETUP KEYS			122
1. INTRODUCTION & PHYSICAL DESCRIPTION 123
1.1	General		123
1.2	Keypad & Display		123
1.3	Unit (chiller) ON/OFF Switch		124
1.4	Microprocessor Board		124
1.5 Ancillary Circuit Boards			124
1.6	Circuit Breakers		125
1.8 Transformers			125
1.9	Motor Protection Modules		125
1.10		EMS/BAS Controls	128
1.11 Microprocessor Board Layout			130
1.12		Logic Section Layout	131
1.13 Anti-Recycle Timer			132
1.14 Anti-Coincidence Timer			132
1.15		Evaporator Pump Control	132
1.16		Compressor Heater Control	132
1.17		Evaporator Heater Control	132
1.18		Pumpdown (EEV) Control	132
1.19 Alarms			133
1.20		Run Status (chiller)	133
1.21		Lead / Lag Compressor Selection	133
1.22		Economizer Solenoid Control	134
2. STATUS KEY: GENERAL STATUS MESSAGES &
FAULT WARNINGS			136
2.1	General		136
2.2	General Status Messages		136
2.3	Unit Warnings		137
2.4 Anticipation Control Status			138
2.5	Unit Fault Status Messages		139
2.6	System Fault (SAFETY) status		140
2.7	Printout on Fault Shutdown		143
3. DISPLAY KEYS & OPTION SWITCHES			144
3.1	General		144
3.2	Chilled Liquid Temps key		144
3.3	System # Data Keys		145
3.4 Ambient Temp Key			145
3.5 % Motor Current key			146

3.6	Operating Hrs / Start Counter key	146
3.7	Options key &	146
3.8	Funtion Key	148
4. PRINT KEYS		149
4.1	General	149
4.2	Oper Data Key	149
4.3	Operating Data – Software Version	149
4.4	Operating Data – Remote Printout	151
4.5	History Key	152
4.6	Fault History Data – Local Display
	Messages	152
4.7	Fault History Data – Remote Printout	156
5. ENTRY KEYS		157
5.1	General	157
5.2	Numerical Keypad	157
5.3	Enter Key	157
5.4	Cancel Key	157
5.5	KEYS	157
6. SETPOINTS KEYS & CHILLED LIQUID
CONTROL		158
6.1	General	158
6.2	Chilled Liquid Temperature Control	158
6.3	Local Cooling Setpoints Key	162
6.4	Remote cooling setpoints Key	162
7. CLOCK KEYS		163
7.1 GENERAL		163
7.2 SET TIME KEY		163
7.3 set schedule / holiday key		164
7.4	Manual Override key	165
8. PROGRAM KEY		166
8.1	General	166
8.2	Program Key – User Programmable Value ..	166
8.3	Programming "Default" Values	170
8.4	Electronic Expansion Valve	172
8.5	EEV Operation	173
8.6 EEV Programming		175
8.7	EEV Troubleshooting	176
8.8	Condenser Fan Control	177
8.9	Service Mode: Unit Setup	179
8.10 Sensor Calibration Charts		185
8.11 Control Inputs/Outputs		186
8.12 ISN Control		189

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