5370596-YIM-C-0518
Johnson Controls Ducted Systems
59
Charging The Unit
Charge unit by weight using name plate data or use charging tables.
Table 32: ZT037 Charging Table
Table 31: Ignition Control Flash Codes
Flashes
Fault Conditions
Check
Steady On
Control Failure
Control
Heartbeat
Normal Operation
1
Not Applicable
2
Pressure Switch Stuck Closed
Pressure Switch
3
Pressure Switch Failed To Close
Venter Pressure Switch Vent Blocked
4
Limit Switch Open
Main Limit
AUX Limit
5
Flame Present With Gas Off First Stage Gas Valve
Energized With W1 Off Second Stage Gas Valve
Energized With First Stage Gas Valve Off
Gas Valve
6
Ignition Lockout
Gas Flow Gas Pressure Gas Valve Flame Sensor
Steady Off
No Power Or Control
Failure
24VAC or Control
Air Flow
Indoor Db/Wb
Outdoor
DB
Suction
Pressure
Suction
Temp.
Liquid
Pressure
Liquid
Temp.
Delta T
Db
Compressor
Amps
300 Cfm/Ton
80/62
75
134
57
259
77
-25
7.6
85
133
56
302
87
-26
8.1
95
133
54
345
96
-26
8.6
300 Cfm/Ton
80/67
75
134
58
258
77
-25
7.6
85
137
57
303
87
-24
8.0
95
139
56
347
97
-23
8.5
300 Cfm/Ton
80/72
75
135
60
258
77
-25
7.5
85
140
59
303
87
-23
8.0
95
146
58
348
97
-20
8.4
300 Cfm/Ton
75/62
75
128
53
258
77
-23
7.6
85
129
52
301
86
-22
8.1
95
129
52
344
96
-22
8.6
400 Cfm/Ton
80/62
75
140
62
261
77
-23
7.9
85
141
61
304
87
-23
8.3
95
143
60
347
97
-22
8.8
400 Cfm/Ton
80/67
75
141
63
261
77
-23
7.8
85
144
62
305
87
-22
8.3
95
146
60
349
97
-21
8.8
400 Cfm/Ton
80/72
75
143
64
261
77
-22
7.8
85
146
62
306
87
-20
8.3
95
149
60
351
97
-19
8.7
400 Cfm/Ton
75/62
75
134
58
259
77
-21
7.8
85
136
57
303
87
-20
8.3
95
138
56
346
96
-19
8.8
