CleaverBrooks CFC-500 Operation, Service And Parts Manual page 303

Table 8. Falcon lockout and hold codes
81 Delta T inlet/outlet limit
82 Stack limit
83 Delta T exchanger/outlet limit
84 Delta T inlet/exchanger limit
85 Inlet/outlet inversion limit
86 Exchanger/outlet inversion limit
87 Inlet/exchanger inversion limit
88 Outlet T-rise limit
89 Exchanger T-rise limit
90 Heat exchanger high limit
91 Inlet sensor fault
92 Outlet sensor fault
93 DHW sensor fault
94 S2 (J8-6) sensor fault
95 Stack sensor fault
96 S5 (J8-11) sensor fault
97 Internal fault: A2D mismatch
98 Internal fault: Exceeded VSNSR
voltage tolerance
99 Internal fault: Exceeded 28V
voltage tolerance
100 Pressure sensor fault
101-104 RESERVED
105 Flame detected out of sequence
106 Flame lost in MFEP
107 Flame lost early in run
108 Flame lost in run
109 Ignition failed
110 Ignition failure occurred
111 Flame current lower than WEAK
threshold
112 Pilot test flame timeout
113 Flame circuit timeout
114-121 RESERVED
122 Lightoff rate proving failed
123 Purge rate proving failed
124 High fire switch OFF
125 High fire switch stuck ON
126 Low fire switch OFF
127 Low fire switch stuck ON
Table 8. Falcon lockout and hold codes
Hold/ 128 Fan speed failed during prepurge
Lockout
Hold/ 129 Fan speed failed during preignition
Lockout
130 Fan speed failed during ignition
Hold/
Lockout
Hold/ 131 Fan movement detected during standby Hold
Lockout
132 Fan speed failed during run
Hold/
133-135 RESERVED
Lockout
136 Interrupted Airflow Switch failed to close Hold
Hold/
137 ILK failed to close
Lockout
138-142 RESERVED
Hold/
Lockout
143 Internal fault: Flame bias out of range 1
Hold/
144 Internal fault: Flame bias out of range 2
Lockout
145 Internal fault: Flame bias out of range 3
Hold/
146 Internal fault: Flame bias out of range 4
Lockout
147 Internal fault: Flame bias out of range 5
Hold/
Lockout 148 Internal fault: Flame bias out of range 6
Hold 149 Flame detected
Hold
150 Flame not detected
Hold
151 High fire switch ON
Hold
Hold
152 Combustion pressure ON
Hold
Lockout
153 Combustion pressure OFF
Lockout
154 Purge fan switch ON
Lockout
155 Purge fan switch OFF
Hold
156 Combustion pressure and Flame ON
Hold/
157 Combustion pressure and Flame OFF
Lockout
158 Main valve ON
Lockout
159 Main valve OFF
Lockout
160 Ignition ON
Lockout
161 Ignition OFF
Lockout
162 Pilot valve ON
Hold
163 Pilot valve OFF
Hold
164 Block intake ON
Lockout
165 Block intake OFF
Lockout
166-171 RESERVED
172 Main relay feedback incorrect
Lockout
173 Pilot relay feedback incorrect
Lockout
174 Safety relay feedback incorrect
Hold
175 Safety relay open
Hold
176 Main relay ON at safe start check
Hold
177 Pilot relay ON at safe start check
Hold
178 Safety relay ON at safe start check
179-183 RESERVED
33
CB FALCON MODBUS COMMUNICATION
Hold/
Lockout
Hold/
Lockout
Hold/
Lockout
Hold
Hold
Lockout
Lockout
Lockout
Lockout
Lockout
Lockout
Hold/
Lockout
Hold
Hold/
Lockout
Hold/
Lockout
Hold/
Lockout
Hold/
Lockout
Hold/
Lockout
Hold/
Lockout
Lockout
Lockout
Lockout
Lockout
Lockout
Lockout
Lockout
Lockout
Lockout
Lockout
Lockout
Lockout
Lockout
Lockout
Lockout
Lockout