Trinity
│
Installation and Operation Instructions
Tft Series
68
Table 16-3
Hold and Lockout Codes
Code
Description
Note
68
ILK ON
N/A
69
Pilot test hold
Hold
70
Wait for leakage test completion
Hold
71
Input power frequency mismatch
Lockout
72-77
RESERVED
78
Demand lost in run
Hold
79
Outlet high limit
Hold
80
DHW high limit
Disabled
81
Delta T limit
Hold / Lockout
82
Stack limit
Lockout
83
Delta T exchanger/outlet limit
Disabled
84
Delta T inlet/exchanger limit
Disabled
85
Inlet/Outlet inversion limit (See Table 17-1)
Hold
86
Exchanger/outlet inversion limit
Disabled
87
Inlet/exchanger inversion limit
Disabled
88
Outlet T-Rise limit (See Table 17-1)
Lockout
89
Exchanger T-rise limit
Disabled
90
Heat exchanger high limit
Disabled
91
Inlet sensor fault
Hold
92
Outlet sensor fault
Hold
93
DHW sensor fault
Hold
94
Header sensor fault
Hold
95
Stack sensor fault
Hold
96
Outdoor sensor fault
Hold
97
Internal fault: A2D mismatch
Lockout
98
Internal fault: Exceeded VSNSR voltage tolerance
Lockout
99
Internal fault: Exceeded 28V voltage tolerance
Lockout
100
Pressure sensor fault
Hold
101
Exchanger sensor fault
Disabled
102-104
RESERVED
105
Flame detected out of sequence
Hold / Lockout
106
Flame lost in MFEP
Lockout
107
Flame lost early in run
Lockout
108
Flame lost in run
Lockout
109
Ignition failed
Lockout
110
Ignition failure occurred
Hold
111
Flame current lower than WEAK threshold
Hold
112
Pilot test flame timeout
Lockout
113
Flame circuit timeout
Lockout
114-115
RESERVED
116
Wait for OK to Run
Disabled
117
Flap valve condensate fault
Disabled
118
Controller interaction system fault
Hold
119
Controller interaction communications fault
Hold
120
Flap valve backflow fault
Disabled
121
Flap valve fault
Disabled
122
Light off rate proving failed
Lockout
123
Purge rate proving failed
Lockout
124
High fire switch OFF
Hold