23
See section 10.8
– Troubleshooting for more information on the
reset codes below, and what action is required when these
conditions are encountered.
7.3.1
– Manual Reset Codes
Message
Description
CHECK PIM/BTC II
BOARDS
Internal hardware fault
CHECK FTBUS
WIRING
Poor connection between PIM and
display
TANK TOP
ERR/OPEN/SHRT
Tank top open
Tank top short
HI LIMIT ERR/OPEN
High limit open
TANK BOT
ERR/OPEN/SHRT
Tank bottom open
Tank bottom short
FLE
Fan speed not proved, ignition
failure
67
ILK Off
79
Heater Outlet high limit tripped
91
Inlet sensor fault
92
Outlet sensor fault
93
DHW sensor fault
95
Stack sensor fault
96
Outdoor sensor fault
105
Flame detected out of sequence
106
Flame lost in Main Flame
Establishing Period (MFEP)
107
Flame lost early in run
108
Flame lost in run
109
Ignition failed
112
Pilot test flame timeout
113
Flame circuit timeout
149
Flame detected
7.3.2
– Automatic Reset Codes
#
Description
0
None
29
Burner switch turned OFF
30
Burner switch turned ON
47
Flame rod to ground leakage
49
Abnormal 24Vac voltage
50
Modulation Fault
61
Anti-short Cycle
62
Fan speed not proved
67
Interlock Off, safety circuit is open
69
Pilot test hold
78
Demand lost in run
79
Outlet high limit tripped (internal
limit)
81
Delta-T limit exceeded (30
o
F)
91
Inlet sensor fault
92
Outlet sensor fault
93
DHW sensor fault
95
Stack sensor fault
96
Outdoor sensor fault
97-99
Internal Fault
128
Fan speed failed during pre-purge
129
Fan speed failed during pre-ignition
130
Fan speed failed during ignition
131
Fan movement detected during
standby
132
Fan speed failed during run
137
Interlock failed to close, safety circuit
is open
110
Ignition failure occurred
111
Flame current below threshold
(0.8Vdc)
149
Flame detected
150, 291
Flame not detected
301-310
Interlock Off, safety circuit is open
353
Stack limit (PVC: 149
o
F, CPVC:
194
o
F, PPE: 230
o
F, SS, AL29-4C:
250
o
F)
460
LCI lost in run, safety circuit is open
614
Lead water heater was rotated
based on measured run time
