19
®
Flame has been sensed during the burner off time (term. L1-13 open) or during the purge
period for sixty (60) seconds.
A flame failure occurred during the pilot trial for ignition period.
A flame failure occurred during the main trial for ignition period.
A flame failure occurred during the main burner on period.
This message appears because of ignition cable noise. Reroute scanner wires away from
high voltage ignition cables. Check for proper spark gap or cracked porcelain. Check for
proper grounding of wiring base and power supply. Replace worn ignition cable and/or
faulty connections.
Excessive current or short circuit detected on terminals 5, 6, or 7 during PTFI, MTFI, or
Auto. The control will lockout upon sensing this condition on two consecutive cycles.
During pilot trial for ignition period, voltage sensed on terminal 7 is different from the pre-
vious cycle. (e.g.: jumper added or removed between term. 7 and 5 or 6).
Electrical noise detected on terminals L1 and L2.
A power interruption to terminals L1 and L2 has caused the control to lockout.
Applies to
EP165 and EP166 programmers only.
CHECK MESSAGES
The "Run-Check" switch has been placed in the Check position during purge and will hold
indefinitely. The firing rate motor is being driven to the high purge position.
The "Run-Check" switch has been placed in the Check position after high fire purge and
will hold indefinitely. The firing rate motor is being driven to the low fire position.
The "Run-Check" switch has been placed in the Check position during the pilot trial for
ignition period. Flame signal strength is displayed in the upper right hand position. The
control will lockout on safety only when no flame signal is sensed for a continuous 30 sec-
onds while the control is in the Check position.
The "Run-Check" switch has been placed in the Check position during the main burner on
period. and the firing rate motor is driven to the low fire position. Flame signal strength is
displayed in the upper right hand corner.
LOCKOUT STANDBY
FALSE FLAME
LOCKOUT PTFI
FLAME FAIL
LOCKOUT MTFI
FLAME FAIL
LOCKOUT AUTO
FLAME FAIL
LOCKOUT PTFI
SCANNER NOISE
LOCKOUT PURGE
SHORT CIRCUIT TERM 5,6,7
LOCKOUT PTFI
FUEL VALVE STATE CHANGE
LOCKOUT AUTO
LINE FREQUENCY NOISE DETECTED
LOCKOUT
AC POWER FAIL
CHECK PURGE
0:15
D-8 HI LIMIT
CHECK PURGE
0:45
M-D LOW LIMIT
CHECK PTFI
19
FLAME SIGNAL
CHECK AUTO
25
LOW FIRE SIGNAL
