13
PTFI: This LED is illuminated only during the pilot trial for ignition period and the stabilization
period when so equipped.
Flame: This LED is on whenever a flame signal is detected, and the control is not in a locked out
state.
Alarm: This LED flashes when an alarm condition is detected and is used as an address indicator
(see communication).
During an alarm condition, the Alarm LED is made to flash at approximately a 1 second rate. The
remaining four LEDs are illuminated as a coded sequence identifying the reason for the lockout. For
instance, for a LOCKOUT - FLAME FAIL- PTFI, the INTERLOCK, PTFI and FLAME LED’s will
all be lit steady, with the Alarm LED flashing. This remains true if power is removed and then
restored in a locked out condition.
While in the Idle or Off state, the LEDs are made to flash sequentially to show the operational status
of the control every minute. The LEDs can be tested by pressing and releasing the Reset push button,
while in the Idle or Off state.
LOCKOUT CODES
❍
= NOT LIGHTED
●
= LIGHTED
✱
= FLASHING
All MicroM chassis are shipped with a convenient peel off label that can be applied to any surface (inside cover) for future reference.
MSGN
DESCRIPTION
OP
CTRL
AIRFLOW
INTLCK
PTFI
FLAME
ALARM
DEC
HEX
6
6
Lockout Line Frequency Noise Detected
●
❍
❍
●
✱
7
7
Lockout Flame Fail - PTFI
❍
●
●
●
✱
15
0F
Lockout Fault Unknown
●
●
●
●
✱
16
10
Lockout Amplifier High Count Fail
❍
❍
❍
❍
✱
19
13
Lockout Flame Fail - MTFI
❍
❍
●
●
✱
20
14
Lockout False Flame - STANDBY
❍
●
❍
❍
✱
21
15
Lockout Intrlck Open
●
●
●
❍
✱
22
16
Lockout Intrlck Closed
❍
●
●
❍
✱
24
18
Lockout Chassis Opto
●
●
❍
●
✱
37
25
Lockout Flame Fail - AUTO
❍
●
❍
●
✱
39
27
Lockout Fuel Valve State Change
❍
❍
❍
●
✱
54
36
Lockout Check Chassis
❍
❍
❍
●
✱
55
37
Lockout Check Programmer
❍
❍
●
❍
✱
56
38
Lockout Check Amplifier
●
❍
❍
❍
✱
58
3A
Lockout Amplifier Auto Check Fail
●
❍
●
❍
✱
59
3B
Lockout Check BLOWN FUSE
●
❍
●
●
✱
76
4C
Lockout Check Scanner
●
●
❍
❍
✱