30
Table 9:
LOCKOUT CODE EXPLANATION:
NO
FAULT
POSSIBLE REMEDY
1
MAIN MCU INPUT DIAG FAULT
Initial power diagnostic failure. Make sure inputs and outputs are in the proper state at power on.
2
LOCAL RESET
User initiated manual reset or faulty reset switch.
3
CAB_FAULT
Air Prove [terminal 14] signal did not prove at the end of ignition safety time or loss of Air Prove signal during burner opera-
tion
4
SUPERVISORY MCU INPUT DIAG
FAULT
“System detected voltage on terminal 16, 17, 18, or 19 at the wrong time or voltage is not present when needed. Check wir-
ing and make sure the system is operating on a single line phase (50/60Hz)”
5
RESET LIMIT EXCEEDED
Remote reset button pressed more than 5 times in 15 minutes. User should address lockout condition. Reset functionality
will be re-established in a few minutes.
6
NOT USED
7
SPI COMMUNICATION FAULT
Reset the system to continue normal operation. Contact distributor/factory if error persists.
8
REMOTE RESET
User pressed remote reset or erratic/bouncy remote switch.
9
NOT USED
10
MAIN PROGRAM SEQ FAULT
Replace control. Contact distributor/factory.
11
RAM TEST
Replace control. Contact distributor/factory.
12
SUPV PROGRAM SEQ FAULT
Replace control. Contact distributor/factory.
13
INPUT READING FAULT
Please check wiring and make sure the system is operating on a single line phase (50/60Hz)
14
TIMER2 FAULT
Replace control. Contact distributor/factory.
15
CPU TEST FAIL
Replace control. Contact distributor/factory.
16
FLAME LOSS PTFI
Check scanner sighting and confirm that the pilot is established during PTFI. Check fuel delivery system.
17
CHECK WIRING FAULT
“System detected voltage on terminal 16, 17, 18, or 19 at the wrong time or voltage is not present when needed. Check wir-
ing and make sure the system is operating on a single line phase (50/60Hz)”
18
SAFETY RELAY FAULT
Replace control. Contact distributor/factory.
19
FUEL VALVE OPEN FAULT
Check wiring for POC. Fuel valves may not be fully closed.
20
FLAME LOSS MTFI
Check scanner sighting and confirm that the main flame is established during MTFI. Check fuel delivery system.
21
SAFETY RELAY WELDING FAULT
Replace control. Contact distributor/factory.
22
SUPV SELF-TEST
Replace control. Contact distributor/factory.
23
SUPV CS ROM FAIL
Replace control. Contact distributor/factory.
24
FLAME LOSS AUTO
Check wiring. Check scanner. Check fuel delivery system
25
SUPV RAM CHECK FAIL
Replace control. Contact distributor/factory.
26
SUPV INTERNAL ERROR
Replace control. Contact distributor/factory.
27
FLAME DETECTED SHUTDOWN MODE
False flame detected after the permissible afterburn period. Check boiler and fuel delivery system.
28
NOT USED
29
SUPV TEMP RANGE FAULT
Ambient temperature below -40oC or more than 70oC
30
ROM FAILURE
Replace control. Contact distributor/factory.
31
NOT USED
32
CHECK MODE TIMEOUT
Check mode expiration window (30 minutes) elapsed.
33
STANDBY FALSE FLAME
False flame detected during Standby state. Check wiring. Check scanner.
34
NOT USED
35
SW WDT RESET
Internal software reset by Microcontroller. Contact distributor/factory if error persists.
36
SW RESET
Internal software reset by Microcontroller. Contact distributor/factory if error persists.
The following list provides error code explanations to help people in the field respond more effectively to issues that arise.