© 2000 CONTRIVE • B1401|400.EN
0211
4
www.contrive.it
CYCLE
MANUAL SHUTDOWN
UNIT HAS BEEN PUT OUT OF SERVICE FROM
PUSH BUTTON. PUSH AGAIN TO RESTORE.
IGNITION
1
ST
SAFETY TIME. BURNER IGNITION TRIAL
WITH PILOT GAS VALVE OPEN.
TIMER SHUTDOWN
BURNER HAS BEEN TURNED OFF BY
OPTIONAL INTERNAL TIMER.
PILOT BURNER ON
PILOT GAS VALVE IS OPEN, BURNER ON
UNTIL SHUTDOWN, LOCKOUT OR FAILURE
THERMOSTAT SHUTDOWN
BURNER HAS BEEN TURNED OFF BY LOCAL
THERMOSTAT AT TERMINAL 22.
POSTCOMBUSTION
WAITING FOR FLAME QUENCHING AFTER
LOCKOUT OR SHUTDOWN REQUEST.
PREPURGE
PURGE OF COMBUSTION CHAMBER OR MIN
TIME FOR ILLEGAL FLAME PROVING.
POSTPURGE
PURGE OF COMBUSTION CHAMBER, SHOWN
TOGETHER WITH ASSOCIATED CODE.
LOCKOUTS
STANDBY
WAITING FOR RESET WHEN PROGRAMMED
FOR STANDBY MODE AT POWER-ON.
FLAME LOSS
FLAME QUENCHING DURING NORMAL
BURNER OPERATION.
ILLEGAL DETECTION
PARASITE FLAME DETECTION DURING PRE-
PURGE, POSTPURGE OR POSTCOMBUSTION.
CONTROL BOARD COM FAILURE
EXPANSION CONTROL BOARD IS MISSING OR
NOT WORKING PROPERLY.
IGNITION FAILURE
NO FLAME DETECTED AT THE END OF
IGNITION TRIAL, 1
ST
SAFETY TIME.
RESETABLE FAILURES
IGNITION DEVICE FAILURE
IGNITION DEVICE UNPLUGGED, DEFECTIVE
OR NOT WORKING PROPERLY.
MISSING GROUND JOINT | SOFT JUMP
POOR SPARK RETURN PATH (I.E.: BAD
GROUND CONNECTION TO BURNERS HEAD).
GAS VALVE FAILURE
GAS VALVE(S) UNPLUGGED, DEFECTIVE OR
NOT WORKING PROPERLY.
STRONG EMI | CONFIG ERROR
ELECTRO MAGNETIC INTERFERENCE ABOVE
ADMISSIBLE LIMIT, CONFIGURATION ERROR.
OUTPUT RELAYS FAILURE
SHORT CIRCUIT ON OUTPUT RELAY CONTACT
LOADS DISCONNECTED BY SAFETY RELAY.
TIMEBASE FAILURE
MISMATCH BETWEEN 1
ST
AND 2
ND
INTERNAL
TIMEBASE GENERATORS.
CONTROL BOARD ERROR
WRONG OPERATION OF CONTROL BOARD,
ILLEGAL COMMAND
SYSTEM WATCHDOG
MICROPROCESSOR ISN’T OPERATING
PROPERLY.
NON RESETABLE FAILURES
PUSH BUTTON FAILURE
PUSH BUTTON FOUND CLOSED AT SELF TEST.
FAILURE OR AVOID PUSHING DURING TEST.
MASTER SAFETY RELAY FAILURE
SHORT CIRCUIT ON SAFETY RELAY CONTACT.
OUTPUT RELAYS WILL DISCONNECT LOADS.
SYSTEM ERROR
PROGRAM ERRORS, CORRUPTION IN
FIRMWARE MEMORY.
