C.I.B
. UNIGAS
- M0
39135CG
28
TROUBLESHOOTING
l
=
with any control box;
s
=
with only LGB2../LMG2../LME11/LME2..
(*)
In such cases, insert the circuit SIEMENS “RC466890660” (See chapter “Electrical connections”)
CAUSE
TROUBLE
THE BURNER
DOES
N’TSTART
CONTIN
UE
WITH P
R
E
-
PURGE
DOES
N’T S
T
A
R
T
AND
LO
C
K
-OUT
DOES
N’T S
T
A
R
T
AND
REPE
ATS THE
CY
CLE
STARTS AND REPE
ATS
THE C
Y
CLE
STARTS AND LOCK
-OUT
В
THE FL
AME MONI
TOR
DEVICE DOES
N’T
GI
VE
C
O
NSENT TO STA
R
T
DOES
EN’T SWIT
CH TO
HIGH FLA
M
E
DOES
EN’T R
E
TUR
N
IN
LO
W FLA
M
E
HE SERV
O
C
O
NTR
O
L IS
L
O
CK
A
N
D
V
IB
R
A
T
E
LOC
K
-OUT DU
RING
OP
ERATI
O
N
TURN
S
OF A
ND REP
EATS
CYCLE
DURING
OP
ERATI
O
N
MAIN SWITCH OPEN
z
LACK OF GAS
z
z
MAXIMUM GAS PRESSURE SWITCH DEFECTIVE (IF
PROVIDED)
z
z
THERMOSTATS/PRESSURE SWITCHES DEFECTIVE
z
z
z
OVERLOAD TRIPPED INTERVENTION
z
AUXILIARIES FUSE INTERRUPTED
z
CONTROL BOX FAULTY
z
z
z
z
z
DEFECTIVE SERVOCONTROL (IF PROVIDED)
z
z
z
AIR PRESSURE SWITCH FAULT OR BAD SETTING
z
z
z
z
MINIMUM GAS PRESSURE SWITCH DEFECTIVE OR GAS
FILTER DIRTY
z
z
z
z
z
IGNITION TRANSFORMER FAULT
z
IGNITION ELECTRODES BAD POSITION
z
DETECTION ELECTRODE BAD POSITION
z
z
BUTTERFLY VALVE BAD SETTING
z
z
DEFECTIVE GAS GOVERNOR
z
z
z
z
GAS VALVE DEFECTIVE
z
BAD CONNECTION OR DEFECTIVE HIGH/LOW FLAME
THERMOSTAT OR PRESSURE SWITCH (IF PROVIDED)
z
z
WRONG SETTING SERVO CONTROL CAM
l
l
l
UV PROBE DIRTY OR DEFECTIVE (IF PROVIDED)
l
l
l
PHASE-NEUTRAL INVERTED
s
PHASE-PHASE SUPPLY OR PRESENCE OF VOLTAGE ON
THE NEUTRAL CONDUCTOR(*)
s
