151
OVEN
Test to do
EA3
A
NF
LF
EA2EA1
EA3
14 13 12 11 10 987654 32
19 18 17 16 15
1
EA2EA1
VG1
N
S3
N
N
SB
RESET
L
J4 J5 J1
J6
J3
J2
N
S2
N
S1
J2
J3
J6
J4
J5
J1
AmA
F
°C
J3
J4
J2
J1
16 17 18 19 20
EV1
TR
21
812345879 10
11
+
-
12 13
RPM
T
C
W
ION
BFD
F1
RE
SB
NL
14 15
V
PA
Test 1
Measure the ionization current with the multimeter set to microamp DC current placed in
series between the flame detection electrode and the cable harness (see Figure 23 and Figure 25)
Figure 23
How to remove the flame detection cable
Test 2
Measure the voltage out of the J5 socket of the flame
control board between PIN 8 and PIN 10 using the
multimeter set to VAC.Measure the voltage on the
P34-35-36 sockets of the power board using the
multimeter set to VAC. (see Figure 24 and Figure 26)
Figure 24
How to measure the power supply to the P34 socket of
the power board
Figure 25
How to connect the multimeter in series between
the ame detection cable and the ame detection
electrode