Interface Board Diagnostic Chart - Frymaster 8196203 Installation, Operation, Service, And Parts Manual

7.10

Interface Board Diagnostic Chart

The following diagram and charts provide ten quick system checks that can be performed using only
a multimeter.
Diagostic LEDs
AL HI HTCMP24V HT HI AL
K1 K2
Left Left
Latch Heat
Relay Relay
J1
6
12 9 3
8 5 2
11
4
10 7 1
Test Points
J1 Left J2 Right
NOTE – When testing the test points on J1
and J2 test use the illustration above dis-
regarding any silkscreened numbers on
the board depicting the location of Pin 1.
Pin 1 is located in the bottom right corner of
Both J1 and J2. These test points are ONLY
for RE Series boards with J1 and J2 plugs on
the front of the board.
Meter Setting
12 VAC Power
24 VAC Power
*Probe Resistance (RH)
*Probe Resistance (LH)
High-Limit Continuity (RH)
High-Limit Continuity (LH)
Latch Contactor Coil (RH)
Latch Contactor Coil (LH)
Heat Contactor Coil (RH)
Heat Contactor Coil (LH)
* Disconnect 15-Pin harness from the computer/controller before testing the probe circuit.
J3
3 2 1
6 5
4
8 7
9
12
11 10
15 13
14
K3 K4
Right
Right
Heat Latch
Relay Relay
J2
9 6 3
12
8 5 2
11
7 4 1
10
PN 106-6811
Test
50 VAC Scale
50 VAC Scale
R X 1000 OHMS
R X 1000 OHMS
R X 1 OHMS
R X 1 OHMS
R X 1 OHMS
R X 1 OHMS
R X 1 OHMS
R X 1 OHMS
Diagnostic LED Legend
CMP indicates power from 12V transformer
24 indicates power from 24V transformer
HI (RH) indicates output (closed) from right
latch relay
HI (LH) indicates output (closed) from left
latch relay
HT (RH) indicates output from right heat
relay
HT (LH) indicates output from left heat relay
AL (RH) indicates output (open) from right
latch relay
AL (LH) indicates output (open) from left
latch relay
Pin
3 of J2 1 of J2
2 of J2 Chassis
11 of J2 10 of J2
1 of J1 2 of J1
9 of J2 6 of J2
6 of J1 9 of J1
8 of J2 Chassis
5 of J1 Chassis
7 of J2 Chassis
4 of J1 Chassis
7-13
Pin Results
12-16 VAC
24-30 VAC
See Chart
See Chart
0 - OHMS
0 - OHMS
3-10 OHMS
3-10 OHMS
18-25 OHMS
18-25 OHMS