Electric Interface Board Diagnostic Chart - Frymaster 2836 Series Service And Parts Manual

1.12 Electric Interface Board Diagnostic Chart

The following diagram and charts provide ten quick system checks that can be performed using
only a multimeter.
3
6
9
12
15
K1 K2
4
10 7 1
8 5 2
11
6
12 9 3
Meter Setting
12 VAC Power
24 VAC Power
*Probe Resistance
Hi-Limit Continuity
Latch Contactor Coil
Heat Contactor Coil
*Disconnect 15-Pin harness from the computer/controller before testing the probe circuit.
2 1
5
4
8 7
11 10
14 13
K3 K4
10 7 4 1
11 8 5 2
9 6 3
12
Test
50 VAC Scale
50 VAC Scale
R X 1000 OHMS
R X 1 OHMS
R X 1 OHMS
R X 1 OHMS
Note: The sealed relays are
replaceable. If a relay fails,
the replacement part number
is 807-3932.
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) not applicable to Ultimate Electric fryers
HT (RH) indicates output from right heat relay
HT (LH) not applicable to Ultimate Electric fryers
AL (RH) indicates output (open) from right latch
relay
AL (LH) not applicable to Ultimate Electric fryers
Pin
1 of J2 3 of J2
2 of J2 Chassis
11 of J2 12 of J2
7 of J2 4 of J2
8 of J2 Chassis
9 of J2 Chassis
1-12
Pin Results
12-16 VAC
24-30 VAC
See Chart
0 - OHMS
3-10 OHMS
18-25 OHMS