Diagnostic led legend – Frymaster BIPH14 series User Manual
Page 17
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1.9 Interface Board Diagnostic Chart
The following diagram and charts provide ten quick system checks that can be performed using only
a multimeter.
Meter Setting
Test
Pin
Pin
Results
12 VAC Power
50 VAC Scale
1 of J2
3 of J2
12-16 VAC
24 VAC Power
50 VAC Scale
2 of J2
Chassis
24-30 VAC
*Probe Resistance (RH)
R X 1000 OHMS
11 of J2
12 of J2
See Chart
*Probe Resistance (LH)
R X 1000 OHMS
3 of J1
2 of J1
See Chart
Hi-Limit Continuity (RH)
R X 1 OHMS
7 of J2
4 of J2
0 - OHMS
Hi-Limit Continuity (LH)
R X 1 OHMS
4 of J1
7 of J1
0 - OHMS
Latch Contactor Coil (RH)
R X 1 OHMS
8 of J2
Chassis
3-10 OHMS
Latch Contactor Coil (LH)
R X 1 OHMS
5 of J1
Chassis
3-10 OHMS
Heat Contactor Coil (RH)
R X 1 OHMS
9 of J2
Chassis
18-25 OHMS
Heat Contactor Coil (LH)
R X 1 OHMS
6 of J1
Chassis
18-25 OHMS
* Disconnect 15-Pin harness from the computer/controller before testing the probe circuit.
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
1
2
3
4
5
6
8
7
9
10
11
12
13
14
15
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
K1
K2
K3
K4
Left
Latch
Relay
Right
Latch
Relay
Left
Heat
Relay
Right
Heat
Relay
Test Points
J1 Left J2 Right
Diagostic LEDs