Frymaster H55 Series Technical Reference Manual page 16

The interface board holds the circuitry to execute controller commands to the fryer.
The board design on 2-10 features removable relays, fuses and LEDs arrayed around the board.
LED Indications
LED* Illumination indicates
1 24VAC to left gas valve
2 24VAC to left module
3 24VAC from transformer
4
24VAC to right module
5 24VAC to right or full-pot gas
valve
6 12 VAC
7 Proves blower is working (CE)
*Numbered on page 2-10
Test Points
1
2
J1 Test Points
(Split Vat Left Side)
1
- High Limit – Pin 9 to gas
valve wire 12C
2
- Probe – Pin 2 to Pin 6
High-Effi ciency Gas
IMPORTANT:
from the controller or interface board
before testing probe circuit.
1
J3 Test Points
(Full Vat & Split Vat Right Side)
1
- 12 Volt – Pin 1 to Pin 3
2
- 24 Volt – Pin 8 to Ground
3
- High Limit – Pin 9 to gas
4
- Probe – Pin 2 to Pin 6
(Disconnect 15-pin harness.)
5
- Line Voltage In – Pin 11 to
6
- Line Voltage to blower – Pin 12
2-11
Disconnect harness
3
6
5
4
2
valve wire 13C
Ground
to Ground