Interface Board - Frymaster FilterQuick FQG30 Service Manual

The blower is on during the heating cycle. The blower also turns on if the oil temperature exceeds 2°F above
setpoint and during filtration to help cool the frypot to minimize caramelization of the oil on the frypot
interior.
1.3

Interface Board

All fryers in this series have an interface board located in the component box behind the control panel. The
interface board provides a link between the controller and the fryer's individual components without requiring
excessive wiring, and allows the controller to execute commands from one central point.
K2 and K3 are double-pole-double throw (DPDT) relays that supply 24VAC to the ignition and gas valve
circuits, as well as 120VAC to the blower motor. The relays on this board plug into sockets. If a relay fails,
that relay can be replaced. K1 and K4 are single-pole-double throw (SPDT) relays that supply voltage to the
basket lifts.
LEDs (labeled D1 through D7) are arrayed around the board to assist in troubleshooting.
1
SOUND
J2
2
3
1 4
2 5
J6
J7
J8
3 6
3 6 9 12
J1
2 5 8 11
1 4 7 10
D1
K1
GV
LEFT
BASKET
LIFT
RELAY
GND
AD
AS
V2D
HEAT
D2
GND PWR
RELAY
GND V2S
AND
PWR
BLOWER
MOTOR
RELAY
K2
SMT INTERFACE BOARD KIT 826-2264 (106-6706)
NOTE: In full-vat fryers, the relay for the left side (K2) may not be present.
The chart on the following page illustrates current flow through the board, and the table at the top of page 1-4
identifies frequently used test points.
13
7 10
F2 Ignition
3 AMP Module D7
8 11
14
D6
9 12 15 AIR
12V
3 6 9 12
J3
2 5 8 11
1 4 7 10
K4
D5
F1
RIGHT
Blower
GV
BASKET
Motor
3 AMP
LIFT
RELAY
D3 V1S GND
PWR GND
HEAT
24V
V1D
RELAY
ALR
GND
AND
BLOWER
D4
MOTOR
PWR
RELAY
K3
INTERFACE BOARD
LED DIAGNOSTIC LIGHTS
D1 24 VAC to left gas valve (dual vat only)
D2 24 VAC to left ignition module
D3 24 VAC from transformer
D4 24 VAC to right ignition module
D5 24 VAC to gas valve (right valve if dual vat)
D6 12 VAC from transformer
D7 CE and Japanese units only: air switch closed
NOTE: Refer to Section 1.11.1 on
page 1-20 for troubleshooting
flowchart.
1-2