Frymaster H55 Series Technical Reference Manual page 61

cycle 4 seconds on, 4 seconds off.
• Check between pin 3 and 2; 5VDC for air and 0VDC for oil. A common message for a shorted
harness or issue is IS DRAIN CLEAR? IS DRAIN CLEAR? with oil in the fi lter pan.
• Check ground on pin 2 on relay board to stud for a secure ground.
• Check AIF communication harness. Interrupted communication will prevent the fryer from
heating.
• If the oil level sensor is cycling 4 sec. on/off and oil is surrounding the sensor and LOW TEMP is
displayed, the sensor may have a carbon build up that is insulating the sensor. Use a no-scratch
pad to remove carbon build up. Carbon build up on the OIB counts for a large number of customer
issues.
LOV: 120V comes from
the basket-lift relay, which
is energized by 12VDC
from the controller.
Black
(To J1 Pin 7 (DV)
or J3 Pin 7 (FV))
120V
Temp. Control
White
(To T2 Terminal Block
Line Voltage In From
Oil Level Sensor
(Basket Lift) Relay on
Interface Board
24VAC from Interface Board
through High Limit (Ign. Module
Call for Heat)
To Gas
Valve
Automatic Filtering Fryers
FilterQuick: 120V comes
from the OIB relay, which
is energized by 12VDC
from the controller.
Fixed Setpoint
120V
8
Black
7 C
Black
6
NO
Black
5
NC
Time Delay Relay Board
DPDT 7sec. Delay
4-17
Thermocouple
(350 ohms US)
(1325 ohms Intl)
120V (US) 230V (Intl) 40W
Heater w/ Thermocouple
1
White
2
Green
3
To AIF Board J2 Pin 9 DV
Red
or 10 FV (AIF Oil Signal)
4
Heater