Float Switch Troubleshooting - Frymaster FilterQuick easyTouch FQG60T Service Manual

1.22.5.1 Float Switch Troubleshooting

Typical Sensor Related Failures
-E65 in the error log.
If the controller continues to display E65 and does not heat, and gas supply, gas valve, etc. have been checked and no
heat lamp illuminates because no call for heat is initiated, then follow these steps:
- Check (see diagram below)
- Ensure the float switch can move freely up and down the rod. If not, use a no scratch pad to remove any
buildup that is restricting movement of the float. Ensure when removing the float switch that its position is
clearly marked and replaced properly. Installing the float upside down will change the switch from N/O to N/C.
This could allow the empty frypot to ignite.
- A common E65 error occurs if the float switch is not satisfied. If the float switch is clean and in the upper
position and the vat is full, the time delay relay board relay may be the cause. Replace the time delay relay
board.
- Power to the FIB board from the power supply in the transformer box. Check for 24VDC.
- Power to heater/relay coil on relay board. Check voltage to the coil between pins 8 and 1 to ensure
that 24VDC is present with oil in the vat.
- Check voltage between pin 3 and 2 on the time delay relay board. It should read 3.3VDC for air and 0VDC for
oil. A common message for a shorted harness or issue is "IS DRAIN CLEAR?" with oil in the filter
pan. Low voltage on these pins may cause E65 errors due to time delay relay board issues. Replace the time
delay relay board.
- Check VIB harness on J1. Interrupted communication will prevent the fryer from heating.
1.22.5.2 Float Switch Sensor Time Delay Relay Wiring Diagram
VIB J1 Pin 10
+24VDC from VIB J1 Pin 9 (through the float switch)
VIB Board J1 Pin 5 (GND)
VIB Board J1 Pin 6
(Signal 3.3VDC (Air) / 0.0VDC (Oil))
8 1
Red Black
7 2
White Red
COM
6 3
Green NO Red
5 4
NC
Time Delay Relay Board
DPDT 3.5 sec.
Figure 55
1-46
24VAC from Smart Interface
Board J2 pin 5 through High Limit
To Ignition Module (24VAC)