Specifications

1-23
1.12 RTI Service Issues
1.12.1 RTI MIB Tests
The LOV™ fryer will ONLY operate with RTI systems that have the new RTI updated
three-pole float switch. If the float switch is the older two-pole switch, call RTI. These
float switches are polarity specific which may short to ground and damage an MIB
board.
Normal measurements (MIB J6 8 pin connector with everything connected)
AC voltage measurements:
Pin 1 to Pin 2 - 24 VAC.
Pin 1 to Pin 8 - 24 VAC when waste tank is full, 0 VAC when it is not full.
Pin 2 to Pin 3 - 24 VAC when RTI add switch and pump is on, 0 VAC when it is off.
Pin 2 to Pin 4 - 24 VAC when RTI waste valve switch is on, 0 VAC when it is off.
Pin 6 to Pin 7 - 24 VAC when RTI JIB valve is on, 0 VAC when it is off.
Troubleshooting
All return and drain valves should be closed and pump should be off while the MIB is resetting roughly five
seconds or so after a power on or after pressing the reset button; if any of the valves or pumps are on during
reset then the MIB board is bad or wires are shorted.
If JIB valve is not opening:
Take these readings when the JIB valve in the open position:
1. Voltage at MIB board from Pin 1 to Pin 2 should be 24 VAC; if not, check connections from RTI 24VAC
transformer and check transformer.
2. Voltage at MIB board from Pin 6 to Pin 7, should be 24 VAC; if not, the MIB board is bad or wires to JIB valve
are shorted or both.
3. Voltage at JIB valve should be 24 VAC; if not then check wiring from MIB board.
If Waste valve is not opening:
Take these readings when the waste valve in the open position:
1. Voltage at MIB board from Pin 1 to Pin 2 should be 24 VAC; if not, check connections from RTI 24VAC
transformer and check transformer.
2. Voltage at MIB board from Pin 2 to Pin 4, should be 24 VAC; if not, the MIB board is bad or wires to Waste
valve are shorted or both.
3. Voltage at Waste valve should be 24 VAC; if not, check wiring from MIB board.
If Add pump is not operating:
Take these readings with the add pump switch on:
1. Voltage at MIB board from Pin 1 to Pin 2, should be 24 VAC; if not, check connections from RTI 24VAC
transformer and check transformer.
2. Voltage at MIB board from Pin 2 to Pin 3, should be 24 VAC; if not, the MIB board is bad or wires to pump
relay are shorted or both.
3. Voltage at Add pump relay should be 24 VAC; if not, check wiring from MIB board. The relay is located on top
of RTI system.
Waste full signal:
Pin 1 to Pin 8 should be 24 VAC when full, 0 VAC when not full; if no level change, the connection from RTI
switch or MIB board is bad.