CHAPTER 9: TROUBLESHOOTING GUIDE
9-2
As controller heat light
illuminates, interface HT light
comes on?
Turning Fryer On
Fryer is on and the
thermostat is set at least 45
degrees above the
temperature of the cool oil.
Fryer fails to heat
the oil.
Are the power and heat
lights on the controller on?
1. Trouble light ON indicates
a. Oil temperature is above the accepted range.
b. Problem in temperature measuring circuit (including probe).
2. Heat light and trouble light on indicates a latching circuit problem.
3. Defective controller.
4. Broken or improper wire connection.
Right
HI
light on
interface board on?
24 volts supplied to
latching contactor coil;
contactor activates?
1. Open high limit.
2. Open drain valve microswitch.
3. Broken or defective wiring connection.
1. Defective latching relay.
2. Broken or improper wire connection.
3. Defective interface board.
4. Defective latching contactor.
1. Defective heat relay.
2. Broken or improper wire connection.
3. Defective interface board.
4. Defective control.
Yes
NO
NO
NO
NO
Yes
Yes
Yes
Yes
Is 24 Volt light on interface
board lit?
1. Problem in 24-volt circuit.
NO
(Continued on Page 9-3)
To Next Page
Loading...
