Interpretation Of Digital Controller Lights - Frymaster 47 SERIES Installation, Operation, Service, And Parts Manual

MOTOR AND GEAR PROBLEMS
The most likely problem to be encountered in
this category is erratic motion of the lift due to
a worn drive gear. Failure to keep the lift rod
and bushings properly lubricated will cause
unnecessary wear of the gear. The problem is
corrected by replacing the worn gear.
If the lift cycles correctly but fails to remain in
the up position (i.e., goes up, but then slowly
settles back down into the frypot), the problem
is a failed motor brake. A failed motor brake
cannot be repaired and requires replacement of
the motor itself.
If power is reaching the motor but the motor
fails to run, the motor is burned out and must
be replaced.
ELECTRONICS PROBLEMS
This category encompasses problems with the
relays, microswitches, capacitors, resistors,
interface board, wiring, and controls.
Troubleshooting the electronics of the modu-
lar basket lift is simply a process of verifying
current flow through the individual compo-
nents up to and including the motor. Using a
multimeter set to the 250 VAC range, check
the connections on both sides of the compo-
nent for the presence of 120 VAC. The sim-
plified wiring diagrams on the preceding
pages identify the components and wiring
connection points.
7.9.8 Interpretation of Digital
Controller Lights
Power light on, heat light cycling, trouble
light off, and melt light on:
47 SERIES GAS FRYERS
CHAPTER 7: SERVICE PROCEDURES
7-28
• If fryer oil temperature is below 180ºF
(82ºC), the lights indicate the unit is
operating normally.
• If the oil temperature is above 180ºF
(82ºC) and the heat light continues to
cycle as if in the melt cycle, this may
indicate a defective probe circuit or
low incoming 12VAC to the control-
ler.
Power light on, heat light on, trouble light
off, and melt light off:
• If the fryer oil temperature is above
180ºF (82ºC) and below the setpoint
temperature, the lights indicate the unit
is operating properly.
• If the oil temperature is above the tem-
perature set on the control knob and
the heat light remains lit, this may in-
dicate a defective probe circuit.
Power light on, heat light off, trouble light
on, and melt light off:
• If the fryer oil temperature is below
410ºF (210ºC), the lights indicate one
of the following:
a. The probe circuit is defective, or
b. There is a connection problem on
pins 2 or 10 on the 15-pin wiring
harness.
• If the fryer oil temperature is above
410ºF (210ºC), the lights indicate a
run-away heating circuit.