Troubleshooting And Problem Isolation; Ignition Failures; Improper Burner Functioning; Improper Temperature Control - Frymaster 47 SERIES Installation, Operation, Service, And Parts Manual

28. Lift the frypot complete with burner, gas
valve, flue, and drain valve from the fryer
cabinet.
29. Transfer burner heat shield and burner to
replacement frypot.
30. Remove drain valve, thermostat or tem-
perature probe, and high-limit thermostat
and install on replacement frypot.
31. Reverse steps 1-28 to reassemble fryer.
CAUTION
Before installing
thermostat/temperature probe,
high-limit thermostat, and drain valve
on replacement frypot, clean their
threads and apply Loctite™ PST56765
thread sealant or equivalent to the
threads.
7.9 Troubleshooting and Problem
Isolation
Because it is not feasible to attempt to include
in this manual every conceivable problem or
trouble condition that might be encountered,
this section is intended to provide technicians
with a general knowledge of the broad prob-
lem categories associated with this equipment,
and the probable causes of each. With this
knowledge, the technician should be able to
isolate and correct any problem encountered.
Problems you are likely to encounter can be
grouped into seven broad categories:

1. Ignition failures

2. Improper burner functioning

3. Improper temperature control

4. Computer-related problems

5. Filtration problems
47 SERIES GAS FRYERS
CHAPTER 7: SERVICE PROCEDURES
7-16
6. Leakage problems
7. Modular Basket Lift malfunctions.
The probable causes of each category are dis-
cussed in the following sections. A series of
Troubleshooting Guides (decision trees) is
also included at the end of the chapter to assist
in identifying some of the more common
problems.
7.9.1 Ignition Failures
Ignition failure occurs when the ignition mod-
ule fails to sense a flame within the 4-second
time delay period and locks out. When this
happens, the module sends 24 VAC through
the interface board alarm circuit to the con-
troller/computer.
Solid-state controllers indicate ignition failure
by illuminating the heat light and trouble light
simultaneously. Computer Magic III controls
display " ."
H E L P
There are three primary reasons for ignition
failure, listed in order of probability:
1. Problems related to the gas and/or electri-
cal power supplies
2. Problems related to the electronic circuits
3. Problems related to the gas valve.
PROBLEMS RELATED TO THE GAS AND/OR
ELECTRICAL POWER SUPPLIES
The main indicators of this are that an entire
battery of fryers fails to light and/or there are
no indicator lights illuminated on the fryer ex-
periencing ignition failure.
quick disconnect hose is properly connected,
the fryer is plugged in, the main gas supply
valve is open, and the circuit breaker for the
fryer electrical supply is not tripped.
Verify that the