Troubleshooting And Problem Isolation - Dean D20 series Service & Parts Manual

DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES

1.8 Troubleshooting and Problem Isolation

This section is intended to provide technicians with a general knowledge of the broad problem
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
6. Leakage
7. Basket lift malfunctions.
The probable causes of each category are discussed in the following sections. Troubleshooting
guides are included in Section 1.9 to assist in identifying some of the more common problems.
1.8.1 Ignition Failures
Ignition failure occurs when the ignition module fails to sense a flame within the 60-second time
delay period and locks out. Turn the fryer off, locate and fix the problem, then turn fryer back on to
clear the module lock.
There are three primary reasons for ignition failure, listed in order of probability:
1. Problems related to the gas and/or electrical 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. Verify that the quick
disconnect hose is properly connected, the fryer is connected to power, the main gas supply valve is
open, and the circuit breaker for the fryer electrical supply is not tripped. Some fryers are equipped
with a fryer reset-switch that must be reset each time the fryer is turned off.
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