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MASTER JET CF SERIES ATMOSPHERIC GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1-20
1.9 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 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 likely encountered can be grouped into six broad categories:
1. Pilot/Ignition failures
2. Improper burner functioning
3. Improper temperature control
4. Computer-related problems
5. Filtration problems
6. Leakage
The probable causes of each category are discussed in the following sections. Troubleshooting
charts are included at the end of the chapter to assist in identifying some of the more common
problems.
1.9.1 Pilot/Ignition Failures
There are two categories: no pilot flame and unreliable flame.
No pilot flame
1. No gas or insufficient gas supply.
2. Clogged pilot orifice.
3. Air in gas lines (usually in new installations).
4. Open or grounded high limit.
Unreliable flame
1. Loose/corroded wire connections.
2. Low or no voltage out of thermopile / thermocouple (CE units).
3. Defective gas valve.