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MASTER JET CF SERIES ATMOSPHERIC GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1-31
1.10 Troubleshooting Guides
The troubleshooting guides found in the pages that follow are intended to assist service technicians
in quickly isolating the probable causes of equipment malfunctions by following a logical, step-by-
step process.
1.10.1 Initial Troubleshooting, Millivolt Frying Systems
PROBLEM PROBABLE CAUSES CORRECTIVE ACTION
A. Pilot is not lit. A. Light pilot.
B. Loose, dirty, or corroded terminals on
gas valve.
B. Clean and tighten terminals on gas
valve.
C. Loose, dirty, or corroded terminals on
thermostat.
C. Clean and tighten terminals on
thermostat.
D. Thermostat, gas valve, or high-limit
wires broken or shorted.
D. Examine wires for signs of abrasions,
cuts, kinks, etc. If the wiring is
damaged, replace the affected
component.
E. Thermostat out of calibration. E. Check calibration of thermostat in
accordance with procedures in
Section 1.7 of this manual.
Burner won’t ignite.
F. Thermostat or gas valve is suspect. F. Inspect and replace components if
necessary.
A. One or more burner orifices clogged. A. Turn gas valve knob to OFF position.
Use a thin wire to clear obstruction
from burner orifices.
B. Blocked flue outlet. B. Clear blockage from flue outlet.
C. Fryer flue connected directly to vent
hood with a chimney-like duct.
C. Remove duct and allow for at least 18"
(45.7cm) between flue outlet and vent
hood filters.
Burner partially ignites.
D. Broken or missing ceramic targets, or
incorrect burner gas pressure.
D. Replace broken/missing ceramic
targets if required. If not required,
check burner gas pressure and adjust
to correct pressure if required.