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DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1-40
1.9 Troubleshooting Guides (cont.)
A. Pilot does not stay lit (fryer is on and
thermopile output is approximately
400 millivolts and/or thermocouple is
approximately 25 millivolts.
A. Check high-limit switch. Switch
continuity should be "0." If not, high-
limit switch is defective. Replace
high-limit switch.
B. Pilot does not stay lit (fryer is on and
thermopile output is not
approximately 400 millivolts or
thermocouple output is not 25
millivolts.
B. Inspect thermocouple (units without
interface board) or thermopile (units
with interface board) and replace if
defective.
C. Pilot stays lit, and the high-limit and
thermopile/thermocouple are known
working, but burners fail to light.
C. Inspect gas valve and replace if
defective.
D. Gas valve is known to be good, but
there is not 24 VAC (120VAC on
systems so equipped) at the gas valve
terminals.
D. Inspect electronic/operating
thermostat sensor (while still in
frypot) for damage. Replace if bent,
dented, or cracked. Inspect leads for
fraying, burning, breaks, and/or kinks.
If found, remove and replace
thermostat(s). Remove leads from
terminal block, allow oil to cool 15°F
(8°C) below thermostat setting, and
check continuity. If continuity is not
"0,” then thermostat has failed.
Replace thermostat(s).
No burner flame.
E. Continuity from terminal block to gas
valve electronic/operating thermostat
wire is not "0."
E. Inspect wiring for breaks or shorts and
repair if necessary.
A. Incoming gas supply pressures are not
within range [Natural- 6-14" W.C.
(1.49-3.49 kPa); Propane- 11-14"
W.C. (2.74-3.49 kPa)]
A. Inspect gas supply to fryer. Repair
and/or replace faulty components
(defective supply shut-off valves,
incorrect piping size, etc.)
Fluctuating or erratic
lighting of burner flame.
B. Air in gas supply lines (new
installation).
B. Allow unit to cycle on and off for
approximately 30 minutes to force air
from gas manifold and lines.
Electronic/operating
thermostat will not adjust
to correct temperature.
A. Electronic/operating thermostat is out
of calibration.
A. Calibrate electronic/operating
thermostat. Replace if calibration is
not possible.