Specifications
12  L20-349 R3 
FRYER TROUBLESHOOTING GUIDE 
(Continued)
REMEDY 
1
. Measure the gas supply pres-
sure. 
Contact your local gas supplier 
to obtain adequate gas supply 
volume and pressure. 
2
. Check and tighten the connec-
tions. 
3. 
Block the excessive air flow to 
make the pilot flame contact 
the thermocouple. 
4
. Check for, and repair, any dam-
aged high-limit thermostat wir-
ing
. Otherwise, test the high-
limit thermostat by bypassing 
the high-limit thermostat (black 
and blue wires) at the gas con-
trol valve with a jumper wire. 
Next, perform the Lighting Pro-
cedure, to check whether the 
pilot flame lights. If the pilot 
flame lights and stays lit, the 
high-limit thermostat has failed 
and must be replaced.
1
. Perform the normal 
Lighting
Procedure. Turn the gas 
control valve knob to ON to 
light the main burners.
If the burners do not light, the 
gas safety valve has failed and 
must be replaced. 
2
. Measure the gas supply pres-
sure. 
Contact your local gas supplier 
to obtain adequate gas supply 
volume and pressure. 
3
. Refer to the preceding Pilot 
Burner problems and use the 
correct remedy. 
4
. Increase the thermostat setting 
until 
 the burners light. If this setting is  
 greater than the desired temperature, 
reset the thermostat. 
1
. Gas control valve knob set to OFF or 
PILOT. 
2
. Low gas supply pressure [less than 6” W.C.
for natural gas (11” W.C. for propane) 
when all other gas-powered equipment is 
operating.]. 
3
.  Pilot burner problem. 
4
. Thermostat control set below the tempera-
ture of the liquid shortening in the kettle. 
CAUSE 
1. Low gas supply pressure [less than 6
”
W.C. for natural gas (11
”
  W.C. for pro-
pane) when all other gas-powered equip-
ment is operating.]. 
2. Loose thermocouple or high-limit thermo-
stat connection(s) on gas control valve. 
3
. Pilot flame does not continuously touch 
the thermocouple because of excessive 
air flow around the pilot burner assembly.
4
.  High-limit thermostat problem has shut of
f
the gas. 
PROBLEM 
Pilot flame goes out 
repeatedly. 
Main burners do no
t
ignite. 
CAUTION: DO NOT return 
the fryer to normal operation 
with its high-limit thermostat 
bypassed. 
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