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Pitco Frialator Master
Question moved from Misc
HEAT FAILURE - This means the heating system has failed to respond, which can occur because a high temperature limit switch has been tripped and needs resetting. On gas deep fryers, "HEAT FAILURE" may display if the pilot fails to light or if the pilot flame is too weak as detected by the ignition module.
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Try first to clean the thermopile. If it has accumulated soot/ carbon, it will not sense enough heat from the pilot flame to generate small amount of electricity to energize the pilot valve and main valve of gas valve.
Check if the gas valve knob is set at "ON" position after lighting the pilot. Check also it the thermopile is receiving enough heat from pilot flame and try also to tighten all wiring connections on gas valve, thermostat and hi limit. If these do not seem to correct the problem, you have to replace the thermopile.
Check if the flame quality of the pilot is good. Small amount of voltage generated by thermopile used in energizing pilot main valve coil during fryer operation relies on the quality of pilot flame, also, the thermopile itself should be free of soot or any form of dirt in order for it to absorb the heat from pilot flame. Check also the gas pressure, it should meet the gas pressure required on the nameplate.
Check the thermopile, it must be free of dirt or soot so that it can absorb enough heat from pilot flame and in turn can generate the right amount of voltage to energize pilot and burner coils. Check also the gas pressure, it should be of standard as required on the unit's nameplate.
Better check the incoming gas pressure first, it should match the requirement as stated on the nameplate. Low gas pressure will make the pilot flame small until it could not heat up the thermopile which will shut both main burner and pilot flame.
If this is a milivolt unit, meaning no solid-state or computer/digital controlled. You would need to turn your gas valve to the pilot position, then press in and hold until you can light the pilot using a lighter (this may take several minutes, to bleed the air from gas supply) once there is a pilot flame present, you will need to hold the valve button in for about 45 seconds to heat the thermalpile. Once pilot is lit, thene turn to on position and proceeed to turning thermostate to set temp.