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7-2
7.2 MAIN BURNER MALFUNCTIONS
PROBLEM CORRECTIVE ACTION
Main burner will not come
on even though air blower
is in operation; no gas
pressure at main burner.
1. Check that the combination gas valve is ON.
2. Check that the pilot is lit and is operating properly.
Air blower is not operating,
although power is present
at the fryer.
1. Cooked product or other material may have fallen into the
flue and lodged in the blower wheel, preventing it from
turning. Clean out flue and blower wheel.
2. Blower motor may have overheated and shut off. This
condition will correct itself when motor cools (20 minutes).
If problems with blower overheating persist, call for
service.
3. If fryer is equipped with a Thermatron controller, the
temperature probe or the controller board may be
defective. Call for service.
Signs of excessive
frypot temperature;
Oil quickly becomes
discolored.
1. Check Thermatron controller; may be out of calibration.
Re-calibrate in accordance with instructions in Section
7.4.
2. Shortening of inferior quality or used too long. Replace
with quality shortening.
7.3 INDICATOR LIGHTS
The fryer’s indicator lights serve a diagnostic purpose. All lights are lit when the fryer is working
properly. (The green light on the control panel will cycle on and off as the fryer calls for heat). Use
the following procedures to isolate problems indicated by light combinations. Lighting sequences
not listed are beyond the scope of operator correction; call an authorized service agent.
Turn the temperature dial to 400°F (204°C) to ensure the sensor will demand heat. Check all
indicator lights in the fryer cabinet and on the control panel. [Older units may have power and reset
switches with different colored lights (orange, amber, red, etc.). Substitute the light color of the old
switch with the respective "green light" switch in the following troubleshooting procedures. The
control panel light colors haven’t changed.]