SERVICE CALL ON A VULCAN CONVECTION OVEN
We received a service call from a customer stating that they
had a gas convection oven that wasn't heating up. When our technician arrived
he was told that the oven sounds like everything is running but it just isn't
heating. This convection oven is an electric ignition, gas operated oven. First
thing he does is close the door and turn the controls to the on position. The
blower motor starts but there was no ignition sound. This one is the type that
has a spark igniter and he didn't hear it sparking. It's also the type that has
an electronic temperature control with low volt sensor. The next thing he tried
was to jumper the relay contacts to the temperature controller. This is a good
test to see if there is a controller or sensor problem or possibly a spark
ignition system problem in the igniter, flame switch, or spark ignition module.
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| Vulcan Convecction Oven |
Once he jumped the relay on the temperature controller and
turned the machine on he got spark ignition and the burner kicked on. This is a
good test to quickly eliminate the ignition system. If it ignites and heats
when the temperature controller relay contact is bypassed it usually indicates
either a bad temperature controller or a bad temperature sensor. In either case
the factory usually recommends if one of these parts go out to change both of
them. Similar types of gas ignition systems are used on lots of different types of restaurant kitchen equipment including some gas fryers, griddles, tilt braisers, etc.
Our technician had to order these parts but when they came
in he went back and replaced them and made another happy customer, especially
since we had to expedite the parts to get them going just a few days before their
Thanksgiving cooking.
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