Metos 72/02CG, Installation And Operation Manual

Page: 46 / 72

2.9.2003 Rev. 1.0
Troubleshooting
40
TROUBLE POSSIBLE CAUSES WHAT TO DO
FOR THE USER FOR THE INSTALLER
GAS OVEN
Pilot flame won’t light: piezoelectric ignition device
faulty; replace it;
the spark plug is not secure-
ly fixed, or the wire connec-
tion is wrong; check the connection;
spark plug insulator dam-
aged; replace it;
pressure drop in gas supply
pipe; contact the gas utility compa-
ny;
nozzle clogged; remove any dirt from the noz-
zle;
gas valve/tap damaged; replace it;
After releasing the
knob, the pilot flame
goes out: gas valve knob not pressed
down firmly or long enough
to heat the thermocouple. repeat the lighting procedure;
thermocouple faulty; replace it;
gas valve/tap damaged; replace it;
Pilot flame stays lit, but
burner won’t light: pressure drop in gas supply
pipe contact the gas utility compa-
ny;
nozzle clogged; remove any dirt from the noz-
zle;
gas valve/tap damaged; replace it;
gas outlet holes on the burn-
er clogged; clean the burner;
Temperature control
fails to work: thermostat bulb damaged; replace the valve;
thermostat damaged; replace the valve;
Uneven cooking
(strong difference in
food colour): temperature is too high; use a lower temperature;
baking pan too close to heat
source; place the baking pan on the top
slide;
product divided into pieces
that have different sizes or
thicknesses; to ensure cooking evenness,
spread food over the entire bak-
ing pan evenly. In the case of
solid foodstuffs, all the pieces
should have --as much as possi-
ble-- the same size, number of
layers or thickness.
wire shelves not horizontal; level the appliance and check
that the wire shelves are hori-
zontal using the adjustable feet:
such operation is essential to
ensure even cooking.