Rational COMBIMASTER Operating Instructions

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Error Possible cause To eliminate
The unit does not indicate a
function after it is switched
on.
External main switch is
switched off.
Fuse on the premises’
distribution board has
tripped.
The ambient temperature
after switching the unit off
remained below 5 °C (41 °F)
for a long time.
Switch on at the main switch.
Check the fuses on the premises’ distribution
board.
Heat the cooking cabinet to above 20 °C
(68 °F).
The appliance must only be used in frost-free
conditions (see installation instructions).
The gas unit indicates
„PLO”.
The power supply is not
connected with the correct
polarity.
If the gas unit is connected to a socket,
remove the connector and turn through 180°.
An electrician can permanently connect the
unit (without a connector) with the correct
polarity.
Gas unit constantly displays
Reset.
The gas supply to the unit is
interrupted.
The gas pressure is too low.
Open the gas valve.
Switch on the ventilation cover.
Have the gas supply to the unit checked.
Cooking mode button
flashing
The cooking cabinet is too
hot
Use Cool down to cool the cooking cabinet
(see the “Cool down” section of the “General
User Instructions” manual).
Before you call customer service

Rational COMBIMASTER Specifications

General

Manufacturer	Rational
Category	Oven
Type	Combi Oven
Cleaning	Automatic cleaning system
Power Consumption	Varies by model
Steam Injection	Yes
Dimensions	Varies by model
Weight	Varies by model
Temperature Range	30-300°C
Cooking Modes	Convection, steam, combination
Capacity	10-20 gastronorm containers