COMBITHERM GAS INSTALLATION AND MAINTENANCE MANUAL — 6470ML
PG. 30
3.4 TROUBLESHOOTING
In the event of a Combitherm malfunction during operation, an error code and message will appear in the
display to assist in finding a rapid solution to the problem. The following is a list of all error codes which
includes the cause along with a possible solution.
ERROR
CODE
E01
E02
E03
E04
E05
E11
E15
DESCRIPTION OF ERROR
Low water.
Excessive temperature in control service area:
The error message will occur at a service area
temperature of 176°F (80°C).
Convection Fan malfunction.
Cooling Fan malfunction.
Gas or flame is not detected.
Oven probe (N6 thermocouple) measures a temperature in
excess of 572°F (300°C).
Drain probe (B3 thermocouple) measures a temperature in
excess of 212°F (100°C).
POSSIBLE CAUSE/REMEDY
Water supply is off.
Low water pressure.
Filter in solenoid valve or water connection is clogged.
Pressure regulator (located under the solenoid valve) needs
to be increased to 40psi. Clockwise rotation increases
pressure, counter-clockwise decreases pressure. Seal with
acrylic nail polish.
Water pressure switch is defective or clogged.
Auxiliary fan is defective.
Ventilation vents are blocked due to inefficient distance from
wall at installation site.
Minimum distance to equipment such as fryers, grills,
kettles, etc. has not been maintained.
Motor Protection trip circuit, F52 has been set too low. Set
amp dial at a higher setting.
Fuse, F10 is blown.
Improper main power supply wire to unit is causing a high
amp draw.
Fan wheel is obstructed.
Motor Protection Switch, F52 is defective.
Fan Motor is defective.
Cooling fan is obstructed.
Cooling fan is defective.
Gas line is not connected.
Air is present in the gas line.
Pilot does not ignite.
Pilot assembly is defective.
Incoming power lines are reversed — L1 Black and L2 White.
Oven Temperature Probe, N6 is defective.
Motor Protection Switch, F52 is tripped.
Water supply is off.
Oven is connected to warm water supply.
Inlet filter on solenoid valve is dirty.
Solenoid valve or solenoid valve coil on Y2
is defective.
Thermocouple B3 is defective.
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