COMBITOUCH™ ES SERIES • ELECTRIC INSTALLATION MANUAL • 29.
I N S T A L L A T I O N
E R R O R C O D E S
E
rror
Code
Display Shows
When does the error
occur?
Possible reason
E20
HACCP Only - B11 Core
Temperature Probe Single
Point Fault
Error E20 is not shown in display.
Instead a probe sign with "?" is
shown as popup window. In case
the customer cooks in time mode
during first step and during second
step switches to probe mode but has
no probe in place, the error E20 will
be shown in the error code list and
HACCP list.
Single point core temperature
probe defect or disconnected
— Clean Probe Receptacle Pins with sand paper.
— B11 Single Point Core Temperature probe with quick
connect, defective.
— B11 Single Point Core Temperature probe wires with
quick connect, disconnected.
— B11 Single Point Core Temperature probe receptacle,
defective.
—
B11 Single Point Core Temperature probe receptacle
wires disconnected.
E21
N6 Cavity Probe Fault Cavity temperature probe defect
or disconnected
— N6 Oven Cavity Temperature probe defective.
— N6 Oven Cavity Temperature connection problem.
E22
B10 Core Temperature Probe
Multipoint Fault
Multipoint core temperature probe
defect or disconnected
— B10 Multipoint Core Temperature probe defective.
— B10 Multipoint Core Temperature probe connection
problem disconnected.
E23
B4 Boiler Probe Fault Boiler temperature probe defect
or disconnected
— B4 Boiler temperature probe defective.
— B4 probe wires connection problem.
E24
B5 Bypass Probe Fault Bypass steam temperature probe
defect or disconnected
— B5 Bypass steam temperature probe defective.
— B5 Bypass steam temperature connection problem.
E25
B3 Condensor Probe Fault Condensor water temperature
probe defect or disconnected
— B3 Condensor temperature probe defective.
— B3 Condensor probe connection problem.
E26
N8 Boiler Safety Temperature
Probe Fault
Steam generator heating element
protection probe defect or
disconnected
— N8 Boiler temperature probe defective.
— N8 probe connection problem.
E27
Boiler Element Temperature
High
Excess steam generator safety
probe
— Scale build up inside steam generator.
— Defective water level probe.
— Water level probe connection failure.
— N8 boiler temperature probe defective.
— N8 probe connection problem.
— Steam element contactor(s) stuck closed.
E34
Steam Generator Drain Pump
Fault
Water level in steam generator
does not drop during cleaning
program
— Scale build up inside the steam generator drain pump.
— Generator drain pump is faulty
— Connection issue at drain pump.
— No output to pump from relay board.
E35
Vent not closed Browning valve does not close
completely
— Alignment issue between motor cam and vent motor
safety switch (micro switch).
— Fault vent valve (motor).
— Fault vent valve safety switch (micro switch).
— Wiring or connection problem.
E36
Steam Temperature High Oven cavity temperature is too
high when operating in a steam
mode or cleaning program
— Water supply is shut off.
— Low water pressure.
— Water injection pipe obstructed.
— Water flow valve plugged or defective.
— Dual solenoid valve Y-1 obstructed or defective.
— No output to solenoid valve form relay board.
E40
B3 Condensor Probe Short to
Frame
Condensor water temperature
probe short to ground
— B3 condensor temperature probe defective.
— Probe connection problem.
E41
B4 Boiler Probe Short to
Frame
Boiler protection temperature
probe short to ground
— B4 boiler temperature probe defective.
— Probe connection problem.
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