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Service Manual Deli Multisserie form 9123560 rev. 02/2017
TROUBLESHOOTING
Error message
Description
Possible causes
......... sensor open
(in general)
The temperature sensor input reads
higher than 320°C (600°F).
In resistance, this is higher than 2200Ω.
..........sensor shorted
(in general)
The temperature sensor input reads lo-
wer than 0°C (32°F).
In resistance, this is lower than 1000Ω.
Top sensor open
Top sensor broken or wiring loose
Btm sensor open
Bottom sensor broken or wiring loose.
Core sensor open
Core sensor broken or wiring loose.
Top sensor shorted
Top sensor broken or wiring shorted
Btm sensor shorted
Bottom sensor broken or wiring shorted
Core sensor shorted
Core sensor broken or wiring shorted.
Powerboard fails
(See next chapter)
Communication problem between the
Power & I/O board and the CPU board
Broken Power & I/O board or connection pro-
blem in ribbon cable (connector).
Slave board fails
(See next chapter)
Communication problem between the
Extension I/O board and the CPU board.
(Multisserie and ACR)
Broken I/O extension board or connection pro-
blem in ribbon cable (connector).
See next chapter
Air valve defect
Disabled in s.w.
version 4.30 for old
CPU board !!
Enabled in V5.00.10
of new CPU board.
Disabled again in
s.w. version V6.00.10
Missing feedback signal from one or both
microswitches on the air valve (vent).
Position switch(es) loose.
Position switch(es) defect.
Position switch(es) wrong adjusted.
Camshaft loose (does not rotate).
Airvalve motor broken.
Airvalve blocked.
Loose wiring of switches or motor.
Both switches are activated.
Water drain defect
Missing feedback signal for the cleaning
position of the 3-way valve
Broken switches inside the valve housing.
Broken or loose relay K8.
Wiring problem
Grease drain defect
Missing feedback signal for the cooking
position of the 3-way valve
Broken switches inside the valve housing.
Broken or loose relay K7.
Wiring problem
Fan guard fails
Diabled in s.w. versi-
on V5.01.03 !!
Too less or no heat distribution to the
cooking cavity
The blower is not rotating while it should.
Defect vane switch(es).
broken heating elements
Other messages
Description
Possible causes
Please clean first
The cleaning program did not
finish. Detergent remainings
could be in the oven cavity.
Start the cleaning program (in
rinse)
The cleaning program has been stopped by the operator.
The cleaning program has been interrupted by a power
supply failure, or the power supply has been switched off
during the cleaning program (at night).