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Trouble Shooting
Service Manual Deli Multisserie form 9123560 rev. 02/2017
Description of part
Symptoms
Possible cause
Action
Sensor
Temperature read-out on
LCD is not stable.
Upper sensor defect.
Wire loose.
Check sensor and wiring.
See also input test in service
menu
Product over cooked.
Cooking takes more time.
Uneven cooking.
Upper or lower sensor de-
fect. (resistance too low)
Check sensor and wiring.
See also input test in service
menu
Cooking takes more time
Upper or lower sensor de-
fect. (resistance too high).
Check sensor and wiring.
See also input test in service
menu
Uneven cooking (difference
between lower and higher
racks)
Upper or lower sensor
defect.
Offset parameter not
right adjusted. See service
menu.
Check sensor and wiring.
See also input test and para-
meters in service menu.
Sliding contact (on
rotor)
Baking program ends too
soon
Bad or no contact (resi-
stance too high).
Clean contact or replace.
Illumination
Less display effect
One or more lamps defect
Calcifying or greasing of
lamp glasses
Broken lamp gasket
Replace lamps.
Clean or replace lamp glas-
ses.
Replace gasket
Air exhaust valve (Vent)
Steam blows along the
doorgaskets.
Trumpet sound when clo-
sing the door
Whisle sound at the exhaust
Product too wet
Product too dry
Air exhaust valve clogged
Air Exhaust valve mal-
function
Check and or clean exhaust
pipe and valve
Check valve motor
Check position switches on
valve motor
Watervalve
Product too dry.
Product too wet.
Product not well proofed.
(Bake version).
Cleaning not ok.
Watervalve coil defect.
Filter clogged.
Dirt in watervalve.
Reducer in watervalve
clogged.
Reducer in watervalve not
well mounted.
Check coil.
Clean valve if possible.
Replace valve AND reducer.
Water supply
Product too dry.
Product not well proofed.
(Bake version).
Cleaning not ok.
Water tap closed.
Water pressure too low
(<2bar).
Filters blocked.
Kink in hose.
Open tap.
Check pressure.
Check filters
Search for a kink in the hose.
Tubes calcified
Product too dry.
Product not well proofed.
(Bake version)
Supply water not decal-
cified.
Decalcifying equipment
not ok.
Decalcifying filter satura-
ted.
Check water hardness.
Change filter.
Door switch
Message door open appears
while door is closed
Reed contact door shor-
ted.
Wiring shorted.
Check reed contact and/or
wiring. Replace if necessary
Blowers,heaters and ro-
tor stay on while door is
opened.
Reed contact defect.
Wiring loose.
Check reed contact and/or
wiring. Replace if necessary
