Unox MINDMaps CHEFTOP User Manual

225
Symptom Problem Solution
The cooking
cabinet has
spots of rust
on the stainless
steel
The oven does
not produce
steam
M
easure the inflow water pressure with a pressure gauge. Do you have
a value within the range 1.5 < p < 6 bar?
■ If not, the water pressure is not in compliance with the UNOX
specification
■ If yes, measure the pressure downstream the pressure reducer with
a pressure gauge. Do you have a pressure equal to 2 bar?
■ If not, replace the pressure reducer
■ If yes, go on with the troubleshooting
The oven does
not pump in
water
Is the tap water open?
■ If not, open the tap water
■ If yes, do you have power supply to the steam solenoid measuring with
the multimeter set to V AC?I
■ If not, replace the power board
■ If yes, is the steam pipe clogged?
■ If yes, clean the pipe and check the water quality
■ If not, replace the steam solenoid
The control
panel is blank
The oven is in
stand-by mode
When the oven is not running, every 15 minutes it goes in stand-by
mode: the control panel is blank while the LED bar is turned on. To
wake up the oven it is enough to touch the control panel on any point,
except on the physical button in case of PLUS models. If for any reason
the display does not turn on, press the power button to reboot the oven
manually
The control panel
is not powered
or damaged or
the USB board is
damaged
Remove the control panel and measure between the black and yellow
PIN of the main connector with the multimeter set to V DC, if you have
12 V DC. Do you have the right voltage?
■ If yes, replace either the control board or the USB board
■ If not, open the back of the oven and measure the voltage between
PIN 1 and 4 of the P11 socket with the multimeter set to V DC. Do you
have 12 V DC?
■ If yes, replace the control-power board cable harness
■ If not, measure on the P21 socket of the power board between the
yellow cable and between the red cable (only for PLUS version) if
you have 12 V AC and 21 V AC respectively, with the multimeter set
to V AC. Do you have the right voltage?
■ If yes, replace the power board
■ If not, measure on the transformer between the yellow cable
and between the red cable (only for PLUS version) if you have 12 V
AC and 21 V AC respectively, with the multimeter set to V AC. Do
you have the right voltage?
■ If yes, replace the cable harness
■ If not, measure on the transformer between the grey cable if
you have 230 V AC, with the multimeter set to V AC. Do you
have the right voltage?
■ If yes, replace the transformer
■ If not, measure on the P1 socket between PIN labelled as
NF and LF if you have 230 V AC, with the multimeter set to
V AC. Do you have the right voltage?
■ If yes, replace the cable harness
■ If not, verify the F2 fuse. Is it fine?
■ If yes, replace the power board
■ If not, replace first the transformer that maybe is
shorted and then the fuse
213
The chloride
content in the
inflow water
is too high
accordingly
with UNOX
specification
The inflow water
hardness is too
high accordingly
with UNOX
specification
If the inflow water quality is not in compliance with the technical data
reported in the manual, install a UNOX.Pure-RO. Polish the steel
surface with a polish paste

Unox MINDMaps CHEFTOP Specifications

General

Brand	Unox
Model	MINDMaps CHEFTOP
Category	Commercial Food Equipment
Language	English