35
Ed. 0219 - 70702522 REV00 Michelangelo - Use and maintenance
Error messages CD mod.
Error messages TS mod.
Warnings TS mod.
Displayed
code
Oven behaviour
Solution
A0
The alarm shows the oven configuration is wrong.
No oven function works
Contact
Technical
Service
A1
The alarm shows there is no communication between the
oven boards. No oven function works
A4...A8
The light is switched o
ff
and the oven does not heat when the
temperature is set
Code
Oven behaviour
Solution
W1
Power board heat sink
temperature too high.
The heat sink is a special
aluminium block, fitted
onto the power board
to dissipate the heat this
generates.
If these alarms are displayed, the oven continues to
work but shows some anomalies connected with the
excessive temperature that must be solved.
Check:
• the oven is positioned correctly (e.g. the temperature
of the room the oven is installed in)
Fig.48.
• the recommended distances from walls and
appliances that generate heat (e.g. fryers)
Fig.40
- Fig.49.
• if the cooling fans are working (looking through the
vents without removing the side)
Fig.50.
Once these checks have been made, if the problem
remains, contact Technical Service.
W2
Cold junction temperature
too high.
The cold junction is a
sensor built into the
control board that
detects the temperature of the
latter and the surrounding
atmosphere.
W3
The oven is fitted with a meter
counting the working hours:
after 250 hours, a pop-up
warns the user that cleaning
under the refractory surface is
required.
If you touch the pop-up, it disappears but remains as
a warning in the taskbar (see page
13
, item
E
). We
recommend cleaning under the refractory surface is
carried out as soon as possible: see
Fig.37.
W5...
W14
messages about the notes
Displayed
code
Oven behaviour
Solution
Err
The heater thermocouple is disconnected or faulty
Contact
Technical
Service
rEF
The board and cold coupling temperature probe is faulty
ALL
Control card high temperature pre-alarm, exceeding
parameter 06.
ntc
Control card high temperature alarm.
NOTE:
“Err” - “ntc” the machine switches o
ff
“ALL” the machine continues to operate.
0161 696 0052