MAN1910117 V.7 – 15/11/2012
40
CPU board if there is tension and the TRIAC
control led is switched off.
Check that the ohmic value of the heating
element is settled at 44 Ohm for heating
elements of 1200W 230V and 33 Ohm for
heating elements of 1600W. Otherwise replace
the Instant boiler heating element.
The display "
OUT OF
SERVICE OFF 33B
"
An error occurred in
Instant
boiler temperature control
(low
temperature)
.
Check out if the clicson has been activated.
Otherwise press the reset button.
Check out if there is no tension at the ends of
the heating element and the led of TRIAC is
switched on and the clicson correctly works.
Replace the temperature TRIAC and the opto-
insulator on the CPU board. Check out
connection between CPU board and heating
elements.
The display "
OUT OF
SERVICE OFF 33C
"
Interrupted temperature probe
Replace the boiler temperature probe
Il display shows
"
PLEASE LOAD THE
MASTER PROGRAM
"
It has not been loaded any
master program in the CPU
board
Ask to Rhea technical service the correct master
file and load the file master with flash card into
the machine
18.2 Miscellaneous shortcomings
The shortcomings described in this section are not indicated by any message videoed on the machine.
SYMPTOM
PROBABLE CAUSE
SOLUTION
The machine does not switch on
(no component is powered)
No mains voltage
Wait for the resetting of mains voltage
The boiler is overheated
Reset the safety thermal switch boiler. Check the
correct operation and cable of the thermal probe
or the resistance in the boiler and replace them if
necessary
One general fuse (230V) is
burnt out
Replace it
The machine does not switch on
and all leds are switched off.
The fuse on the CPU board
(5 V) is burnt out
Replace it
