SERVICE MANUAL
THE UNIT DOES NOT WORK
Check the voltage. Are
NO
Check the unit
YES
Check the electrical
there 198 ÷ 264 volts ?
electrical cable
supply line
YES
(IF INSTALLED)
If it is impossible to
Check if programmer
NO
close the contact,
contact is closed (black -
replace the
brown cables).
programmer.
YES
Check if the supplied
NO
Check if tank micro -
voltage on
switch contacts are
the electric control (CE)
closed.
(1 - 2 MS contacts)
YES
NO
Replace the electronic
Check if the pilot
NO
Is the flickering alarm
control (CE)
lamp is burnt.
lamp on the control
Eventually replace
panel not visible ?
it.
ELECTRIC CIRCUIT INTERRUPTED WHEN "ON" BUTTON IS PRESSED
Check the unit hardness
NO
Insulate the short
Is it insulated ?
circuit cable
YES
Check if the fan motor is
NO
Replace the fan motor
working (FMI)
(FMI)
YES
Check if the fan motor is
NO
Replace the fan motor
working (FMO)
(FMO)
YES
Check the electronic
NO
Replace the electronic
control (CE)
control (CE)
YES
Check the leds printed
NO
Replace the leds
circuit.
printed circuit.
NO
(IF INSTALLED)
Replace the
Check the motor
YES
programmer (P). Is it
programmer (P)
short circuited?
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