Rheavendors Group Horeca Large 380, Installation And Maintenance Manual

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17 Troubleshooting
17.1 Problems visualised by the machine
The problems described in this section are shown by an error message on the display of the machine.
SYMPTOM PROBABLE CAUSE REMEDY
The display shows
"OFF5": the
machine is out of
order
One or both EAROM
memories are faulty Replace them
The display shows
"NO WATER"
No water Wait until the mains water pressure is reset
Open the water supply.
The safety on the water inlet
solenoid valve is activated Reset the safety on the solenoid valve.
The display shows
"OFF6B": the
machine is out of
order
Pump motor defective. Check it and eventually replace it.
The display shows
"OFF10": the
machine is out of
order
Loss of programming
standard data Enter into the programming mode, reset the
pre-settings of all functions until they show
plausible values (the standard data can be
typed in) and then exit from the
programming mode. Eventually replace the
EAROMs
The display shows
"OFF14": the
machine is out of
order
Too many drinks have been
supplied without resetting the
level of the refilling pump of
the boiler Check and replace if it is necessary the
water level probe.
The display shows
"OFF16": the
machine is out of
order
The key on the display board
inside the machine could be
trapped. Check and eventually replace the key.
The display shows
"OFF17": the
machine is out of
order
The selection keypad has at
least one trapped button. Check and eventually replace the keypad
and or the relative cable, if necessary.
The display shows
"OFF 24VB": the
machine is out of
order
5 A fuse on the electronic
board burnt Change the fuse
Problem at the transformer Replace the transformer
The display shows
"OFF 24A” the
machine is out of
order
The power supply of the 24 V
elements is excessive Check the Zener diode TL 431 on the
CPU/POWER board and eventually replace
it.
The display shows
"OFF 31A” the
machine is out of
order
An error occurred in the
temperature control of the
boiler (high temperature) Check and replace, if necessary, the
thermal switch of temperature control in the
boiler and the resistance
The display shows
"OFF 31B” the
machine is out of
order
An error occurred in the
temperature control of the
boiler (low temperature) Check and replace, if necessary, the
thermal switch of temperature control in the
boiler and the resistance
MAN1260007 V.1 – 18/12/2014 31